设计意图最近,我的嗓子有点嘶哑,就去药店买了一些胖大海泡茶喝。孩子们看到我杯中的胖大海后,都好奇地问:“这是什么呀?”而当他们看到放入杯中的胖大海刚开始很小,过不了多久却变得非常大时,一个个惊讶不已,追着问我:“它怎么会变得这么大的呀?”于是,围绕孩子们关注的这一热点话题,生成了本次活动。我选择木耳、银耳、玉米粒、黄豆、胖大海等作为实验材料,让孩子们在实验操作 Design intent Recently, my voice a little hoarse, went to the pharmacy to buy some fat sea water to drink. After they saw the fat sea in my cup, the children curiously asked: “What is this?” And when they saw the fat sea into the cup just beginning to be small, it was not long before it became very Large, one by one surprised, chasing and asked me: “How it will become so big?” So, around this hot topic of concern to children, the event was generated. I choose fungus, white fungus, corn kernels, soybeans, fat sea as the experimental material, so that children in the experimental operation