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只有立足于知识本源和数学思想的教学,才能使课堂具有生命力,使学生终身受益。最近,笔者有幸观摩了一节南京市青年优秀教师的展示课,这节课对矩形、菱形、正方形的概念及性质的课堂教学做了新的诠释。笔者深受启发,获益匪浅,现撰文与大家分享。1教材的编排“矩形、菱形、正方形概念及性质”是苏科版《义务教育实验教科书·数学》八年级上册第三章“中心对称图形(一)”第5节内容,教材中本章的主线是图形
Only based on the teaching of knowledge origin and mathematical thinking, can make the classroom vitality, so that students benefit for life. Recently, I was fortunate enough to observe a presentation class for outstanding young teachers in Nanjing, a new interpretation of the classroom teaching of the concepts and properties of rectangles, diamonds, squares. Inspired by the author, benefited a lot, now author and share with you. 1 textbook choreography “Rectangle, diamond, square concept and nature” is the Suke version of “compulsory education experiment textbook · Mathematics” eighth grade third chapter “center symmetrical graphics (a)” section fifth content, textbook The main line in this chapter is graphics