G2_Main_T1_CMS by Uolo

Computer Science

About the Book This book embodies the principles outlined in the National Education Policy (NEP) 2020. It unveils the world of computer science through a unique and captivating pedagogical approach—seamlessly integrating curriculum content into the mesmerizing adventures of Mel and Conji, fictional figures hailing from the enchanting world of Avora. Our aim is to prepare learners for the dynamic and technology-driven landscape of the 21st century, equipping them with the essential skills they need to thrive in an ever-evolving world.

(TERM I)

Special Features • Explore More: QR codes to explore an exciting application of the concept. This element builds curiosity in children and helps them grasp concepts through digital visual aids. 2

• Discuss: Questions to trigger engaging group discussions in the classroom. • Think and Tell: Probing questions to stimulate thinking at an individual level. • Did You Know? Interesting facts related to the application of a concept. • Points to Remember: Chapter end summary. • Do It Yourself: Milestone exercises to practice specific concepts. • Chapter Checkup: A pool of questions catering to all topics and skills covered in the chapter.

About Uolo Uolo partners with K-12 schools to bring technology-based learning programs. We believe pedagogy and technology must come together to deliver scalable learning experiences that generate measurable outcomes. Uolo is trusted by over 10,000 schools across India, South East Asia, and the Middle East.

Singapore

Gurugram

CS_CB_Grade2_ICSE_Cover_CMT1.indd All Pages

Bengaluru

hello@uolo.com �205

NEP 2020 based

ICSE compliant | Technology powered

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ICSE

COMPUTER SCIENCE Grade 2 Term I

Lost and Found

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Foreword

Standing at the forefront of the digital and AI revolution, the importance of coding and computational skills has reached unprecedented heights. In today’s professional landscape, whether it’s in the fields of medicine, space exploration, education, science, or business, no sector remains untouched by this transformative wave. To not just survive but thrive in the 21st century, basic computer literacy is no longer sufficient. Learners must evolve into “digital natives” who can fluently read, write, and communicate in the languages that machines and AI comprehend. Recognizing this imperative, the National Education Policy of 2020 (NEP 2020) has strongly recommended the integration of coding skills, computational thinking, critical analysis, and problem-solving abilities into the curriculum. Moreover, forward-looking subjects like AI, Data Sciences, Computer Applications, and IT have been introduced as elective subjects from grade 9 onwards. It wouldn’t be surprising if further transformative measures are taken even at the elementary education level. Uolo has introduced an innovative 360-degree program for a coding-focused computer science curriculum, known as Tekie, spanning grades 1 to 8. Tekie is a significant stride towards STEM education that aims at making learners future ready—enabling them with skills needed in the ever-changing, technology-driven, and dynamic 21st-century world. Tekie adopts a captivating and engaging approach to learning, in line with the recommendations of the NEP 2020. The curriculum is ingeniously woven into the thrilling adventures of Mel and Conji, fictional characters from the enchanting land of Avora. The Mel and Conji series epitomizes a modern method of acquiring Computer Science knowledge and honing coding skills and computational thinking. Tekie is a technology-empowered curriculum that encompasses a few key components: • • • •

Main Content Books: These introduce learners to the theory of computer science and the tools used in the field. Topics in AI are also covered, along with experiential and curiosity-based learning resources. Coding Book: Specifically designed to nurture coding skills, this booklet aligns with the experiential and contextual learning approach of the curriculum, fostering critical thinking and problem-solving abilities.

Animated Learning Videos: The program is powered by high-quality animation-based learning videos that deliver learning in an engaging manner. Teacher Manual: This valuable resource supports classroom instruction, ensuring that educators can effectively deliver the curriculum.

Welcome to the captivating realm of Tekie! We hope you relish this educational journey as it equips you with the tools you need to thrive in the exciting and ever-changing world of the 21st century.

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Key Chapter Elements Each chapter has been divided into two key sections. Section A: Story-based Comic In every grade, students embark on an immersive experience in the “Adventures of Mel and Conji”. Within each chapter, in the initial section (Section A), the story unfolds, enveloping learners in an exciting journey. Through the story, students actively connect with fundamental concepts in the realm of Computer Science. Section B: Computer Science Concepts This section of the chapter focuses on the essential academic content. It provides the learning goals and assists teachers in their classroom instruction. This section also includes the following academic assets: QR codes to explore an exciting application of the concept.

HOTS questions to trigger engaging group discussions in the classroom.

Discuss!

This element builds curiosity in children and helps them grasp concepts through digital visual aids.

Is a smartphone like a computer?

Explore More! Interesting facts related to the application of a concept.

Scan this QR code to learn other quick ways to turn off a computer.

Did You Know?

Charles Babbage is known as “the Father of Computers.” This is the chapter summary. It enables learners to glance through all key concepts covered in the chapter.

Probing questions to stimulate HOTS at individual level.

Think and Tell

What are some things you like to do on a computer?

Milestone exercises to practice specific concepts.

A pool of questions catering to all topics and skills covered in the chapter.

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Introduction to Avora

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Places in Avora

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Meet the Characters

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Contents

Main Book

2 3

Computer—An Electronic Device �� 1 

Understanding Computers



Where We See Computers



Starting a Computer



Shutting Down a Computer

Parts of a Computer �� 17 

Exploring Parts of a Computer



Input, Process, and Output Cycle

Using the Keyboard �� 33 

Computer Keyboard



Alphabet and Number Keys



Special Keys



Combination Keys

Computer Mouse �� 48 

Understanding the Mouse



Mouse Pointers



Using the Mouse

Understanding Files �� 61 

Introduction to File



Opening a File



Typing in a File



Saving a File

Drawing with MS Paint �� 76 

Introduction to MS Paint



Using Shapes Tool



Saving a Drawing



Opening a Drawing

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Chapter 1 • Computer—An Electronic Device

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Understanding Computers Just like Mel and Conji, we too have friends with whom we play, learn, and share our things. Devices are things that help us to do specific tasks. For example, a phone is a device to talk to others. An electronic device is a device that works on electricity. A computer is an electronic device that helps us do many things. The computer, then, becomes our electronic friend.

