Why is the blackboard in the classroom now green instead of black?

The blackboard in the classroom now is actually a type of whiteboard, The blackboard in the classroom is usually green instead of black, mainly for the following reasons:

1. Low eye fatigue: Green has less stimulation on the human eye, and compared to black blackboards, green blackboards can reduce students' eye fatigue when staring at the blackboard for a long time. This is beneficial for students' learning outcomes and visual health.

2. Good display effect: The green blackboard has a higher reflectivity, which can better display the written content of white or colored chalk, making it easier for students to see clearly.
3. Good anti glare performance: The green blackboard has good light reflection performance, which can reduce the reflection and refraction of light, reduce the interference of glare on students' vision, and improve learning effectiveness.
4. Strong durability: Green blackboards are generally made of porcelain or coated materials, which have good durability and wear resistance, can withstand long-term use and wiping, and extend their service life.
In summary, the use of green blackboards in the classroom is to protect students' visual health, improve learning outcomes, and have good durability and display effects.