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Meet the master of compound machines: Rube Goldberg! His wacky contraptions put a whole new spin on the use of simple machines.

Explore the life cycle of a pumpkin with your kids with this colorful cut and paste growth chart.

Explore grasslands and their fauna in this thought-provoking worksheet!

Deserts might seem inhospitable to life, but there are actually plenty of animals that can live there!

Dive into a coral reef ecosystem with this life science worksheet!