I got this great idea from FamilyFun magazine! A Sidewalk Chalk Sundial teaches kids how to keep time the way ancient civilizations used to do! You'll need to do this on a bright sunny day for best results. Grab your sidewalk chalk and get ready to be amazed at how much your child's shadow changes throughout the day. The Lesson: Your child is learning the same principles that ancient Egyptians and Babylonians used to create early sundials. ...