Did You Know?

Charles Babbage is known as “the Father of Computers.”

Uses of Computers A computer is used for: 1 Playing Games

2 Watching Videos

4 Listening to Music

Discuss!

Is a smartphone like a computer?

3 Drawing Pictures

5 Finding Information

Think and Tell

What are some things you like to do on a computer?

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Advantages of a Computer

A computer can do many things for us. Some advantages of computers are:

1 Storage

It can store a large amount of data like pictures, music, videos, and games.

2 Connectivity

3 Information

We can share information and talk to each other using a computer.

Computers can help us to know about new things and subjects.

4 Calculation

Computers have calculators in them that can help us do additions and subtractions.

5 Entertainment

We can watch cartoons and films on a computer. We can also play games on it.

Disadvantages of a Computer Computers are very useful but they also have some disadvantages. Some of them are:

Chapter 1 • Computer—An Electronic Device

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Think and Tell Is doing many things on a computer at the same time an advantage?

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1 Health Problems

Using a computer for a long time can make your eyes and head hurt.

2 Security Problems

Criminals can use the internet to steal our private information stored on our computer.

3 Environmental Harm

Computer parts like batteries are harmful for nature. Not recycling them, and throwing them in the garbage harms the soil. This pollutes the environment.

Do It Yourself 1A 1

Match the following.

Security Problems

Health Problems

Entertainment

Connectivity

Information

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Write A for Advantages and D for Disadvantages.

Where We See Computers In today’s world, computers are used everywhere. They are used in: 1

Banks

Schools

Hospitals

HOSPITAL

• To let us take money out from our account. • To tell us how much money we have left in our account. • To help us send money to other accounts. 4

• To help us learn new things. • To help teachers to make time tables and report cards. • Help in collecting schools fees.

Airports and stations

• To keep records of all the patients in a hospital. • To help run big machines like X-ray machine. • To prepare and print medical reports.

5 Stores and offices OFFICE

STORE

• To tell us about the timings of the flight, train or bus. • To help us in booking tickets. • To keep a record of all the passengers. Chapter 1 • Computer—An Electronic Device

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• To keep a record of the number of items in shops. • To create and print orders and bills. • To keep a record of people who work in the shops and offices. 7

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Discuss!

How can computers help us in doing homework and creating projects?

Explore More! Which other places use a computer?

Do It Yourself 1B 1

Name any two places where computers are used. Write one use of computers in those places.

Tick () the odd one out. OFFICE

STORE

Starting a Computer To start a computer, we need to follow these steps: 1

Switch on the main power button.

Press the ON button on the UPS.

Press the ON button on the CPU.

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Press the ON button on the monitor.

Wait for the computer to start. Once your computer is ‘awake’, you can use it.

Shutting Down a Computer To shut down a computer, we need to follow these steps:

Start

1. Go to the Start button and click on it.

2. It will open a menu. Look for the power button on the bottom-left of the menu.

3. Click on the power button. It will open a menu.

4. Click on the Shut down option. The computer will start shutting down and after a couple of minutes, it will turn off.

Explore More!

Scan this QR code to learn other quick ways to turn off a computer.

Chapter 1 • Computer—An Electronic Device

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Do It Yourself 1C 1

You need to start your computer. Number the images in the correct order.

Number the steps to ‘Shut down’ a computer. Go to Start Button. A menu will appear on screen. Wait for the window to turn off. You will see a menu. Click on the power button. Click on the ‘Shut down’ option.

Points to Remember 1

Computer is an electronic device that helps us do many things.

Some uses of a computer are: a. Playing Games

b. Watching Videos

d. Listening to Music

e. Finding Information

c. Drawing Pictures

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Some advantages and disadvantages of computers are:

a. Advantages: Storage, Connectivity, Information, Calculation, Entertainment b. Disadvantages: Health Problems, Security Problems, Environmental Harm Computers are used in:

a. Banks

b. School

c. Hospital

d. Airports and stations

e. Shops and offices

The steps to start and shut down a computer are:

a. To start it:  Switch on the main power button.  Press the ON button on the UPS.  Press the ON button on the CPU.  Press the ON button on the monitor.  Wait for the computer to start. b. To shut it down:  Click on the Start button.  Look for the Power button in the menu. Then, click on it.  Select the Shut down option in the menu.  Wait for the computer to shut down.

Chapter Checkup A. Fill in the Blanks. Hints:

main power

schools

security problems

Health and

Computers are used in

To start a computer, first switch on the

The window will close when you click on the

We can use computers for careful to not overuse it.

entertainment

are disadvantages of computers.

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shutdown

to manage fees. button. button.

and having fun! But, we should be

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B. Tick () the Correct Option. 1

Which button is used to start the computer?

Computers are used to keep records of all passengers at

OFFICE

STORE

At which of these places are computers used to withdraw money?

OFFICE

STORE

Where are computers used to make medical reports? HOSPITAL

OFFICE

STORE

C. Who Am I? 1

I am an electronic device that helps you do many things.

I can help you play games, draw pictures, and find information on the internet.

I am the place where computers are used to keep records of all the patients.

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I am a place where computers are used to withdraw money.

I am the button that helps you shut your computer down.

