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【教学内容】苏教版(国标本)四年级上册第二单元。【教学过程】一、合理分类,感知“线”的特征1.分一分:请你仔细观察一下,把它们分成两类,并说说你分类的理由。(出示图形:三条曲线、两条线段、两条射线、两条直线)学生观察讨论分类。引导归纳:一类是弯曲的
Teaching content】 【Soviet version (national standard) fourth grade on the second unit. Teaching process A reasonable classification, perception “line ” characteristics 1. Points: Please look carefully, they are divided into two categories, and talk about your reasons for classification. (Show graph: three curves, two lines, two rays, two lines) Student observation Discussion classification. Lead to induction: one is curved