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!

Hole-y Cow

Before you start this experiment, have your scientific sidekick predict what will happen when she starts pushing pencils through a water-filled bag. She’ll have the chance to (literally) poke holes in her own theory once she gives it a try, thanks to the polymer chains that keep the plastic from leaking. Get the important details to set up and run this one at Steve Spangler Science.

Shelley Massey

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

—Allison Sutcliffe