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人教版小学数学改版后的教材与旧教材一个明显的不同是增设了“数学广角”这个单元的内容,就这套新教材的总体安排来看,它是在系统而有步骤地渗透一些重要的数学思想方法,如排列组合思想、推理思想、集合思想、等量代换思想、对策论思想、模型思想等。教材内容由简单到复杂,尝试把这些重要的数学思想方法通过学生可以理解的形式,采用生动有趣的事例呈现出来。所以教师要做的,就是要让学生领悟其中的思想,学会数学思维。但在平常的一些教学实践
PEP version of the primary school mathematics after the revision of the textbook and the old teaching material is an obvious difference is the addition of “mathematics wide-angle ” the content of this unit, the overall arrangement of this new textbook, it is systematic and step-by-step penetration Some important mathematical ideas and methods, such as permutation and combination of thinking, reasoning thinking, set theory, equal replacement theory, game theory, model thinking. Textbook content from simple to complex, trying to these important mathematical ideas and methods through the students can understand the form, with vivid and interesting examples of it. Therefore, teachers should do is to make students understand the ideas and learn mathematical thinking. But in some usual teaching practice