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2014年秋季,根据“课标”(2011年版)修订的教材开始了全面使用。苏教版教材中关于“图形与几何”有了较大的改动,本文以四年级上册“认识平行”为例,进行实验教材与修订教材的比较与分析,以便能更好地解读教材,以期提高课堂教学的实效性。不变新旧两个版本教材的共同之处体现在如下四个方面。1.教材的结构不变。新旧教材的结构都是:实物图上的直线——抽象成三组直线——分类——揭示互相平行的意义——举例互相平行——画一组平行
In the autumn of 2014, the teaching materials revised according to “Courses Standard” (2011 Edition) have been fully used. In the teaching materials of the Sujiao Version, there is a big change on the “Graphics and Geometry”. In this paper, we compare and analyze the experimental teaching material and the revised teaching material by taking the fourth grade on the “parallel” as an example, in order to better Interpretation of teaching materials, with a view to improving the effectiveness of classroom teaching. The same old two versions of the textbook common in the following four aspects. 1. The structure of teaching materials remains unchanged. The structure of the new and old textbooks are: the straight line on the physical map - abstract into three straight lines - classification - to reveal the meaning of parallel to each other - for example, parallel to each other - to draw a parallel