D. Write T for True and F for False. 1

A computer is an electronic device.

Hospitals use computers to keep records of patients.

Computers are only used for cooking food.

Computers help us to play music, videos, and games.

To start a computer, you need to press the button on the monitor first.

E. Answer the Following. 1

What is a computer?

Where do we use computers?

What are the advantages of computers?

What are the disadvantages of computers?

5 3

Why can using computers sometimes be not good?

Chapter 1 • Computer—An Electronic Device

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F. Apply Your Learning. 1

Sree wants to learn what computers can do. Can you help him?

Raj wants to switch the computer on. What does he need to do?

Archi is wondering about the disadvantages of using computers. Can you tell her?

Pranav wants to book a train ticket. Can you suggest what he should do?

Tanya wants to know where computers are used. She also wants to know how they are used there. Can you help her?

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Chapter 1 • Computer—An Electronic Device

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Chapter 2 • Parts of a Computer

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Exploring Parts of a Computer In chapter 1, we learnt about the computer. Now, let us learn about the different parts of a computer. A computer has three types of parts. These are input devices, output devices, and storage devices. We already know that a device is a tool that helps us to do a specific task. Now, let us learn about the different devices in a computer.

Think and Tell

Can you name a few devices in the classroom?

Input Devices Computers can only help us if we tell them what we need. Input devices help us to tell a computer what to do. Input devices provide ways to ‘talk’ to the computer. There are different input devices. Let us learn more about them. Keyboard A computer keyboard is a board with buttons on it. These buttons are called keys. Each key on the keyboard does one type of thing only. Using the keyboard, we can type on the computer.

Did You Know?

A standard keyboard has 104 keys. You can find more keys on a multimedia keyboard, which is used for playing audios and videos.

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Mouse A computer mouse is a small input device. The mouse is used to move the pointer around the computer screen and click on files or icons to use them. It has two buttons and a wheel between them. Uses of a Mouse • Pointing at things on the computer screen. • Moving pages on the computer screen up and down. • Selecting items.

• Clicking on items to open them.

Did You Know?

The first mouse was made of wood and had two wheels underneath it. It was invented by Douglas Engelbart.

Microphone A microphone is an input device that lets us use our voice to tell the computer what to do. Microphones these days are fitted into the computer itself. We can also buy microphones that can be plugged into the computer. Uses of a Microphone • Recording our voice.

• Talking to other people while online.

• Giving voice commands to the computer to play music, search for a film, or open a file.

Do It Yourself 2A Write T for True and F for False. 1

A device helps us to do specific tasks.

You can select items on the computer with a mouse.

The microphone helps us listen to the sounds made in the computer.

The keyboard helps us to type on the computer.

The mouse has only one button.

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Output Devices We learnt that input devices help us tell the computer what we need. But how does the computer show us the results of our commands? It does so by using output devices. Output devices show the results of what we want from the computer. Let us see some output devices. Monitor A monitor is the screen of your computer. It shows you the result of your input. Uses of a Monitor • Helps us to see what we are doing on the computer, like typing or moving the mouse. • Lets us watch videos or films.

Explore More!

Do you want to know what is inside a monitor? See here!

Printer A printer is used to print text or pictures on paper. Uses of a Printer • Lets us get a printout of text or pictures.

• Lets us get a black-and-white or colour printout of the text or the picture that we are printing. Speakers and Headphones Speakers and headphones help us to hear sounds that a computer creates as outputs. This includes listening to music on the computer. It also includes listening to the voice of a person we have called using the internet.

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Speakers are different from headphones. Speakers are used when more than one person wants to hear the sounds and music. So, they are usually bigger. Headphones are worn over the ears. They are meant for only one person to listen to sounds and music, without disturbing others. Uses of Speakers and Headphones • Helps in listening to music or sounds in a computer.

• Helps in listening to the voice of the person who we have called using the internet.

Did You Know?

Speakers use magnets to create sounds.

Storage Devices We can do many things on a computer. We can listen to music, watch a video, and even get printouts. We can also store information in the computer, like our favourite songs, our school projects, films, and games. This is called data. In the computer, data is stored in storage devices. Let us learn about them. Hard Disk A hard disk is like a box that stores all the data in the computer. Every computer needs a hard disk to remember things. Uses of a Hard Disk • Keeps important things on the computer safe.

• Stores all that we have on the computer—including our favourite games, music, films, and projects.

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CD/DVD CDs and DVDs are both storage devices. They are used by putting them in the CD/DVD Drive. Both the CD and the DVD are round in shape and look similar, but they are different in functioning. Let us see how! CD

DVD

CD stands for Compact Disc.

DVD stands for Digital Versatile Disc.

A CD holds less amount of data.

A DVD holds a large amount of data.

Uses of CDs and DVDs • These can be carried around easily.

• These help us in storing things like music, films, and homework. Pen Drives A pen drive is a small stick-like device in which you can store files. You can also transfer these files to another computer easily. It is also called a flash drive. It is smaller than CDs and DVDs. Uses of Pen Drives • They can be used to easily transfer files from one computer to another. • These are used to store a greater amount of data than CDs or DVDs. • These, like CDs and DVDs, can be carried around easily.

Chapter 2 • Parts of a Computer

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Do It Yourself 2B 1

Label the parts of the computer in the given image.

Input, Process, and Output Cycle Have you ever seen a plant grow? You give that plant water. The plant also breathes air. It also takes in sunlight. It takes in all these things and uses them to give us flowers and fruits!

Computers work in a similar way. Let us see how. Input: What we give to the computer. Process: What the computer does with the input. Output: What the computer gives us back. 26

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This is called the Input, Process, and Output cycle or simply the IPO cycle. The IPO cycle tells us how a device works. Let us see another example. This time, of a washing machine.

