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《义务教育数学课程标准》中的基本理念指出“:学生的数学学习内容应当是现实的、有意义的、富有挑战性的。这些内容要有利于学生主动地进行观察、实验、猜测、论证、推理与交流等活动。”小学二年级对于米与厘米的学习,就是对此理念的最好阐释。
The basic idea in the Standard of Compulsory Education Mathematics Curriculum states that “students’ mathematics learning content should be realistic, meaningful and challenging, which should help students take the initiative to observe, experiment, guess and prove , Reasoning and exchange activities. ”" The second grade primary school for the study of meters and centimeters, is the best explanation of this concept.