Have you considered why elephants have trunks, or why polar bears have thick fur? Reflect on animal adaptations with this fourth-grade worksheet!

Introduce your flashlight to mirrors. Mirrors are cool surfaces that reflect light just as well as they reflect your face.

Introduce your child to a fascinating new animal, the Baird's tapir. This is just one of many endangered species around the world.

Where'd that shadow come from? Next time a scary shadow crosses your path, you'll know just what to look for.

Who knew that the machines of the world are all made of just 6 simple machines working together? Introduce your child to simple machines with this worksheet.

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Encourage your child to take a nature walk, using the prompts on this worksheet to write and draw their observations of plants, animals, sounds, and more.

A handy worksheet that breaks down the properties of metal. A good physical science review sheet to keep around for reference.

Learn about pearls, which seem like normal jewelry from a factory but are actually made from the mucus of mollusks!