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小学数学知识有着特有的结构性和系统性,每一个知识点都不是独立存在的,它既需要前段的知识作为基础,又可以延伸为后段知识提供认知建构条件。《认识整万数》是苏教版小学数学四年级上册《认识多位数》的第一课时,学生在学习本节课内容前,在二年级下册已经认识了万以内的数,已经初步掌握了个、十、百、千这四个计数单位,而且了解了“万”这个新的计
Elementary mathematics knowledge has its unique structure and systematicness. Each knowledge point does not exist independently. It not only needs the knowledge of the previous stage as the foundation, but also extends the cognitive construction conditions for the later stage of knowledge. “Understanding the whole number” is the first lesson of the “fourth grade of the fourth grade of the Sujiao version of elementary school mathematics” to recognize the multi-digit “. Before the students learned the contents of this lesson, they already knew the number within a million in the second grade, Mastered a count of ten, one hundred, one thousand four units, but also understand the ”million " this new meter