《数学课程标准》在“总体目标”中指出:通过数学的学习,学生能够“体会数学与自然及人类社会的密切联系,了解数学的价值,增强对数学的理解和学好数学的信心”。学习数学的兴趣和学好数学的信心,对学生来说是十分重要的问题。在国家标准一二年级的教材中,每个知识点的编排都是按照“问题情境——建立模型——解释与应用”的结构,即创设一个学生十分熟悉 The “Mathematics Curriculum Standard” states in “General Objectives” that through mathematics learning, students can “understand the close connection between mathematics and nature and human society, understand the value of mathematics, enhance their understanding of mathematics and learn mathematics.” Studying math’s interest and learning math’s confidence is a very important issue for students. In the first and second year of the national standard textbook, the arrangement of each knowledge point is in accordance with the “problem situation - the establishment of model - interpretation and application” structure, that is, a student is very familiar with