What are the advantages of the green blackboard, and the black blackboard has been replaced at once?
First, from the perspective of health, green has the function of protecting eyes, and black and white contrast is not very clear circumstances can also reduce the irritation of the eyes, with chalk on the blackboard writing in the green, not irritating to the eyes, to protect eyesight. So, from a healthy point of view, a green blackboard is better than a black blackboard.
And then talk about from the contrast, black and white contrast, can display the text better in teaching application, the equivalent of black without any visible light into the visual range, while white is all visible at the same time in the visual range, highlight the content of white on a black background is the most appropriate. So, from the point of view of teaching, black and white match is better than green blackboard.
Which color of the blackboard is better, I think it is all teaching supplies, but the green board is more environmentally friendly and healthy, in fact, there is not much difference. The background of the development in the current teaching equipment, black blackboard market is still relatively small, mainly because the traditional blackboard is black series cement, belonging to environmental protection blackboard, so in the process of development of the blackboard, the blackboard and blackboard black gradually cement equate, therefore in the development of the green blackboard blackboard and white and beige blackboard development more rapidly. At the same time, in the teaching more attention to environmental protection and classroom beautification, therefore, for the public acceptance ability, the green blackboard is easier to accept.
