8 Easy Ways to Make Sidewalk Chalk wikiHow
Sep 05, 2013· To make sidewalk chalk, combine ¼ cup of warm water with ½ cup of Plaster of Paris in a bowl. Next, mix in 23 tablespoons of tempera paint. The more paint you use, the brighter your chalk color will be! Then, transfer the mixture into a mold, such as an ice cube tray or a toilet paper roll.