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教学内容:人教版2年级下册第7单元“万以内的加法和减法”例3、例4(P96～97)。教学目标:1.在具体情境中探索计算方法,能正确应用算理进行笔算几百几十加、减几百几十。2.在具体情境中,进行加、减法估算,增强估算意识。
Teaching content: PEP 2, Volume 7, Unit 7, “Addition and subtraction within ten thousand” Example 3, Example 4 (P96 ~ 97). Teaching Objectives: 1. Exploring the calculation method in specific situations, can be used correctly to calculate hundreds of dozens of pen calculations, minus hundreds of dozens. 2. In specific situations, add, subtract estimates, enhance the sense of estimation.