Make a slow-drip watering system. Most plants like their roots to be damp, but not muddy. This experiment is perfect for observing how plants absorb the nutrients they need to thrive. Check out the rest of these 12 Gardener challenges.
Charlie and his friends are going outside to investigate some awesome sports stuff! In this episode they figure out the secret to throwing a curveball, a crazy swooping baseball pitch. Turns out it’s all about physics! Spin the ball the right way and boom, you have a major league caliber pitch … it’s that easy.
In this episode, Charlie teaches us how we can take a lousy topic like mowing a lawn, and turn it into a spectacular art form. Don’t have a lawn mower? A board, some string, and a hose will get the job done too! We also get to see Charlie and his friends play probably the biggest game of tic-tac-toe ever. It’s enormous.