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【教材简析】1.“小数的意义”是小学数学的基本概念之一。本节课是在学生初步认识一位小数和分数的基础上教学的,正确地认识小数的意义及其相关内容,是学习小数四则运算及其应用的重要基础,更是学生对“数”的认知的又一次扩展。2.学生学习小数的基础来源于两个方面:一是其已有知识,包括整数和分数的知识,特别是分母是10的分数含义;二是其生活经验,包括学生在生活中接触到的商品价格、长度单位、重量单位等。可以引导学生在预习课
[Textbook analysis] 1. “meaning of decimal ” is one of the basic concepts of elementary mathematics. This lesson is based on a preliminary understanding of a student to learn a decimal and scores based on the correct understanding of the meaning of decimals and its related content is an important basis for learning decimal arithmetic and its application, "The cognitive expansion of another. 2. The basis for students to learn decimals comes from two aspects: First, its existing knowledge, including the knowledge of integers and scores, especially the denominator is the meaning of the score of 10; second is its life experience, including students exposed in life Commodity price, length unit, weight unit and so on. Can guide students in pre-lessons