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教学内容:人教版二年级上册数学教科书38页、39页“角的初步认识”第一课时。教材分析:角的初步认识是在学生初步认识长方形、正方形、三角形的基础上进行教学的。教材根据儿童的年龄特征和认知规律,提供了儿童熟知的三角板、剪刀等实物图,让学生对角有一个感性认识,能从生活中的事物中找角;再通过折角、做角、画角等探索性操作活动,使角的图形从实物中抽象出来,让学生了解角大小变化的规律和各个部分
Teaching content: PEP 2 grade mathematics textbooks 38 pages, 39 pages “the initial understanding of angle ” the first lesson. Textbook analysis: The initial understanding of angle is based on the initial understanding of students rectangular, square, triangle based on teaching. Textbook according to children’s age characteristics and cognitive rules, children’s well-known triangular plate, scissors and other physical map, so that students have a diagonal perception, can look for things from life; and then through the angle, angle, painting Angle and other exploratory activities, so that the angle of the graphics abstraction from the physical, so that students understand the law of the size and angle changes and various parts