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【课堂回顾】一、情境出示出示ppt:学校准备给同学们做新校服,服装厂提供了红、黄、蓝、白四种颜色(呈现四种校服颜色)。如果你是校长,选择哪种颜色最合适呢?师:你觉得哪种颜色好呢?师:能不能根据一个人喜欢的颜色就决定选哪种颜色?生:不能。师:那怎么办?生:投票。师:投票为了什么?你们是不是说要知道大多数人的情况?出示ppt:应该选大多数同学最喜欢的颜色(“大多数同
[Class Review] First, the situation shows produce ppt: The school is prepared to give students a new uniforms, garment factories provide the red, yellow, blue, white four colors (showing four uniforms color). If you are the principal, which color is the best choice? Teacher: Which color do you think is good Teacher: Can you decide which color to choose based on one’s favorite color? Teacher: What to do? Health: Voting. Teacher: Voting for what? Do you mean to know the situation of most people? Show ppt: Most students should choose the most favorite color ( ”most of the same