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三年级是学生小学学习生涯的一个重要阶段,三年级数学无论在知识的数量和难度上都有了提升。纵观三年级上册,学生对于长正方形的特征及周长这一单元的知识掌握得并不扎实。如何让学生能够厘清知识点并有效应用、复习课上得高效是每个老师思考的问题。现就三年级上册的长方形和正方形单元的复习,从一张长正方形纸说开去。一、理清概念,明晰特征新课改的《数学课程标准》提出:“从学生已有的生活经验出发,让学生亲身经
The third grade is an important stage of primary school learning career, third grade mathematics in both the number and difficulty of knowledge have been improved. Throughout the third grade, students have a long grasp of the characteristics of the square and perimeter of this unit to master the knowledge is not solid. How to make students can clarify the knowledge and effective application of points, the efficiency of the review class is every teacher thinking. Now on the third grade of the rectangular and square unit of review, said from a long square paper. First, clarify the concept of clear characteristics of the new curriculum reform, ”Mathematical Curriculum Standards“ put forward: ”From the students’ existing life experience, let students personally