论小学数学深度教学——以四个版本教材《小数的认识》为例

On the in-depth Teaching of Mathematics in Primary Schools:Take the Textbooks Understanding of Decimals as an Example

本文对四个版本教材中关于《小数的认识》的内容进行分析,梳理其中的教学重点与难点。并从小数发展史的角度把握教学、从数系扩充的视角把握教学内容、借助几何直观把握知识本质、合理利用数轴把握教学、密切联系生活实际等五个方面解读各版本的教学侧重点。

This article understands the Understanding of Decimals in various versions of textbooks by interpreting the textbooks of curriculum standards.Combing the teaching key points and difficulties of this course,and making clear the understanding of decimals in different textbooks.Based on the richness and complexity of the connotation under the new curriculum standard,this paper interprets the four versions of mathematics textbooks to extract the teaching difficulties and break through the important ideas of decimal teaching.