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认识正方形
孙红侠
洛阳市新安县特殊教育学校
教学内容: 培智五年级生活数学《认识正方形》
教学目标:
1.知识目标:认识正方形,知道正方形的特征及正方形高和底的含义;
2.能力目标:通过动手操作和观察比较使学生知道什么样的图形是正方形;
3.情感目标:体验数学与生活的联系,培养学生学习数学的兴趣。
教学重点: 掌握正方形的特性
教学难点:画指定的正方形
教学方法:讲授法、操作法
教具准备:PPT课件演示。
教学过程
一、创设情境,导入新课
1.出示图片,找出图中的正方形;(也可以出示粉笔盒、学具盒,让学生辨认其中的正方形导入)
2.生活中有哪些物体的形状或表面是正方形?
3.导入新课。
二、操作感知,理解概念
1.发现正方形的特征:请你画出一个正方形。边画边想:正方形有几条边?几个角?几个顶点?展示学生画的正方形,组织交流:正方形有什么特点?让学生在本子上自己试着画出正方形。
反馈,教师根据学生的汇报板书,标出正方形各部分的名称。
2.概括正方形的定义
引导:大家对正方形的特征达成了一致的看法。能不能用自己的话概括一下,什么样的图形叫正方形?
3.用4根小棒摆正方形,学生的回答可能有下面几种情况:组织学生在讨论中理解“四条线段”“围成”。用4根小棒摆四边形,看看
各能摆出几个?(小棒的长度都一样。)你发现了什么?
三、实验解疑,探索特性
提出问题
出示教材第9页插图:图中哪儿有正方形?找一找我们的教室里都有哪些地方有正方形?
四、巩固练习
这节课我们学习了什么?你对正方形有了哪些进一步的认识?
五、教学反思:
学生观察着实物,A类和B类学生能够正确的辨认出正方形,能比较清楚的说出正方形的特征,但学生对于画出正方形有难度,需要多指导学生练习。
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【90白鸭绒】男装冬新款时尚韩版工装外套连帽中长款羽绒服男】
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孙红侠
洛阳市新安县特殊教育学校
教学内容: 培智五年级生活数学《认识正方形》
教学目标:
1.知识目标:认识正方形,知道正方形的特征及正方形高和底的含义;
2.能力目标:通过动手操作和观察比较使学生知道什么样的图形是正方形;
3.情感目标:体验数学与生活的联系,培养学生学习数学的兴趣。
教学重点: 掌握正方形的特性
教学难点:画指定的正方形
教学方法:讲授法、操作法
教具准备:PPT课件演示。
教学过程
一、创设情境,导入新课
1.出示图片,找出图中的正方形;(也可以出示粉笔盒、学具盒,让学生辨认其中的正方形导入)
2.生活中有哪些物体的形状或表面是正方形?
3.导入新课。
二、操作感知,理解概念
1.发现正方形的特征:请你画出一个正方形。边画边想:正方形有几条边?几个角?几个顶点?展示学生画的正方形,组织交流:正方形有什么特点?让学生在本子上自己试着画出正方形。
反馈,教师根据学生的汇报板书,标出正方形各部分的名称。
2.概括正方形的定义
引导:大家对正方形的特征达成了一致的看法。能不能用自己的话概括一下,什么样的图形叫正方形?
3.用4根小棒摆正方形,学生的回答可能有下面几种情况:组织学生在讨论中理解“四条线段”“围成”。用4根小棒摆四边形,看看
各能摆出几个?(小棒的长度都一样。)你发现了什么?
三、实验解疑,探索特性
提出问题
出示教材第9页插图:图中哪儿有正方形?找一找我们的教室里都有哪些地方有正方形?
四、巩固练习
这节课我们学习了什么?你对正方形有了哪些进一步的认识?
五、教学反思:
学生观察着实物,A类和B类学生能够正确的辨认出正方形,能比较清楚的说出正方形的特征,但学生对于画出正方形有难度,需要多指导学生练习。
文章分享来自微信公众号特教梦
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