The Blackboard reference article from the Simple Wikipedia on 01-May-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Blackboard

A blackboard, also called a chalkboard, is a surface on which markings made with chalk are visible. It is used as a surface to write on.

Blackboards are often used to help teach. Blackboards are not used as much now. People use whiteboards instead.

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