Two things: You can paint your sidewalks (with easy cleanup) and make your sidewalk art erupt!
First off, let's put together our sidewalk "chalk". This part is really cool, you get to do a science experiment just to make it!
Find the details on making the chalk here. (the vinegar comes later)
When you have it all mixed together, go out side and create your newest sidewalk masterpiece until all your squirty chalk is gone!
Then comes the good part: fill a few squirt bottles with vinegar, then spray it all over your art and watch it bubble over like a mad scientist's beaker!
It's a great way to get creative on Keys for Kids Radio's Summer of Fun!