1. The blackboard cannot be cleaned with water or detergent. If you need to clean with a rag, it is recommended to clean with a slightly wet flexible rag.

Whiteboard cleaner and cotton cloth or paper towels can be used to clean the handwriting on the blackboard. At this time, you must not use rags, alcohol, gasoline, etc. Otherwise, it will destroy the blackboard to some extent.

3, it is forbidden to use double-sided tape, adhesive tape, glue, ink, marker and other grease or corrosive items to contact the blackboard/whiteboard, so as not to hurt the board. When the words on the blackboard have no effect, take the blackboard eraser to scrub as soon as possible.

Extended data:

Characteristics of various teaching blackboards:

1, the green board is dark green, written with chalk, which does not irritate people's eyes and is beneficial to protecting their eyesight; The surface of the whiteboard is white, and all kinds of water-based colored pens are used to write.

2. Color coated steel plate is made of high-quality alloy steel plate coated with wear-resistant coating. The thickness of the plate is mostly 0.3mm-0.4mm, which is wear-resistant, non-shedding, non-fading and durable. Good writing feel, clear handwriting, easy to write, easy to wipe and easy to try, less dust.

3. The new material composite plate is made of imported polymer alloy particles and epoxy resin by one-step pressing, and the surface is not treated. The thickness of the board is 3mm, and the writing is smooth, clear and lasting. After wiping, it does not slip, reflect light or remain, and the visual effect is excellent. After testing, the service life exceeds 15 years.

4. Magnetic Blackboard The inside of the blackboard is lined with magnetic strips or the surface is attached with magnetic particles. When in use, small teaching tools or pictures can be fixed with magnetic nails, magnetic blocks, etc., which is convenient for display.

5. Multifunctional combination board, interactive electronic whiteboard, screen projection board and staff music blackboard are the combination of traditional blackboard and modern technology. The traditional blackboard, with electronic whiteboard, projector, computer and corresponding teaching software and hardware, perfectly complements the defects of traditional teaching and makes modern teaching technology really enter the classroom, which is the inevitable trend of today's education development.

References:

Baidu encyclopedia-blackboard