lever

彰化縣溪州鄉溪州國小

The students learn about levers by making one in class. 

學生們試著製作槓桿來學習槓桿原理。

The lever moves up and down from the weight of the marbles.

 彈珠的重量讓槓桿上下擺動。

彰化縣彰化市中山國小

The students are learning about the lever principle.

學生們正在學習槓桿原理。

They place different weights to see how the lever stays balanced.

他們放置不同的重物來觀察槓桿如何保持平衡。