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A chalkboard is a smooth, dark surface used for writing with chalk in a classroom. An ideal chalkboard should be at a height of 28 inches for grades 1-2, 32 inches for grades 3-4, and 36 inches for grades 5-6. Chalkboards have advantages such as being readily available, inexpensive, accommodating a large writing space, and easy to clean. However, writings cannot be saved and chalkboards are always dusty. Proper utilization guidelines include protecting the writing surface, avoiding overwriting, preparing materials in advance, and writing legibly from left to right. Some blackboards are green colored.








