该教学演讲介绍了学生推动和拉力。
ThisTeaching Presentationintroduces the students to theforcesinvolved in pushing and pulling.
Use thisteaching resource调查力量science lessons.
This presentation covers the following topics:
- what is a force
- what is a push
- what is a pull
- the difference between a push and a pull in the world.
演讲结束时已经包括了课堂讨论和独立任务。
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