Input

We put dirty clothes in the washing machine.

Process

The washing machine washes the clothes.

Output

We get clean clothes.

Discuss!

Can you think of another example for the IPO cycle?

Do It Yourself 2C Write I for Input, P for Process and O for Output. 1

Alarm Clock a

You set the alarm on the clock.

The clock keeps a track of the time and compares it with the time of the clock.

When the time matches, the alarm rings.

Refrigerator a

The food is cold.

The food is hot.

The refrigerator absorbs heat from the food.

Chapter 2 • Parts of a Computer

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Points to Remember 1

Input means giving instructions to the computer.

Input devices help us to instruct a computer.

A keyboard lets us type letters, numbers, and symbols on the computer.

A mouse points, clicks, and moves things on the screen, like picking up and placing objects.

A microphone is an input device that helps the computer hear us.

An output is the result of our instructions to the computer.

A printer is used to print text or pictures on paper.

A monitor is a screen that shows you the response of your input that the computer creates.

We can listen to sounds that the computer generates through speakers.

Headphones are worn over the ears so that only one person can listen to music and sounds.

Storage devices store files, projects, and other data.

A hard disk is like a box inside the computer that stores data.

The IPO cycle for a device tells us how it works. IPO stands for Input, Process, and Output.

Process is what the device does with the input.

Chapter Checkup A. Fill in the Blanks. Hints:

input

monitor

keyboard

speakers

pen drive

help you listen to music.

1 2

A mouse is an

device.

is a screen that looks like a TV.

can be carried around easily.

We type on a computer using a

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B. Tick () the Correct Option. 1

Which device allows you to type letters, numbers, and special signs on a computer? a

Keyboard

Hard Disk

Microphone

Hard Disk

Headphone

Printer

Keyboard

Headphone

Monitor

Headphone

Keyboard

Headphone

Which storage device is like a small stick? a

Mouse

Which device do we use to get a printed copy of a picture from the computer? a

Which of the following is a storage device? a

Monitor

Pen Drive

Printer

Which device helps you move items on the computer screen? a

Pen Drive

Printer

Mouse

C. Who Am I? 1

I let you listen to music without disturbing others.

I am round in shape and shiny. You can store things in me. I cost more than a CD.

If you use me, everyone can hear the sound given by me.

I keep all your favourite games and pictures safe in the computer.

When you type something on the keyboard, the numbers and the alphabets are seen on me.

D. Write T for True and F for False. 1

We give instructions to the computer using input devices.

A computer mouse helps you click on the computer.

A keyboard is small and round like a shiny plate.

A microphone records sounds.

A mouse is a box that stores photos in the computer.

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E. Answer the Following. 1

What is an input device?

What is an output device?

Why do we need storage devices?

How are headphones different from speakers?

What is the IPO Cycle? Give two examples.

F. Apply Your Learning. 1

On a family vacation, dad took many photos. Now, he wants to save them on a storage device that he can carry around with him. It would be great if the device can be carried safely in his wallet. Which device should he choose and why?

Riya wants to type a letter on the computer. Which devices will she use?

Aarav is watching a film on his computer. Which devices is he using? Also, write which device he will be using.

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Tina was hungry. Her mother made her a sandwich using a toaster, bread, and cheese. Is this an IPO cycle? If so, correctly identify the input, process, and output.

Sagar loves drinking cold water. He keeps a glass of water in the refrigerator to make it cold. Explain the input, process, and output for this.

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Chapter 3 • Using the Keyboard

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Computer Keyboard We use a pencil to write on paper. But how do we write on a computer? We use the keyboard. The keyboard is an input device. It has lots of buttons, called keys, on it. It helps us type letters, numbers, and symbols on the computer. Let us learn about these keys.

Alphabet and Number Keys Alphabet Keys The alphabet keys are the keys with letters on them. Did You Know?

The computer keyboard is also called the QWERTY keyboard. It is based on the first six letters on the keyboard.

There are 26 alphabet keys, one for each letter in the English language. We use the alphabet keys to type words and sentences on a computer. The keys are arranged in such a way that they make typing letters easier.

Number Keys The number keys are the keys with numbers on them. There are 10 number keys, from 0 to 9. These keys help us to type numbers on a computer. Some Chapter 3 • Using the Keyboard

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Explore More!

Can you use the computer keyboard to write in another language? Find out! 37

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keyboards have number keys on the right-hand side also. This is known as the numeric keypad.

Do It Yourself 3A 1

Colour the vowels.

Tick () the correct type for the given keys. Key

Number Key

Alphabet Key

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Special Keys There are many special keys on a keyboard. These keys are used to do particular tasks. Let us learn about them.

Backspace Key Sometimes, while typing, we make mistakes. We can correct them by erasing them. The backspace key helps us remove the text or objects before the cursor (the blinking line). Imagine we have typed ‘computerr’ by mistake instead of ‘computer’. To fix this: 1. F irst, check if the cursor is at the right place. It should be after the letter to be erased, as shown.

2. Then, press the Backspace key.

Delete Key

computerr

computer

Think and Tell

Which item in your pencil box works like the backspace key?

The Delete key also helps us remove text or objects but when they are after the cursor. Imagine we have typed ‘machinee’. We can correct this mistake by clicking before the extra ‘e’ and pressing the Delete key. To fix this: 1. C heck if the cursor is before the extra ‘e’.

machine e

machine

2. Press the Delete key.

Chapter 3 • Using the Keyboard

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Punctuation Keys Punctuation keys are used to add punctuation symbols. These symbols are the question mark (?), exclamation mark (!), full stop (.), comma (,), semi-colon (;), and colon (:).

