一是利用演示、挂图,使学生一目了然。在化学课堂教学中,有时教学设备较少或没有,有些现象学生无法观察,很难得出相应的结论。这时,可以给学生做一些简单的演示,或制作一些挂图,使学生一看就可理解。如,化学上讲温度对化学平衡的影响,可以用二氧化氮平衡球给学生演示;分析化学 First, use the demo, flip chart, so that students at a glance. In chemistry classroom teaching, sometimes teaching equipment is less or not, some phenomenon students can not observe, it is difficult to draw the corresponding conclusions. At this time, students can make some simple presentations, or make some wall charts, so that students can understand a look. For example, the chemical effect of temperature on the chemical equilibrium, you can balance the ball with nitrogen dioxide to the students demonstrate; Analytical Chemistry