SAMPLE Lesson 13 Fan
Total Time
Understand the scientific principles of the adjustable speed modes by observing the model's operation.
Course
Objectives
Develop the ability to analyze and improve the structure through group discussion.
60 mins
Assemble the fan with building blocks and try to demonstrate the principles applied in the model.
Keywords Energy storage facilities. Speed regulation mechanism.
Teaching Guide 1.
Increase Students’ Motivation
(1) A teacher lectures the topic story. Students listen and try to comprehend the lesson.
Time (mins)
5
Teaching Resource
Assessm ent
Self-awa Suppleme ntal slides reness
(2) A teacher demonstrates the model of this lesson - Fan. Please ask students to think about how to make it work differently. (3) Brainstorming Is there any way we can increase the motor’s output power? With a set of batteries in series.
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SAMPLE 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.
10 20
(3) Encourage students to modify the model. If a student finishes the adjustment, he or she can do the “Hands-on Experiment” first.
Participa Electronic whiteboar tion d
Projector & Screen
Tablet or computer
Building blocks
(4) Hands-on Experiment Observe the differences in the movement of a motor connected to a series power supply, both before and after turning the supply on. A The turning speed will be faster after a series power 15 is added. (5) Hold a contest. Students can discuss and practice during the contest. (6) Hands-on Creativity Switch the order of the two power supplies and observe any differences in the motor’s movement. Encourage students to modify the model and observe the record. 3.
Integrated Learning
(1) Display all the models of each group. Give the winner 10 group a big hand.
Model Boxes
(2) A teacher can make a review of the concepts of “Energy storage facilities. Speed regulation mechanism." Or this teacher can 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) Encourage students to find out relative things in daily life. (2) Let students modify the model and see whose fan is the most interesting one. Record & Feedback
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Oral Presenta tion