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In the early 1980s–1990s, overhead projectors were used as part of a classroom computer display/projection system. A liquid-crystal panel mounted in a plastic frame was placed on top of the overhead projector and connected to the video output of the computer, often splitting off the normal monitor output.
The binomial cube is a cube that has the following pieces: one red cube, three black and red prisms, three black and blue prisms, and one blue cube. A box with eight prisms represent the elements of ( a + b ) 3 {\displaystyle (a+b)^{3}} or: a 3 + 3 a 2 b + 3 a b 2 + b 3 {\displaystyle a^{3}+3a^{2}b+3ab^{2}+b^{3}}
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USDA Organic milk cap label A bunch of bananas with a label A label with faux embossing A label made with embossing tape Shirt with labels. A label (as distinct from signage) is a piece of paper, plastic film, cloth, metal, or other material affixed to a container or product, on which is written or printed information or symbols about the product or item.
The Center's solar cube A donated DCSS rocket and RL 10B-2 engine outside the Center. In 1984, the Boards of the Exploratory Learning Center (now the Heritage Museum of Orange County) and the Experience Center joined to form the Discovery Museum of Orange County with the dual goals of teaching children what life was like in Orange County in the 1900s and creating a world-class science center.
The first classroom uses of large blackboards are difficult to date, but they were used for music education and composition in Europe as far back as the 16th century. [14] The term "blackboard" is attested in English from the mid-18th century; the Oxford English Dictionary provides a citation from 1739, to write "with Chalk on a black-Board". [15]
It often appears on hazardous equipment, in instruction manuals to draw attention to a precaution, on tram/train blind spot warning stickers and on natural disaster (earthquake, tsunami, hurricane, volcanic eruption) preparedness posters/brochures—as an alternative when a more-specific warning symbol is not available.
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