一年级数学下册第4单元100以内数的认识解决问题教案2新人教版.doc

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1第六课时 解决问题教学目标:让学生在具体情境中学会解决问题,发展学生的数感。在解决问题的过程中,培养学生解决问题策略的多样性,提高学生解决问题的能力。教学重难点:让学生在解决问题“能穿几串”中理解几十里面有几个十。教学过程:一、创设情境,导入新课大家玩过串珠游戏吗?出示例 7。这里有些珠子,你会穿吗?板书课题二、互动新授1、教学例 7出示题目的要求:有 58 个珠子,10 个穿一串,能穿几串?从题目中你知道了什么?要解决的问题是什么?个别汇报。要想知道能穿几串,该怎样解答?A、 画图。圈一圈。B、 数的组成。58 里面有 5 个十和 8 个一。验证。1 串是 10 个,5 串就是 50 个,剩下的 8 个,正好是 58 个。2、想一想:如果是 5 个珠子穿一串,能穿几串?三、巩固梳理,拓展应用1、完成第 46 页的做一做。2、完成第 47 页第 14 题。四、课堂小结。2

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