物理实验很重要,本文谈谈初中物理教学中如何加强课堂实验。一、创造条件人人动手每个学生都动手的课堂小实验对于理解基本概念,掌握原理和规律效果颇佳,有些实验对激发他们的学习兴趣有着积极的作用。讲授“机械能”一节前,可让学生自制儿童玩具“跳得高”。取长方形硬纸板一块,橡皮筋一根。先沿纸板中线(图1中的AB)用刀片划一条刻痕,并在两边各剪两条细槽,把皮筋嵌入四条槽中,即制成如图2所示的“跳得高”。讲弹性势能的涵义时让大家把纸板压平在桌面上(用手指压住A Physical experiments are very important. This article talks about how to strengthen classroom experiments in junior high school physics teaching. First, to create the conditions everyone hands-on classroom experiments each student hands-on experiments for the understanding of basic concepts, master the principles and laws of good results, some experiments to stimulate their interest in learning has a positive effect. Before teaching the “mechanical energy” section, students can make their own children’s toys “jump high.” Take a piece of rectangular cardboard, a rubber band. First, along the cardboard centerline (AB in Figure 1), a score was scored with a blade, and two fine grooves were cut on both sides. The rubber bands were embedded in the four grooves, and they were made to “jump high” as shown in FIG. When we talk about the meaning of elastic potential, let everyone press the paper on the desktop (press A with your finger