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教学内容苏教版《义务教育课程标准实验教科书》小学数学五年级上册第一单元《认识负数》例1与课后练习一的相应习题。
Teaching content Jiangsu education version of “compulsory education curriculum standard experiment textbook” elementary school mathematics fifth grade on the first volume of “negative cognition” Example 1 and exercises after class exercises.