Spacebar The Spacebar is also called the Space key. The spacebar is the largest key on the keyboard. It adds a space between two words. Imagine we have typed ‘Ahorse’. To fix this: 1. C heck if the cursor is where we want to add space.

A horse

2. Press the Space key.

Caps Lock Caps Lock key is used to type letters in capital. If you press this key once, your letters will be in capital when you type. To write in small letter again, press the Caps Lock key again. Caps Lock: ON

I PLAY FOOTBALL

Caps Lock: OFF

i play football

Think and Tell

Just like Caps Lock, is there a key on the keyboard that helps us to type capital letters?

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Enter Key The Enter key is used to move the cursor to a new line while typing. For example, imagine we have typed ‘I am a student. I study in grade 2’. To move the second sentence to the next line: 1. F irst, check if the cursor is before the sentence. 2. Then, press the Enter key.

Arrow Keys

I am a student. I study in grade 2. I am a student. I study in grade 2.

The arrow keys are four keys with arrows pointing in different directions. They are used to move the cursor in the direction of the arrow.

Combination Keys A combination is when two or more things are done together. So, a combination on a keyboard happens when we push two or more keys together. Let us learn these keyboard combinations.

Symbol Keys Some keys have two things printed on them. They can help us type both the things, if we know how to use them. For example, look at the number keys. They have symbols written above the numbers.

We can type these symbols by pressing and holding the Shift key and then that number key. For example, we want to type ‘Hello!’. Let us first type the word ‘Hello’. Chapter 3 • Using the Keyboard

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Then, to add the exclamation mark (!), we will press together.

and

Do It Yourself 3B 1

Colour the key that: a

Turns the small letters to capital letters.

Adds space between two words.

Which key helps us type the symbol on the top of a key? a

Caps Lock

Shift

Backspace

Delete

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Tick () Yes if the symbol can be used as combination key only. Tick () No if the symbol can be used without combination. Key

Yes

! ? & ; ,

Points to Remember 1

The keyboard is an input device. It has lots of buttons called keys on it. It helps us type letters, numbers, and symbols on the computer.

The alphabet keys are the keys with letters on them.

The keys are arranged in such a way that they make typing letters easier.

The Backspace key helps us remove the text before the cursor.

The Delete key is used to delete text after the cursor.

The Spacebar adds a space between two words.

Caps Lock key is used to type letters in capital.

The Enter key is used to move the cursor to a new line while typing.

Arrow keys are used to move the cursor in the direction of the arrow on the screen.

Keys that work in a combination have two symbols written on them.

We press and hold the Shift key and then press any such key with two symbols to type the other symbol.

Chapter 3 • Using the Keyboard

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Chapter Checkup A. Fill in the Blanks. Hints:

capital

numbers

The

The number keys are used to type

The

Caps Lock key is used to write in

The Enter key is used to move to a new

line

backspace

alphabet

keys are used to type letters, words, and sentences. .

key on the keyboard is like an eraser for your words. letters. when typing.

B. Tick () the Correct Option. 1

What is the use of alphabet keys? a

Typing numbers

Typing special or punctuation symbols

Typing words

Adding spaces between words

Which is the largest key on the keyboard? It also adds a space between two words. a

Backspace key

Caps Lock key

Enter key

Spacebar

What are the arrow keys used for on the keyboard? a

Typing letters, words, and sentences

Moving the cursor in different directions

Entering symbols and punctuation

Adding spaces between words

Which key is used along with other keys? a

Enter key

Backspace key

Arrow keys

Shift key

How can you type the symbol above a number key? a

Press the Shift key and that number key together.

Press the Caps Lock key and that number key together.

Press the Enter key and that number key together.

Press the Spacebar key and that number key together.

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C. Who Am I? 1

I help to move the cursor to the next line.

If you have typed something wrong, I help you go back and remove it.

I make the letters capital when you type.

I add a space between two words.

D. Write T for True and F for False. 1

A keyboard is used to type letters, numbers, and symbols.

The alphabet keys on the keyboard are arranged as A, B, C, and so on.

The number keys are used to type letters, words, and symbols.

Some keyboards have number keys on the right-hand side also.

The spacebar adds a space between two words.

E. Answer the Following. 1

What is a Spacebar used for?

What does the Caps Lock key do?

Why do we use the Delete key?

Give examples of special keys.

What is a combination key?

Chapter 3 • Using the Keyboard

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F. Apply Your Learning. 1

Riya wants to type her name in capital letters. Which key should she use?

Raj wants to type an exclamation mark at the end of a sentence. Which keys should he use?

3 2

Alex wants to add a question mark to the end of a sentence. Which keys should he use?

4 2

Maya is wondering why the letters on the keyboard are in a different order than the book. What do you think is the reason?

5 2

Emma is playing a game on the computer. She needs to move the character on the screen. Which keys could help her?

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Chapter 3 • Using the Keyboard

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Chapter 4 • Computer Mouse

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Chapter 4 • Computer Mouse

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Understanding the Mouse We learnt that we could do so many things on a computer like listen to music, play games, and even study. Look at the part of the computer that is labelled here. 1. Do you know what it is called? It is called the mouse!

2. When you move the mouse, an arrow also moves on the computer screen. This arrow is called the pointer. Mouse

Think and Tell

Is mouse an input device?

A mouse has three parts—a left button, a right button, and a scroll wheel.

Left Button

Right Button Scroll Wheel

Did You Know?

The mouse was invented by Douglas Engelbart in the 1960s.

But how do these parts help us? • Left Button: helps you click on things you want to open or use on the computer. • Right Button: opens up additional options.

