第十六课

1. sixteen16Learning in springs弹簧里的学问

2. What happened to trampoline when playing trampoline? When pulling rubber band, what is the feeling on the hand?

玩蹦床时，蹦床发生了什么变化?拉橡皮筋时，手上有什么感觉?

Material package材料包

3. Sponge, cotton, foam, eggs, etc海绵、棉花、泡沫塑料、鸡蛋等

Activity process活动过程

4. Play, what to find? 玩一玩，有什么发现?

Thinking Navigation思维导航

5. What happens to the length of the spring when pulling the spring? How does the hand feel? What changes to the spring after release?

拉弹簧时，弹簧的长度发生了什么变化?手有什么感觉?  松手后，弹簧有什么变化?

6. 2.When pressing the spring, what do you find?压弹簧时，有什么发现?

7. When the spring is stretched or compressed, it produces a force to return to its original shape.

8. A force like this is elastic.

弹簧被拉伸或压缩时，会产生一种要恢复到原来形状的力。

9. A force like this is elastic.像这样的力是弹力。

10. Where does life use elasticity?生活中哪些地方利用了弹力?

11. I also know...我还知道...

12. Design an egg protector. 设计一个鸡蛋保护装置。

13. My method is...我的方法是...

Outreach activities拓展活动  

14. Make a elastic toy. 制作一个弹力玩具。