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  2. Blackboard - Wikipedia

    en.wikipedia.org/wiki/Blackboard

    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 Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.

  3. Do Not Erase: Mathematicians and Their Chalkboards

    en.wikipedia.org/wiki/Do_Not_Erase:...

    [1] [5] Most of the photographs show the chalkboard in a moment drawn from the mathematician's work on it, [1] depicting how mathematicians think, work, and communicate with each other. [5] Some other photographs show chalk drawings that were deliberately created to be photographed for this book. The mathematicians themselves are not depicted. [1]

  4. ChalkZone - Wikipedia

    en.wikipedia.org/wiki/ChalkZone

    ChalkZone is an American animated television series created by Bill Burnett and Larry Huber for Nickelodeon. [1] The series follows Rudy Tabootie, an elementary school student who discovers a box of magic chalk that allows him to draw portals into the ChalkZone, an alternate dimension where everything ever drawn on a blackboard and erased turns to life. [2]

  5. Blackboard bold - Wikipedia

    en.wikipedia.org/wiki/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), (real numbers), and (complex ...

  6. Eating chalk often can disrupt your digestive system and cause damage to your internal organs. risks of eating chalk. Complications of eating chalk consistently may include: tooth damage or ...

  7. Chalkboard art - Wikipedia

    en.wikipedia.org/wiki/Chalkboard_art

    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.

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