• Scroll Wheel: helps you move a page that is open on the computer screen up and down. 52

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Holding a Mouse Now, let us learn how to hold the mouse properly. To hold a mouse properly, put your hand on top of it in such a way that: 1. Your index finger should be on the left button.

2. Your middle finger should be on the right button.

3. Your thumb and the other two fingers should be on the sides of the mouse. Index Finger

Left Button Thumb

Right Button

Middle Finger

Other Two Fingers

Discuss!

Does the mouse work when it is in the air? Why or why not?

Now, move the mouse on the table. See how the pointer on the monitor also moves.

Do It Yourself 4A 1

Colour the parts of the mouse with these colours: left mouse button in orange, right mouse button in blue, the scroll wheel in red and the body of the mouse in green.

Chapter 4 • Computer Mouse

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Mouse Pointers The mouse pointer is the little arrow on the monitor that moves when we move the mouse. It helps you to point at, select, and click on many things that you see on the monitor. At first, the mouse pointer is simply a white arrow with a black border. What if we don’t like this arrow? Can we change it? Yes, we can!

Explore More!

There are many other types of mouse pointers. Let us look at some of them.

Find out how your mouse pointer can be changed.

Using the Mouse We have learnt what a mouse is and how to hold it. Now, let us learn how to use it.

Clicking Pressing a mouse button is called clicking. We hear a soft clicking sound when we press the mouse buttons. Clicking with the left button is called a left-click. With one left-click, we can select an item.

click

This PC

click click

This PC

Clicking the left button two times, very quickly, is called a double-click. When we double-click the left mouse button, it will open the selected item.

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This PC

click

Clicking with the right mouse button is called a right-click. When we right-click, we get a list of choices that we can select.

Scrolling Scroll up

Rolling the scroll wheel up and down using your index finger is called scrolling. Scrolling moves the page that is opened on the monitor up and down.

Scroll down

Drag and Drop 1. Select a file by left-clicking on it.

2. Then hold the left mouse button and move the mouse without leaving it. Moving the mouse without leaving the left mouse button is called dragging.

Hold

3. When you release the left button, you will see the file is placed where the pointer is.

Drop Drag

4. This way of moving the file is called drag and drop.

Do It Yourself 4B 1

Match the following. Left-click

Keep holding the left button to do this.

Right-click Place an object at a new place on the monitor. Drag

Open a list of options.

Drop

Select an item.

Chapter 4 • Computer Mouse

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Write T for True and F for False. a

Right-click is used to select an item.

Drag is used to move an object.

The default mouse pointer is a white arrow with a black border.

Points to Remember 1

The mouse is an input device that helps control the pointer on the monitor.

The mouse consists of three main parts: left button, right button, and a scroll wheel.

Mouse pointers look like arrows on the monitor. They move in the same direction a mouse is moved.

To hold a mouse correctly, position your index finger on the left button, middle finger on the right button, and thumb and other fingers on the sides.

The left mouse button is used to click on, select, and open items on the monitor.

The right mouse button provides additional options for the selected item.

The scroll wheel helps in scrolling up and down on the monitor.

Left-clicking on an item selects it, while double-clicking opens the selected item.

Right-clicking on an item brings up a menu with a list of options for a selected item.

Chapter Checkup A. Fill in the Blanks. Hints:

scroll wheel

right button

left button

mouse

pointer

is an important input device of a computer.

The move the mouse.

is the little arrow that appears on the monitor when you

The

is used to select an item on the computer monitor.

The

is used to see more options for a selected item.

The

is used to scroll up and down on a page or a document.

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B. Tick () the Correct Option. 1

Which part of the mouse is used to select an object on the computer monitor?

Left button 2

Scroll wheel

Right button

To open an item on the computer, we should

the item. click click

Left click 3

Scroll

Double click

When we want to move up and down on the page opened on the monitor, we should on the page.

Left click

Scroll

Right click

Which mouse pointer is shown on the computer screen, when you first use it?

Which finger is used to click the left button? Index Finger

Chapter 4 • Computer Mouse

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Middle Finger

Thumb

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C. Who Am I? 1

I am a computer device. I have the name of a small animal.

I move on your monitor when you move your mouse.

You roll me up and down on the mouse. I help you go up and down on a page.

I am the button on the mouse that you use to open a list of choices.

I am the button on the mouse that you use to select an item.

D. Write T for True and F for False. 1

We cannot move the pointer on a computer monitor.

The mouse is an input device.

The computer mouse is an animal.

We can move an object from one place to another on a computer monitor using a mouse.

You can select a particular item by left-clicking on it.

E. Answer the Following. 1

What are any two uses of the mouse?

What is single-click and double-click?

What is left-click and right-click?

Explain the drag and drop use of a mouse.

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F. Apply Your Learning. 1

Aarna wants to move an item on the desktop from one place to another. What should she use?

Tiya sees an arrow on the monitor that moves when she moves the mouse, but she doesn’t know what it is. Can you tell her what it is?

Ravi is reading a story on the computer. He wants to move to the lower part. Which part of the mouse can help him?

Eva is new to computers. She doesn’t know how to open an item. Which button on the mouse can help her?

Chapter 4 • Computer Mouse

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Chapter 5 • Understanding Files

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Introduction to File Look at this box. It has so many toys in it. There is a teddy bear, a toy guitar, and a toy plane in it. Each toy has a name. So, if anyone asks you for the teddy bear, you can always easily find it in the box. In the same way, our computer has many files in it. A file is collection of data. It can be named. It has information stored in it. Files can be of various types. A file may be of text, image, video, audio, or even a game type.

Creating a File Let us learn how to create a Word file. You can type your best friend’s name and favourite colour in it. Steps to create a file: 1. Right-click on the empty space on the desktop. 2. A list will appear.

