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人教版数学七年级下册,将“总体、个体”概念定义的笼统、不确切,使学生对“总体、个体”类问题含糊不清、模棱两可.例如:10.1统计调查中问题2:某校有2000名学生,要想了解全校学生对新闻、体育、动画、娱乐、戏曲五类电视节目的喜爱情况,怎样调查?教科书指出问题中全校学生是总体、每名学生是个体,笔者认
People's PEP version of the seventh grade of mathematics, the “overall, individual,” the concept of definition of general, imprecise, so that students “overall, individual ” category ambiguous, ambiguous .For example: 10.1 statistical problems 2: a school has 2,000 students, in order to understand the school's favorite news, sports, animation, entertainment, drama five TV programs, how to investigate? Textbooks pointed out that the problem in the whole school students are overall, each student is an individual, I think