1. Apply the law of perceived intensity
The stimulus acting on the sensory organs must reach a certain intensity in order to be clearly perceived by us. Therefore, the teacher should speak loudly, speak at a moderate speed and write clearly on the blackboard so that the whole class can understand and see. When making and using visual AIDS, teachers should also consider whether the size, color and sound of visual AIDS can be clearly perceived by the whole class.
2. Apply the perceptual law of the difference between the object and the background.
When the perceived object is quite different from the background in color, shape, sound, etc. The perceived object is easily perceived. For example, when giving lectures, important knowledge can be repeated several times to increase the volume; When writing on the blackboard, you can use large words for important parts, draw lines under those words and use colored chalk; Don't demonstrate dark teaching AIDS in front of the blackboard; When using the wall chart, you can cover the parts that students don't need to see; When making teaching AIDS, we should pay attention to highlighting the perceptual objects from the background.
3. Using the law that moving objects on static background are easily perceived.
We know that moving objects are easy to be perceived and attract people's attention in a static background. Therefore, using mobile teaching AIDS, demonstrating experiments, showing slides, teaching movies or videos can all play a good teaching effect.
4. Apply the combination rule of perception