Cause and effect is so fascinating. This repetition may seem simple, but the kids are getting a lot out of rolling the balls and other objects over and over again in different circumstances—-different surfaces, different angles, and with different ingredients (such as sand, water, etc.) involved. Many other elements also come into play—how can we share? What if items roll away and we can’t find them? How can we support ramps and make them sturdy enough to work? How much weight can they hold? What other kinds of things do these rolling objects remind us of, and how can they be incorporated into dramatic play?