They have been a staple in virtually every schoolroom around the world. What are we talking about? Well the chalkboard of course! Let’s discuss this useful product further. A chalkboard is a hard flat surface. Early versions of the product were made from flat pieces of rock. It evolved to where the flat rock could be made fairly thin and applied to a lighter weight backing. Choose from the bestselling Chalkboards on Amzon.com ~ low prices and fast shipping… Pieces of chalk would leave their mark on the surface and could also be erased by washing