Why are all the blackboards in the classroom changed to green?

The blackboard in the classroom was changed to green for the following reasons:

1. Protect eyesight: The traditional blackboard is usually black, and green is less irritating to the eyes, which is more conducive to students' eyesight protection. Reading and writing on a black background for a long time will make your eyes feel tired, and green can effectively alleviate this fatigue.

2. Improve learning efficiency: Green is a mild color, which can make people feel relaxed and comfortable, and is conducive to improving students' learning efficiency. Studies have shown that green can stimulate the left hemisphere of the brain and help improve logical thinking and analytical ability.

3. Environmental protection: Green blackboards usually use environmentally friendly and nontoxic water-based pigments, which are harmless to human body and meet the requirements of modern education for environmental protection.

4. Beauty: The green blackboard gives people a fresh and natural feeling, which can make the classroom environment more beautiful and help to create a good learning atmosphere.

5. Easy to clean: the surface of the green blackboard is smooth, which is not easy to accumulate dust and is more convenient to clean.

6. Reduce reflection: The traditional blackboard surface is easy to reflect light, which affects students' sight. Proper surface treatment of green blackboard can effectively reduce the reflection of light and make students see the blackboard more clearly.

Generally speaking, the emergence of green blackboard is the result of comprehensive consideration of environmental protection, human health and teaching effect in the field of education. It not only helps to protect students' eyesight and improve learning efficiency, but also makes the classroom environment more beautiful and helps to create a good learning atmosphere.