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本册教材安排存在一些缺陷。如在各单元中每个练习里的式题和应用题交叉出现,这样学生在运算上还未熟练掌握,甚至还未把概念彻底弄清,就马上要解应用题,是比较困难的。建议把式题和同类型的应用题按加、减、乘、除分别集中在一起,这样既能使儿童集中练习,让儿童熟练地掌握了运算法则后再解答应用题,又能彻底解决儿童对各种类型应用题的正确理解,并根据题目的要求列出算式;同时还能正确解答、计算,使儿童把已学得的加减乘除概念和四则运算技能技巧应用到应用题中去.通过应用题教学培养儿童逻辑思维和分析推理的能力.(一)公制单位的认识。这部分教材主要使学生认识公制长度、重量单位,知道它们的名称和相邻单位间的进率,能进
This book teaching materials arrangement has some defects. As in each unit in each of the exercises in the formula and application of cross-cutting, so that students have not yet mastered the operation, and even have not yet completely clear the concept, the problem should be solved immediately, it is more difficult. It is suggested that the type questions and the same type of application questions be added, subtracted, multiplied and divided respectively, so as to not only enable the children to practice intensively, let the children master the algorithms and then solve the application questions, but also solve the problems of children The correct understanding of various types of application questions, and according to the title of the requirements listed in the formula; the same time, correct answers, calculations, so that children have to learn the addition, subtraction and multiplication and division concept and four arithmetic skills applied to the application problem. The ability to cultivate children’s logical thinking and reasoning through the teaching of applied problems (A) Metric unit of understanding. This part of the textbook mainly enables students to recognize metric length and weight units, knowing their names and the rates of progress between adjacent units.