Chalk produce, and thus widely used in the developing world, calcium-based chalk can be made where the crumbling particles are larger and thus produce less dust, and is marketed as "dustless chalk". Colored chalks, pastel chalks, and sidewalk chalk (shaped into larger sticks and often colored), used to draw on sidewalks, streets, and driveways, are primarily made of gypsum. Chalk is a source of quicklime by thermal decomposition, or slaked lime following quenching of quicklime with water. In southeast England, deneholes are a notable example of ancient chalk pits. Such bell pits may also mark the sites of ancient flint mines,
Beyond the Blackboard Beyond the Blackboard Beyond the Blackboard is a Hallmark Hall of Fame made-for-television drama film starring Emily VanCamp and Treat Williams. It is based on the memoir by Stacey Bess titled "Nobody Don't Love Nobody". The story takes place in 1987 and follows a young teacher and mother of two who, fresh from college, ends up teaching homeless children at a school without a name. With the support of her husband, she overcomes fears and prejudice to give these children the education they deserve. This film was filmed in and around Albuquerque, New Mexico. This was the first project together