一、设计思路近年来,框图型推断题一直是各地中考化学试卷中常见而又十分重要的题型,框图型推断题具有关系复杂、知识点多、思维量大、变化多端、综合性强等特点,是考查学生分析推理、综合应用等能力的题型,具有很好的区分度和选拔功能。如何让学生能得心应手地解决这类题目,笔者设计了在导学稿的基础上添加几个微课,通过引导学生熟记解框图型推断题的基础知识点,掌握解推断题的一般思路,通过习题加以巩固和应用,构建 First, the design ideas In recent years, the block diagram inference questions has been a common and very important questions in the entrance exam chemistry papers, block diagram inference questions with complex relationships, knowledge, more thinking, variety, comprehensive and so on Characteristics, is to examine student analysis reasoning, comprehensive application of the ability of the type, with a good distinction and selection function. How to make students can easily solve such problems, the author designed to add a few micro-class on the basis of guided reading, by guiding students to remember the basics of inference block diagram inference, to master the general idea of ​​solving inference questions, By exercises to consolidate and apply, build