初中化学演示实验教学的实施策略

On the Teaching Tactics Operating Demonstrative Experiment in Chemistry of Junior Middle School

演示实验是教师进行操作和讲解，学生进行观察和思考的一种教学活动．教师的演示进行得好，就容易激发学生的求知欲，提高教学效果；可以帮助学生从宏观世界走向微观世界，使概念、原理易于理解，使知识形象化；还可以帮助学生学习正确、规范化的操作技术和方法。

The demonstrative experiment is the teaching activity that the teacher operates and explains, students carry on that observe and think. The teacher＇s demonstration goes on well, it is apt to excite students＇ curiosity, improve the teaching result, and can help students to move towards the microcosmos from the macrocosm, make the concept and principle apt to understand well, make knowledge pictorialized, can also help students to study correct, normal operating technology and method.