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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 Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.
Chalkboard art or chalk art is the use of chalk on a blackboard as a visual art. [1] It is similar to art using pastels and related to sidewalk art that often uses chalk. Chalkboard art is often used in restaurants, shops or walls. [2] Chalkboard art has also been done on large boards while storytelling on beaches and in Churches.
Bulletin boards are often made of a material such as cork to facilitate addition and removal of messages, as well as a writing surface such as blackboard or whiteboard. A bulletin board which combines a pinboard (corkboard) and writing surface is known as a combination bulletin board.
The American Mathematical Society created a simple chalk-style blackboard bold typeface in 1985 to go with the AMS-TeX package created by Michael Spivak, accessed using the \Bbb command (for "blackboard bold"); in 1990, the AMS released an update with a new inline-style blackboard bold font intended to better match Times. [17]
Blackboard may also refer to: Black board (Soviet policy), sign used in the Soviet era publicly to chastise farms or factories for such things as failing to meet targets or opposing collectivisation; Blackboard bold, a style of typeface often used for certain symbols in mathematics and physics texts; Blackboard Inc., an e-learning software company
Today's Wordle Answer for #1237 on Thursday, November 7, 2024. Today's Wordle answer on Thursday, November 7, 2024, is EVENT. How'd you do? Next: Catch up on other Wordle answers from this week.
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