一年级数学上册第3单元1_5的认识和加减法《比大小》重难点突破新人教版.doc

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1比大小1正确区分和记忆“”和“”和“” “” “” “”和“=”选择合适的摆放在两个数之间。教师先示范游戏之后,全体学生共同参与。在游戏中不仅让学生玩起来,也要让学生说出来。例如,一位学生的手势表示 34,另一位学生就要说出 3 小于 4,还要说明为什么要用这个符号。通过读一读、写一写、玩一玩小游戏的形式,增强学生对符号意义的理解,了解符号简洁、形象的特点,最终达到正确使用符号的目的。

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