材料:颜料,水,油,蜂蜜,冰块,盐, 透明的杯子,直径不要太大。 步骤:以前做过的鸡蛋的实验,现在猜猜honey will sink or float in the water? How about the ice? 1. pour the oil first then water, shake it to observe then wait for a while to see the oil is not in the bottom but float to the top 2. ...
材料准备:蜡烛,水,沙子,剪刀,卫生纸芯包好两头,其中一头扎一个小孔。透明盖子 课程步骤: 1 热身,what is a fire? What do we do with fire? Cooking? Warming? .... 2 light a candle. What shall we do to put out a fire? 3. Try using water, sand, scissors, and lid. 4. The Sound wave ...