Looking for a fun and inexpensive outdoor activity? Here are 25 fun things to do with sidewalk chalk that will keep your kids ...

Susan Melton started a Sidewalk Chalk Project to spread a positive message. On Wednesday, she celebrated her 5,000th straight ...

Susan Melton started the Sidewalk Chalk Project in 2011 and hasn't missed a day of spreading positive messages.

While Tums and sidewalk chalk both share the chemical calcium as one component within their bases, they are not the same ...

Chalk is fun to draw with, and some people even get really good at using it to make art on the sidewalk. If you don’t like tediously developing such skills, though, you could go another ...

Together, they make the substance, calcium phosphate. Sidewalk chalk is made from calcium and sulfate, which makes calcium sulfate. One of the most common chemicals connected to calcium is called ...