Sidewalk paint is such a simple Summer pleasure. Cheap, easy, and fun, it really is one of those activities that last for hours. Once the kiddos start painting, they don't stop until the paint runs out. And the best part? It dries pretty much like sidewalk chalk, and simply washes away with water.
Simply take equal parts cornstarch and water, and mix them well with a whisk or fork. On this particular day we only had a half an hour or so to paint, so I mixed 1/4 cup cornstarch to 1/4 cup water in four separate containers. (Old yogurt containers and the like are great for this, too.) Then simply add a few drops of either food coloring or tempera paint and whisk again until your color is even.
Add a paintbrush or two you don't mind being used on cement, and you're ready to go!
(Keep in mind that on those really hot hot summer days, this activity is better for the morning before the pavement gets too hot. A driveway that could fry an egg will definitely bake your cornstarch mixture on making the painting a bit trickier.)
I love that after a session of painting outside, I find everything from stick figures to love notes to paintings that would make Jackson Pollock proud. You definitely have a greater variety to what you can accomplish than with sidewalk chalk.
So what are you waiting for? Grab your paintbrushes and go play outside! Enjoy!