When you think backyard, you think playing, relaxing and grilling, right? But this summer, think “testing hypotheses” too. We couldn’t think of a better area than your spacious, self-cleaning (thanks, rain!) yard to set up experiments all summer long. Flip through to find one to try!

Wingardium Leviosa

The (air) pressure’s on in this magical experiment that lets your Little levitate water over an unsuspecting friend’s… or better yet, a deserving sibling’s head. To try it at home, follow these easy instructions from Steve Spangler Science, and keep a towel at the ready…just to be on the safe side!

photo: Allison Sutcliffe

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Which one of these experiments looks fun to you? Leave your pick in a comment below. 

—Allison Sutcliffe