任务二:实验记录单中的记录被打乱了,请你根据实验结果将正确的关系连线。
Cause
Effect
1. The small box is light.●
● A. Things can move fast and go far.
2. The big box is heavy. ●
● B. It is hard to move heavy things.
3. Use a small force. ●
● C. It is difficult to push. It needs a big force to move.
4. Use a big force. ●
● D. It is easy to push. It needs a small force to move.
任务三:请你结合生活经验,观察图片,完成下列句子。

1. The is . It needs a force to move.
2. The is . It needs a force to hold.
任务四:发明让生活更便利。有哪些发明可以在生活中帮我们移动物品呢?
1. What invention can help us lift heavy things easily?

2. What invention can help us move heavy things easily?

任务二: 1. D 2. C 3. B 4. A
任务三:
1. The washing machine is heavy. It needs a big force to move.
2. The watch is light. It needs a small force to hold.
任务四:
1. A lever can help us lift heavy things easily.
2. A wheel can help us move things easily.