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 Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.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

   en.wikipedia.org/wiki/Chalkboard_scraping

   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 ...

4. Chalkboard art - Wikipedia

   en.wikipedia.org/wiki/Chalkboard_art

   Chalkboard art. Children's drawing on a chalkboard. 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]

5. Free Online Games: Play board games, card games, casino games ...

   www.aol.com/games

   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

6. Free Online Board Games - No Downloads - AOL Games

   www.aol.com/games/board

   Nothing to download, play free board games right now! Browse and play any of the free online board games for free against the AI or against your friends. Enjoy classic board games such as Chess ...

7. Do Not Erase: Mathematicians and Their Chalkboards

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

   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.

8. The 28 Top Free Fitness YouTube Channels of 2021 - Healthline

   www.healthline.com/health/fitness/free-youtube...

   15. Rebecca-Louise. Rebecca-Louise offers dozens of full-body workouts that can be done from the comfort of your own home with little to no equipment. You can opt for a 40-minute full-body workout ...

9. 8 Best Online Resources for Depression - Healthline

   www.healthline.com/health/mental-health/online...

   Online-Therapy. cognitive behavioral therapy. $39.95, $59.95, or $79.95 per week. does not accept insurance, but you can request reimbursement or direct payment for services. Lemonaid ...