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本节教材是人教版小学六年级下册内容,主要内容包含比例的产生、比例的意义、比例的记法和表示,通过这些知识的学习,可帮助学生认识比例的意义,为学习比例的基本性质打下基础。《课标(2011年版)》在“课程基本理念”中指出“学生的学习应当是一个生动活泼的、主动的和富有个性的过程。学生应当有足够的时间和空间经历观察、实验、猜测、计算、推理、验证等活动过程。”根据这个宏观理念,结合第二学段学生的思维特点:学生的活动空间相对于第一学段来说已经有了较大的拓展,他们感兴趣的问题涉及客观世界的方方面
This textbook is the sixth grade of PEP teaching contents, the main content contains the proportion of the production, the proportion of significance, the proportion of notation and expression, through the learning of these knowledge, can help students understand the meaning of proportion, to study the proportion of Lay the foundation for the basic nature. “The Course Standard (2011 Edition)” states in the “Basic Concepts of a Course” that “a student’s learning should be a lively, proactive and individualized process.” Students should have enough time and space to observe and experiment , Guessing, calculating, reasoning and verifying. "According to this macroscopic idea, combined with the thinking characteristics of the students in the second semester, the students’ activity space has been greatly expanded compared with the first semester. The questions of interest relate to every aspect of the objective world