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高三化学二轮复习,一般认为就是把重难点知识挑出来再“纵向”强化一遍,这往往导致复习教学方法比较单一,缺乏“横向”构建知识体系的有效策略.同时,在具体操作中,高三二轮复习往往脱离了化学学科的实验特色,重点知识的呈现方式缺乏新意,课堂授课难以做到生动有趣.在近几年的高三二轮复习中,笔者尝试寻找合适的知识载体,精心设计实验组,横向梳理知识群,激发了学生学习的热情,取得了良好的教育教学效果.本文选用的知识载体是高锰酸钾,介绍二轮复习的“载体式”实验组的设计方案.
It is generally believed that it is to pick out the knowledge of heavy and difficult points and reinforce it once again, which often results in a single reviewing teaching method and an effective strategy of constructing a knowledge system without “horizontal direction.” At the same time, In the operation, the high school and junior high school review often get rid of the experimental characteristics of the chemistry subject, the lack of new ideas in the key knowledge presentation and the difficulty in class teaching are vivid and interesting. In recent years, Knowledge carrier, elaborate design of experimental group, horizontal combing of knowledge group, aroused the enthusiasm of students learning and achieved a good teaching effect of education.This selection of knowledge carrier is potassium permanganate, introduced the second round review “carrier type ”, Experimental group design.