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高中教材上的实验分演示实验和学生实验两种。做好演示实验对整个教学过程有着至关重要的作用,它可以帮助学生形成化学概念,理解和巩固化学知识,培养学生观察现象、分析问题、解决问题的能力,获得比较熟练的实验技能。但怎样才能灵活地做好教材上的演示实验呢?我认为以下几种方法在教学中是比较实用的:1 以教材为本,边演示边讲解这是一种最常用的方法,它的优点是在于直观、简单,更有利于教师控制整个课堂秩序,
There are two types of experiments in high school textbooks: demonstration experiments and student experiments. Doing a demonstration experiment is of vital importance to the entire teaching process. It can help students form chemical concepts, understand and consolidate chemical knowledge, develop students’ ability to observe phenomena, analyze problems and solve problems, and obtain more skilled experimental skills. But how can we flexibly do a demonstration experiment on the teaching materials? I think the following methods are more practical in teaching: 1 Based on the teaching materials, it is the most common method to demonstrate while demonstrating this, and its advantages It is intuitive and simple, which is more conducive to teachers’ control of the entire classroom.