What to do:
- Use sidewalk chalk or make your own chalk to have large, easy to hold pieces.
- Mix together 2 tablespoons of powdered tempera paint, ½ cup of water and 3 tablespoons of plaster of Paris. Pour the mixture into a small paper cup and let harden. After an hour or so, peel off the cup.
For a homemade chalkboard, spray several coats of special chalkboard
paint (sold at hobby or paint stores) on a piece of cardboard. When dry,
border the edges with colorful cloth tape.