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在学完北师大版教材三年级上册“长方形和正方形的周长”以后,我设计了一节练习课。怎样让学生进一步熟练掌握以上两种图形周长的计算方法,思维能力得到一定程度的发展和提升呢?我选用了一张长方形纸作为教具和学具,在引导学生操作与思考中来落实教学目标。
After studying the third edition of Beijing Normal University version of the book on the “perimeter of the rectangle and the square”, I designed a practice class. How to make students more proficient in the calculation of the above two kinds of graphical perimeter, thinking ability to a certain extent, the development and improvement? I chose a rectangular paper as a teaching aids and learning tools, to guide students in the operation and thinking to implement the teaching aims.