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  2. Blackboard - Wikipedia

    en.wikipedia.org/wiki/Blackboard

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 Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.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

    en.wikipedia.org/wiki/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.

  4. Interactive whiteboard - Wikipedia

    en.wikipedia.org/wiki/Interactive_whiteboard

    An interactive whiteboard ( IWB ), also known as interactive board or smart board, is a large interactive display board in the form factor of a whiteboard. It can either be a standalone touchscreen computer used independently to perform tasks and operations, or a connectable apparatus used as a touchpad to control computers from a projector. They are used in a variety of settings, including ...

  5. Tips for Living with Color Blindness - WebMD

    www.webmd.com/eye-health/living-with-color-blindness

    Write with only white chalk on a blackboard and only with black markers on a whiteboard

  6. Visual communication - Wikipedia

    en.wikipedia.org/wiki/Visual_communication

    Visual communication is the use of visual elements to convey ideas and information which include (but are not limited to) signs, typography, drawing, graphic design, illustration, industrial design, advertising, animation, and electronic resources. [1] Visual communication has been proven to be unique when compared to other verbal or written ...

  7. Whiteboarding - Wikipedia

    en.wikipedia.org/wiki/Whiteboarding

    Whiteboarding when used in the context of computing, is the placement of shared files on an on-screen shared notebook or whiteboard. Videoconferencing and data conferencing software often lets documents as on a physical whiteboard. In hybrid whiteboarding, special handwriting detection software allows for physical whiteboards to be shared with ...

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