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Writing lines is a long-standing form of school discipline, having survived even as other old punishments such as school corporal punishment and dunce hats fell out of favour in the 20th century. [2] In a 1985 study, over half of respondent teachers in an English-speaking country indicated awareness of the use of writing to discipline students. [5]
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 Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.
Chalkboard scraping. Scraping a chalkboard (also known as a blackboard) with one's fingernails produces a sound and feeling which most people find extremely irritating. The basis of the innate reaction to the sound has been studied in the field of psychoacoustics (the branch of psychology concerned with the perception of sound and its ...
Most of the photographs show the chalkboard in a moment drawn from the mathematician's work on it, depicting how mathematicians think, work, and communicate with each other. Some other photographs show chalk drawings that were deliberately created to be photographed for this book. The mathematicians themselves are not depicted.
Whiteboard. A whiteboard (also known by the terms marker board, dry-erase board, dry-wipe board, and pen-board) is a glossy, usually white surface for making non-permanent markings. Whiteboards are analogous to blackboards, but with a smoother surface allowing for rapid marking and erasing of markings on their surface.
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 ...
Chalkboard is a font released by Apple in 2003. It was released as part of Mac OS X v10.3 [1] and the 10.2.8 update . It is regularly compared to Microsoft's Comic Sans font, which has shipped with Mac OS since Mac OS 8.6 in 1999, although it is not a perfect substitute font since the two are not metrically compatible.
Clapperboard. A clapperboard, also known as a dumb slate, clapboard, film clapper, film slate, movie slate, or production slate, is a device used in filmmaking and video production to assist in synchronizing of picture and sound, and to designate and mark the various scenes and takes as they are filmed and audio-recorded.
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