第二课堂开始后,小亮举手,“王老师,上一次您说过‘光和色很有趣’的话,今天您证实一下可以吗?”王老师说:“可以的!”王老师拿过小黑板,在上面用红色、蓝色粉笔各画上一朵花,又用绿色粉笔画上叶子。然后他关了教室的灯,教室里漆黑一片。这时,王老师用红色透明玻璃纸蒙在手电筒的玻璃上。然后向小黑板照 After the beginning of the second class, Xiao Liang raised his hand, “Teacher Wang, the last time you said 'light and color is very interesting', can you prove it today?” Teacher Wang said: “Yes!” Small blackboard, with a red, blue chalk painted a flower on each, and then painted with green chalk leaves. Then he closed the classroom lights, the classroom dark. At this moment, teacher Wang was covered in the flashlight glass with red transparent cellophane. Then take a photo of the little blackboard