This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Help your first grader design and create his very own bird feeder out of an empty milk carton.

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!