本单元学习内容主要包括比例的意义、比例的基本性质、成正比例和反比例的意义以及比例的应用。下面对教材内容、体系特点以及教学方法,做简要分析。一、教材分析1.挖掘概念内涵,构建知识体系比例是小学阶段需要学习和掌握的重要基础知识,也为中学的数学学习打 The learning content of this module mainly includes the meaning of ratio, the basic nature of ratio, the meaning of proportional and inverse proportion, and the application of ratio. The following textbook content, system characteristics and teaching methods, make a brief analysis. First, the textbook analysis 1. Excavate the concept of connotation, the proportion of building a knowledge system is an important basic knowledge that needs to be learned and mastered in primary school stage, and also plays a role in secondary school mathematics learning