How do nonliving things help plants and animals stay alive? Find out in this first-grade worksheet!

Investigate the mystery of why two tomato plants developed so differently!

Discover why humans change the world around us in this friendly kindergarten worksheet!

Find out how animals and plants change based on their environment in this worksheet!

What makes a frog living and a robot nonliving? Use observable traits to distinguish between living and nonliving things!

Discover how dolphins use sound to see in this fascinating worksheet!