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一三年级上册第一单元:生活中的大数(原第七单元)。本单元教材内容编排没有变化,更换了一些数据,强化了估算。共安排8课时(包括综合与实践)。第二单元:两、三位数乘一位数(整合单元)。本单元是由实验教材第四单元中两位数乘一位数和第九单元整合而成的,增加了多位数乘一位数的估算。共安排9课时。1.笔算乘法重新选择大自然的天使、动物的体重等学生感兴趣的素材,设计有关倍数关系的
The first three volumes on the first unit: the large number of life (former seventh unit). This unit textbook content arrangement did not change, replaced some data, and strengthen the estimation. Arrange a total of 8 hours (including synthesis and practice). The second unit: two or three digits by one digit (integration unit). The unit is composed of two units of the fourth unit of experimental teaching by one digit and ninth unit integration, adding a multi-digit by one-digit estimates. Arrange a total of 9 hours. 1. Penultimate multiplication to re-select nature’s angels, animal weight and other students interested in the material, the design of the relationship between multiples