Try This! Hula Hoop Observation

How representative is a hoop-size sample of an ecosystem? You may question this observation, but it’s what scientists have to do all the time— whether they’re sampling the deep ocean, bringing back moon rocks, or looking at blood through a microscope. Choose a spot for your hoop that seems to have a lot happening inside, but be aware that there may be even more (or less!) happening at other places in the ecosystem. You can observe what’s in your hoop just once, or repeat at different times of the day— or year. Take notes and photograph or sketch what passes through.

National Parks Guide USA

Learn about the Nat Geo Kids National Parks Guide U.S.A. Get downloads and a sneak peek of the book.

WHY? Book

Ever wonder WHY zebras have stripes? WHY you have 10 fingers? WHY rainbows form? WHY we speak different languages? If you’ve got questions, we’ve got answers! 1,111 of them, in fact, including WHY you ask "WHY?"!