It may seem like a simple piece of chalk, but it is the beginning of a million activities taking place every day on playrooms, sidewalks and playgrounds. It unleashes hopscotch. Foursquare. Tic-tac-toe. It is the brush that paints portraits, landscapes and still lifes. It is hangman and mazes and puzzles. It’s all of these things without batteries or screen. As luck would have it, making sidewalk chalk at home is surprisingly simple and makes a pretty good rainy day activity all its own (with adult supervision).
To color chalk, add about 2 tablespoons of tempera paint to the bag. Tempera paint is a non-toxic washable paint often used for finger painting. Use as much or as little as you’d like for creating pastels or richer colors, but more paint in the mix will result in weaker chalk.
Seal the bag and squeeze and roll by hand until a thick, evenly-colored paste forms.