Discuss

How can we create a new Microsoft Excel Worksheet?

3. Go to the New option. A drop-down will appear. 2

click

3 4

4. Click on the Microsoft Word Document option. 5. The icon of the file appears on the desktop.

Chapter 5 • Understanding Files

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Do It Yourself 5A 1

Tick () all the things that you can store as a file in your computer. a

An image

Your pencil

Your favourite song

A story

Number the steps to create a Word file in the correct order. Click on the Microsoft Word Document option. Position the cursor over the New option. Right-click on the desktop.

Opening a File You learnt how to create a file. Let us now learn how to open the file you have created. Steps to open a file: 1. Take your pointer to the file you created.

2. Double-click the picture of the file to open it.

click click

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Another way to open a file: 1. Right-click the file. click

2. A list will appear. Select the Open option. click

There is yet another quick way to open a file. 1. Select the file using the left mouse button.

2. Now, press the Enter key on the keyboard. The file will open.

click

Discuss

Which way of opening a file do you find the quickest? Chapter 5 • Understanding Files

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Typing in a File Now that we have opened the Word file, let us try writing something in it. Let us try to type our best friend’s name and our favourite colour in it. Steps to type: 1. Click on the white area. A blinking black line will appear. It is called the cursor. This is where we can type.

2. U se the keyboard to type your best friend’s name and your favourite colour here.

My best friend: Sree My favourite colour: Red

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Saving a File We should always save our work. It helps us keep the text that we have written. It also saves our work from getting deleted by accident. Steps to save a file: 1. Click on the File option. Click on the File option.

2. Click on the Save As option.

Click on the Save As option.

Chapter 5 • Understanding Files

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3. Choose where to save it.

b Click on the Desktop option.

a Click on the This PC option.

4. Give a name to the file.

Add a file name.

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5. Click on the Save button.

Click on the Save button.

Explore More!

Can we rename a file or folder? Find out more in here!

Do It Yourself 5B Write T for True and F for False. 1

You can open a file by double-clicking the right mouse button.

You can open a file by clicking the right mouse button on the file and then clicking on Open.

Saving a file is important, so that the information on our file is stored safely.

You cannot type in a Word document.

Chapter 5 • Understanding Files

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Points to Remember 1

Just like a box stores our toys, a computer stores files.

Files can hold text, pictures, songs, videos, and even games.

We can create a Word file to write something in it.

Steps to create a file: Right-click on the desktop → select New → select Microsoft Word Document.

Opening a file: Go to the file → double-click on the file.

Saving a file: Click on the File option → then Save As option → choose where to save → give a file name → click Save.

Chapter Checkup A. Fill in the Blanks. Hints:

new

files

double-click

videos

are stored on a computer.

1 2

Files can hold text, pictures, songs, and even

To create a new file, we can right-click and click the

To open a file, we need to

option.

the file.

B. Tick () the Correct Option. 1

What is a file like on the computer? a

Power button

Keyboard

An item

A Word file helps us to: a

Mouse keep a song

type something in it

play a video

play music

How can you create a new file on the computer? a

Click Open

Click Save As

Right-click and choose New → File

Double-click the file

How do you open a file that you saved? a

Click Save

Right-click and choose Open

Double right-click on the file

Click New → File

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C. Who Am I? 1

I am an item on the computer that holds your drawings, stories, and music.

I show up when you right-click on a file, giving you options to choose from.

I am the blinking black line on the computer screen where you can type.

I keep the words you wrote in a file so that you can see it again.

D. Write T for True and F for False. 1

Saving a file makes sure that the words you wrote will be gone if you turn off the computer.

You can open a file by right-clicking on it and selecting the Open option.

Word files are used to type something in them.

After opening a file, you can type your name by clicking on the blinking black line.

A story on your computer is not a file.

E. Answer the Following. 1

What is a file?

What are the different things that we can store in a file?

Why is it important to save a file?

What is the blinking line in the Word file called?

Chapter 5 • Understanding Files

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F. Apply Your Learning. 1

Tim has written a story on his computer. What do we call the item on which he has written it?

Rina just finished writing a letter to her friend on the computer. What steps should she follow to save it?

Tara wrote a short story on her computer. The next day, she switched her computer on. But her Word file was blank. Why do you think this happened?

Tim wants to type her name in a file. How will she do it?

Amit has written his name in a file and saved it. How will he open it again?

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Chapter 5 • Understanding Files

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Chapter 6 • Drawing with MS Paint

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Chapter 6 • Drawing with MS Paint

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Introduction to MS Paint There are so many beautiful things around us, like flowers and butterflies. Have you ever tried drawing them? How do we make a drawing? We usually draw on a paper using pencils and colours. But do you know that we can also draw in the computer? Do you know how? You can use MS Paint. MS Paint lets us draw and colour on the computer. Let us learn more about it!

Did You Know?

MS Paint was created in 1985.

Starting MS Paint To open MS Paint, follow these steps:

Search Bar

1. Click on the Search bar. 2. Type “paint ”.

3. Click on the Paint app.

Type “paint”

Click here

4. MS Paint app opens.

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Parts of MS Paint 1. Title Bar: Shows the name of your MS Paint file.

Title Bar

2. Tabs: This is where you can use different types of tabs like File, Home, and View. Tabs

3. Ribbon: Group of tools to help you draw.

Ribbon

4. Drawing Area: Space to draw.

Drawing Area

5. Colors: Colour choices to choose colour from.

Chapter 6 • Drawing with MS Paint

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Do It Yourself 6A 1

Fill in the boxes.

