一、主要调整与变化(一)合理整合分数、比、百分数等教学内容根据实验区教师反馈的意见和建议,本册教材对分数、比、百分数等教学内容进行了合理整合,以凸显知识间的联系,帮助学生建立合理的认知结构。首先,把实验教材六年级上册《分数除法》和《比》合并成一个单元。分数、除法、比是有着紧密联系的数学概念,很多情况下它们是相同数量关系的不同表示形式。把这两个单元合并在一个单元教学,更有利于学生体会知识间的联系,构建模块化的知识系统。其次,把实验教材六年级上 I. Major Adjustments and Changes (I) Reasonable Integration of Score, Ratio, Percentage, etc. According to the feedbacks and suggestions from teachers in the experimental area, the teaching materials of this book have made reasonable integration of teaching contents such as score, ratio and percentage to highlight the relationship between knowledge Contact, help students to establish a reasonable cognitive structure. First, the sixth grade of experimental teaching book “division” and “ratio” into one unit. Scores, divisions, ratios are mathematical notions that are closely related, in many cases they are different representations of the same number of relations. Combining these two units in a single unit is more conducive to students’ understanding of the connection between knowledge and building of a modular knowledge system. Second, the experimental materials on the sixth grade