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Uses. Reusable writing surface on which text or drawings are made. A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.
Blackboard bold. Blackboard bold is a style of writing bold symbols on a blackboard by doubling certain strokes, commonly used in mathematical lectures, and the derived style of typeface used in printed mathematical texts. The style is most commonly used to represent the number sets ( natural numbers ), ( integers ), ( rational numbers ...
Khan Academy is an American non-profit [3] educational organization created in 2006 by Sal Khan. [1] Its goal is to create a set of online tools that help educate students. [4] The organization produces short video lessons. [5] Its website also includes supplementary practice exercises and materials for educators.
Blackboard Jungle is a 1955 American social drama film about an English teacher in an interracial inner-city school, based on the 1954 novel The Blackboard Jungle by Evan Hunter and adapted for the screen and directed by Richard Brooks. It is remembered for its innovative use of rock and roll in its soundtrack, for casting grown adults as high ...
Blackboard (design pattern) In software engineering, the blackboard pattern is a behavioral design pattern [1] that provides a computational framework for the design and implementation of systems that integrate large and diverse specialized modules, and implement complex, non-deterministic control strategies. [2] [1]
BlackBoard: African American Bestsellers is an organization that promotes bestselling titles written by and about African Americans. [1] The BlackBoard Bestsellers List was started in August 1991 by Faye Childs and Debbie Wade. The list appears monthly and is syndicated in newspapers. [2] BlackBoard gathers bestseller information from African ...
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