SAMPLE Lesson 12 Shock Absorbers
Total Time
Understand the principles and applications of Pascal’s Law.
Course Objectives
Develop the spirit of active participation in activities.
Think about what can the operating principle of the shock absorber model be applied to.
60 mins
Keywords Shock Absorbers. Pascal’s Law. 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) Ask students whether the shock absorber can completely reduce the vibration. (3) Brainstorming Aside from cars, what other places are shock absorbers used? Carriage, bicycle, and elevator.
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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 Use an air pump and its tubes to compare how shock absorption differs when water is added. Pascal's law can apply to all the liquids. It is stated 15 that pressure at a point has infinite direction, and thus a pressure change at any point in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere. However, the air has no such effect. Therefore, the shock absorption effect is stronger after adding water. (5) Hold a contest. Students can discuss and practice during the contest. (6) Hands-on Creativity Change the flow direction of the tubes to create a model that can simultaneously lift and lower objects. A Encourage students to operate the model. 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 “Shock Absorbers. Pascal’s Law." 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 some items that use Pascal's law in life, such as jacks. Record & Feedback
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Oral Presenta tion