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《反冲》一课在实验室里开始了,其中反冲的实验是本节课的重头戏。由于实验材料有限,实验是分组进行的。孩子们认真地查看着使用说明书,开始组装反冲车。在安装的过程中,不时有孩子举手示意我过去看一看,但当我走到马新阳他们组的时候,四个人齐说:“吕老师,我们的气球破了个小
The “kickback” lesson started in the lab, where the kickback experiment was the highlight of this lesson. Due to limited experimental material, experiments were performed in groups. The children looked carefully at the instruction manual and started assembling the recoil car. In the installation process, from time to time a child raised his hand gestures I used to take a look, but when I came to their group Ma Xinyang, four people together: "Teacher Lu, our balloon broke a small