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This year, we designed and tested a whopping 22 hands-on STEM activities! Here’s a roundup of the five most popular to keep you busy all summer.

Have you ever wondered how water striders can walk on water? Wonder no longer!

The warm weather is perfect for a cool meal! Ceviche (suh-VEE-chay) is a popular dish from Central and South America that relies on lime juice to “cook” seafood without any heat.

Training artificial intelligence (AI) can be as easy as 1, 2, 3! Teach an AI program or “model” to pull off a very simple card trick… and learn from its mistakes.

Space is huge. But exactly how huge are the spaces between the Sun, Moon and planets? Find out by making a scale model of the inner solar system at your nearby park!

All it takes is a little elastic to send a pom pom flying! Can you improve your aim with a bit of practice?

Why do apple slices go brown? In this experiment, test out the anti-browning abilities of common liquids. And discover the surprising biology of browning!

Here’s a surprising pair of dice that you can make yourself! Take on this experiment to test whether different dice modifications change your chances.

Water in a cup sloshes around if you don’t move it carefully. What about fire? Let’s find out!

Cells are the basic building blocks of life. In this activity, take a tasty tour of the cell components that make cells tick!