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 Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.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

    en.wikipedia.org/wiki/Interactive_whiteboard

    An interactive whiteboard (IWB), also known as interactive board, interactive display, interactive digital 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 ...

  4. Whiteboard - Wikipedia

    en.wikipedia.org/wiki/Whiteboard

    A Whiteboard (also known by 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. The popularity of whiteboards increased rapidly ...

  5. Educational technology - Wikipedia

    en.wikipedia.org/wiki/Educational_technology

    Educational technology as technological tools and media, for instance massive online courses, that assist in the communication of knowledge, and its development and exchange. This is usually what people are referring to when they use the term "edtech". Educational technology for learning management systems (LMS), such as tools for student and ...

  6. Tips for Dealing With Colorblindness In Every Day Tasks - 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 Managing at work. Charts, graphs, and presentations that burst with color can make your job almost impossible.

  7. Nearsightedness vs. Farsightedness: How to Tell - Healthline

    www.healthline.com/health/nearsighted-vs-farsighted

    In short, nearsightedness means the ability to see things nearby with relative clarity, while farsightedness is the ability to only clearly see objects that are far away. Learn the differences ...

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