SAMPLE #1247R
S4A PROGRAMMING BRICKS
Lesson 17－Propeller-driven Plane
Course Objectives
Keywords
Understand the application and principle of propellers. Students can explain the operation mode of propeller aircraft and its difference from ordinary aircraft.
50 mins
Develop the spirit of active participation in activities.
Propeller. Airflow. Engine. One-way selection (Selection structures). "Broadcast-receive" statement. Teaching Guide
1.
Total Time
Increase Students’ Motivation
(1) A teacher shares that almost all airplanes before World War II were propeller airplanes. Until now, it still occupies an important position, especially for the low flight altitude and the slower flight speed, Propeller airplanes are mostly used for short-range navigation.
Time (mins)
5
Teaching Resource
Assess ment
▪ Supplemen Self-awa tal slides
reness
(2) A teacher demonstrates the model of this lesson Propeller-driven Plane. Please ask students to think about how to write a program to make the model move. 2.
Course Activity Related to the Manual
(1) Students get the basic materials of this model. (2) A teacher can guide students to assemble the model with the building blocks according to the teaching slide and the student's book and explain the principle and the structure of the model. (3) Encourage students to write the program of the model first and observe how the model works.
30 ▪ Electronic Particip whiteboard ation ▪ Projector & Screen ▪ Tablet or computer ▪ Building blocks
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SAMPLE #1247R
A.
S4A PROGRAMMING BRICKS
Understand “One-way selection”
If the "condition" is met, the embedded block will be executed; if not, it will not be executed.
B.
Turn off motor's rotation and all programs.
In order to avoid accidentally touching the operating program during writing the program, the program is stopped as a precautionary measure.
Press the space key to turn off motor 4 and stop all programs.
C.
When the green flag is clicked, the loop is executed, and the broadcast is executed when the detected sound is greater than 450. When the green flag is clicked, the embedded loop is executed.
D.
Set the one-way selection. When the value detected by the microphone is greater than 450, start the broadcast function.
When the start signal is received, the motor is driven to move the wings of the propeller-driven plane. Set that when the start signal is received, motor 4 will rotate clockwise for 5 seconds, motor 4 will be turned off and this program stops. Copyright © 2021 Gigo Taiwan Co.,LTD. All rights reserved. 53
SAMPLE #1247R
E.
S4A PROGRAMMING BRICKS
Program Result
When the green flag is clicked and the detection sound is greater than 450, the start signal will be broadcast.
When receiving the start signal, the motor is driven to move the propeller-driven plane's wings, and then turn off the motor and stop this program.
When the space key is pressed, stop the motor's rotation and all programs.
(4) Ask the students to adjust the model or modify the code to see if there are different ways of operation.
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SAMPLE #1247R
3.
S4A PROGRAMMING BRICKS
15 ▪ Model
Integrated Learning
(1) Display all the models of each group. Give all students a big hand.
▪ Boxes
(2) A teacher can share the concepts of “Propeller. Airflow. Engine." or encourage students to share the experience about either the assembly of the model or the reflection of a game. (3) Students’ works can be displayed in the classroom.
(4) Remind students to clean up the desk, disassemble the model and put the building blocks back to the boxes. 4.
Extension Task
(1) A teacher introduces that the operating principle of a propeller-driven plane is to generating a pulling force by the engine’s rotation and this pulling force makes the airplane move forward. Record & Feedback
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Oral
Present ation