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Rainbow and Freie Schule, German for an alternative school written with chalk on a blackboard, Germany - SuperStock
![Malayan Science researchers test school chalk alternatives to help local manufacturers, public school teachers Malayan Science researchers test school chalk alternatives to help local manufacturers, public school teachers](https://fs2.mapua.edu.ph/MHSS/Images/Malayan%20Science%20researchers%20test%20school%20chalk%20alternatives%20to%20help%20local%20manufacturers,%20public%20school%20teachers.jpg)
Malayan Science researchers test school chalk alternatives to help local manufacturers, public school teachers
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PoleGrip | Sports Grip | Chalk alternative | Sweat free for Weightlifting, Climbing, Bodybuilding, Gymnastics, Crossfit, Pole Dancing, Gaming and more : Amazon.co.uk: Sports & Outdoors
What is the alternative to using chalk in class? Can I use chalk pen markers/wet-erase markers in class? - Quora
![Axletic Liquid Chalk - Climbing Chalk Liquid: Must Have Gym Accessories for Gym Bag - Gym Chalk, Lifting Axletic Liquid Chalk - Climbing Chalk Liquid: Must Have Gym Accessories for Gym Bag - Gym Chalk, Lifting](https://m.media-amazon.com/images/I/61OG7feuLRL.jpg)