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中国人说话爱打比方。比方打得好,可以生动形象地帮助人们理解问题。在人教版四年级数学下册四则运算及其定律的学习中很多师生认为“四则运算”的学习是相当枯燥乏味的。我在进行这部分的教学时,采用了“打比方”去教学,不但让学生学习兴趣十分浓厚,并且收益还相当地高!1.打比方认识“同级运算”。加减法是第一级运算,乘除法是第二级运算。学生在一年级认识并学习了加减法,到二年级认识学习了乘除法。在认识同级运算时,我把学生的学习经
Chinese people love to say the analogy. Such as playing well, you can vividly help people understand the problem. Many people think that the study of “arithmetic of four operations” in the fourth edition of the fourth edition of the PEP and the study of its laws is quite tedious. When I was in this part of the teaching, I used the “analogy” to teach, which not only made the students have a great interest in learning, but also got very high returns! Addition and subtraction is the first level operation, multiplication and division is the second level operation. Students recognize and learn the addition and subtraction in the first grade, and learn the multiplication and division by the second grade. In understanding the same level of computing, I put the student’s learning experience