How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

Learn some new words and facts about precious minerals with this word-scramble and matching worksheet.

How fast does sound travel? Help your child figure out the physics of sound waves with this informative worksheet.

Microscopes bring biology to life, allowing us to explore the world's tiniest living things. Have your child create his own organism in the sample slide.

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

Next time you head outside for a hike or a camping trip, bring along this checklist of animal tracks!

Kids will learn about fossils in this worksheet. Help your child learn about the scientific method by getting him to examine a fossilized dinosaur skeleton.

Before trees grow into trees, they start out as little seeds. Can your child match the fruit and seeds with the trees (or plants) they came from?

Kids need lots of things to grow up healthy and strong, and plants do, too! Can your child think of things a plant needs to grow?

Hop this way for some marsupial madness! Your child can learn about the life cycle of a kangaroo, and how marsupials differ from mammals.

This Awesome Anatomy coloring page shows how blood circulates through your body.

It's a paper parachute brigade! Learn how to build your own parachute, and learn how the parachute was invented over 500 years ago.

How much do you know about our solar system's planets? Kids learn facts about Neptune in an out-of-this-world worksheet.

The rainforest is a vibrant, lush place teaming with life! Your little nature explorer can take an expedition to find the many hidden animals in this scene.

Dreams can be delightful or downright terrifying. Discover the science behind dreams and try to figure out what your dreams say about you.

Find a definition of what "natural resources" are, and complete the natural resources word search. It's a good vocabulary warm-up!

It's a bird! It's a plane! It's Physics Man! Test your knowledge of the physical world with this fun questionnaire that takes physics to a super-heroic level.

Learn about the animal practice of hibernation in this quick science worksheet.

Help your child learn about facts and opinions. Kids will read statements about animals before determining whether each statement is a fact or opinion.

Ancient mariners mistook the manatee for a mermaid! Your young biologist won't make the same mistake after learning about the manatee 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.

Test your third grader's biology knowledge with this worksheet, which challenges him to separate invertebrates from animals with a backbone.

In this introductory tree-diagramming worksheet, young naturalists will unscramble each label to reveal five parts of the tree.

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

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

Just like the rest of our body, our eyes are a complicated system! Learn about how the human eye works with this anatomy sheet.

Playing in the dirt was never so educational! Shake things up with this fun experiment about soil.

Get to know your Jurassic from your Cretaceous in this handy geologic time periods chart.

Crank out a better understanding of simple machines with this worksheet all about the wheel and axle!

Learn more about molecules and how they comprise the air all around us in this intro-to-earth-science worksheet.