Hints:

title bar

ribbon

tabs

colors

drawing area

Using Shapes Tool A shape is a figure that is made of lines or curves. There are many shapes like squares, circles, and triangles. In MS Paint, we have Shapes tools. They help us to draw shapes easily. Let us learn how to draw some shapes in MS Paint.

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Drawing a Line Steps to draw a line: 1. Choose the Line tool from Shapes.

Line tool

2. Press and hold the left mouse button where you want to start drawing the line. 3. Move the mouse to where you want to end drawing the line. End Point

4. Leave the left mouse button when you are done. Your line is drawn.

Chapter 6 • Drawing with MS Paint

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Drawing a Curve Steps to draw a curve: 1. Choose the Curve tool from Shapes.

Curve Tool

2. Press and hold the left mouse button.

3. Move the mouse to an end point and then leave it. End Point

4. P ress the left mouse button from where you want to make it curved and then move it.

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5. Leave the left mouse button when you are done. The curved line is drawn.

Drawing a Rectangle Steps to draw a rectangle: 1. Choose the Rectangle tool from Shapes.

Rectangle Tool

2. P ress and hold the left mouse button where you want to start drawing the rectangle. 3. Move the mouse to where you want to end drawing the rectangle.

End Point

Chapter 6 • Drawing with MS Paint

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4. Leave the left mouse button when you are done. The rectangle is drawn.

Drawing a Circle Steps to draw a circle: 1. Choose the Oval tool from Shapes.

Oval Tool

2. Press and hold the Shift key. Also press and hold the left mouse button where you want to start drawing the circle. 3. Move the mouse to where you want to end drawing the circle.

End Point

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4. Leave the left mouse button when you are done. The circle is drawn.

Drawing a Polygon A polygon is a shape with many sides. A triangle is a polygon with three sides. A square is a polygon with four sides. We can draw any shape with the Polygon tool in MS Paint. Steps to draw a polygon: 1. Choose the Polygon tool from Shapes.

Polygon Tool

2. Press and hold the left mouse button where you want to start drawing the polygon. 3. Move the mouse where you want the next point of polygon. 4. Continue moving and pressing the left mouse button to add points.

Chapter 6 • Drawing with MS Paint

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5. Connect the last point added to the start point to complete the polygon.

6. Leave the left mouse button when you are done. The polygon is drawn.

Discuss!

What things can you draw using the shapes we learnt?

Do It Yourself 6B 1

Match the following. Shapes

Tool names Line

Circle

Curve

Triangle 88

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Look at the pictures on the right corner. Draw them on the blank space.

Saving a Drawing When you have finished drawing on MS Paint, you need to save it so that you can always see it again later. Let us see how we can do that. Steps to save your MS Paint file: 1. Click on the File tab.

2. A menu will open up.

3. Click on the Save as option. Chapter 6 • Drawing with MS Paint

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4. Another window will open which will allow you to save your file. 5. Type a name for your drawing in the File name box.

house.png

Type here

6. Click on the Save button.

Click here

Explore More!

Would you like to know what else can be drawn on MS Paint? See this video!

Opening a Drawing Let us now learn how to open a previously saved file. Steps to open a drawing file: 1. Click on the File tab.

2. Click on the Open option.

3. Find the drawing file you want to open.

4. Select the file and click on the Open button.

house.png

Open

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5. Your MS Paint file opens. house.png

Do It Yourself 6C 1

Fill in the letters to complete the tool names.

O R

L CT

Points to Remember 1

MS Paint is a drawing app on the computer.

You can use MS Paint to draw lines, curves, rectangles, circles, and polygons.

To start MS Paint, click on the Search Bar and then type Paint in the Search Bar.

To draw a line, select on the Line tool from Shapes.

To draw a curve, select on the Curve tool from Shapes.

To draw a rectangle, select on the Rectangle tool from Shapes.

To draw a circle, select on the Oval tool from Shapes.

To save an MS Paint file, click on the File tab and then select the Save as option.

To open a saved file in MS Paint, click on the File tab and then select the file, and finally, select the Open option.

Chapter 6 • Drawing with MS Paint

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Chapter Checkup A. Fill in the Blanks. Hints: 1

start

polygon

file

save as

title bar

To start MS Paint, first click on the

button.

shows the name of your MS Paint file.

is the space where you draw.

tool is used to draw a polygon.

To save a drawing, click on the option.

drawing area

tab and then select the

B. Tick () the Correct Option. 1

Which tool do you use to draw a line?

Which tool do you use to draw a circle?

C. Who Am I? 1

I am the app that lets you draw on the computer.

I am the place in the drawing app that contains all the tools.

I am the tool that lets you draw squares and triangles.

I am the key you need to press to draw a circle from the Oval tool.

I am the option you choose to save your file.

D. Write T for True and F for False. 1

Triangles, squares, and rectangles are types of polygons.

If we want to see our work again after closing MS Paint, we should save our file before closing it.

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In MS Paint, we can only use one shape.

You can see your drawing only once after you save the file.

You can only use four colours to colour your drawings in MS Paint.

E. Answer the Following. 1

What is MS Paint?

How do you start MS Paint?

What are the parts of the MS Paint window?

How do you save your drawing in MS Paint?

How can you reopen an MS Paint file?

F. Apply Your Learning. 1

Sree wants to draw a house. Which app can he use?

Sara wants to make a beautiful flower in MS Paint. What tools can Sara use?

Tanya wants to keep her drawing so that she can work on it later. What should she do?

Chapter 6 • Drawing with MS Paint

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Computer Science

(TERM I)

Special Features • Explore More: QR codes to explore an exciting application of the concept. This element builds curiosity in children and helps them grasp concepts through digital visual aids. 2

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