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小学数学七册修订本(今秋始用)《小数与复名数》一节,除增添一段叙述和两个例题外,还删掉例题一个,改换例题三个,相应习题也作了增删工作。其突出特点在于加强了量的计量知识的复习。通用教材里的长度,重量等计量单位知识、穿插在1～6各册教材中,各种单位进率与高低级单位名数化聚,被分割成几个片断,在原试用本中,又很少有复习机会,学生很容易遗忘,致使“小数与复名数”成为教学中的一个难点。修订本注意对量的计量知识进行复习,我觉得这很有必要。应该怎样进行复习呢?笔者认为,可分两步进行教学。
The seventh edition of primary school mathematics (this autumn beginning) “Fraction and compound name” section, in addition to adding a narrative and two examples, but also delete the example of a, change the example of three, the corresponding exercises also made additions and deletions. Its prominent feature is to strengthen the review of the amount of measurement knowledge. General textbook length, weight and other units of measurement knowledge, interspersed in 1 to 6 volumes of textbooks, the rate of various units and high and low levels of name poly, is divided into several pieces, in the original trial, and very Less chance of reviewing, students are easy to forget, resulting in “decimals and the number of complex” has become a teaching difficult. This revision of the volume of measurement knowledge to review, I think this is necessary. How to review it? The author believes that teaching can be divided into two steps.