Results for: Blackboard

Why are blackboards green?

At its inception, blackboards were only black. Although many now are green, the name still sticks. It's just like a permanent resident's ID card, called the "green card." It's (MORE)

How to you clean a blackboard?

Use a wet towel or sponge. put a few drops of detergent in the water. After the (slate0 board is dry, chalk it by rubbing the side of a stick of chalk all over it then erase i (MORE)

How do you refurbish blackboards?

To re-finish a slate blackboard that has been gouged and scratched you will need to balance your expectations with the amount of work you will need to do to get a good flat, s (MORE)
In Uncategorized

What is operation blackboard?

Operation Blackboard is a centrally sponsored programme which was started in 1987 immediately after the Rajiv Gandhi NPE of 1986 was released to supply the bare minimum crucia (MORE)
In Science

Why is the blackboard a solid?

Because solids work better than a liquids for the purpose of displaying information vertically. The molecules of the blackboard are rather tightly bound to each other and sta (MORE)
In Uncategorized

What is a blackboard chalk?

Blackboard chalk is natural white chalk that has been ground up and  then processed into short rods that is then used to write or draw  on a blackboard - usually in a school (MORE)