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课前准备:每个小组配备一个水槽、一把镊子、两个放大镜、一份实验报告和一只小螃蟹。课堂实录:师:我发现大家一走进实验室就显得特别兴奋,能告诉我为什么吗?生:我看见水槽里有小螃蟹。生:我觉得很好奇。生:这节课我们怎样研究蟹呢?它有什么值得我们研究的?师:你们已经想到那么
Pre-class preparation: Each group is equipped with a sink, a pair of tweezers, two magnifying glass, a lab report and a small crab. Class Record: Teacher: I found everyone was particularly excited as soon as I walked into the lab. Could you tell me why? Student: I saw a small crab in the sink. Health: I feel very curious. Health: How do we study crab in this lesson? What is it worth to study? Teacher: You already thought of that