What has two legs and carries its baby in a pouch? Fill in this crossword puzzle and learn some fun facts about two-legged creatures!

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 all about the science of the movies and the basic concepts behind how they work.

Did you know that your tongue is one of the strongest muscles in your body? Tickle your learning taste buds with this worksheet all about your tongue.

Put your kid's observational skills to the test with this word search that will help her learn some of the animals that inhabit a rainforest.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Searching for a worksheet to help your fourth grader with science? This printable will help him practice astronomy vocabulary.

Did you know that light could bounce? Set up a light obstacle course with a few mirrors and watch light bounce around your room.

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

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

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

Discover some fun facts about the sun — and bring it to life with color — with this astronomy worksheet!

Ready for a truly electrifying lesson in science? Find out how electricity forms and what makes a lightning bolt!

What's the difference between renewable and non-renewable energy? Help your student discover the various forms of energy we use each day.

Teach your kids all about the second planet from the Sun with this simple science sheet.

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

Where to flower babies come from? Use this word search to learn about the different pollinators in our environment, and how they help spread plant seeds.

Read about Yellowstone's red foxes, some of the most cunning and smart animals around.

Help your student become aware of everyday energy use with this fill-in-the-blank worksheet.

Wolves are an animal with a bit of rough past in Yellowstone National Park. Learn all about them!

Test your little nature-lover's knowledge about our feathery friends. Can she figure out which bird fits each description?

Learn all about light refraction by simply placing your pencil in a glass of water. Warning: your pencil may not be quiet the same afterward.

Without rain, we wouldn't have any puddles to splash and stomp in. Does your third grader know why and how rain falls from the clouds?

Think toads and frogs are the same? Think again! Check out this breakdown of the differences between the two, complete with a quiz to check your new knowledge.

Learners will get to know the bald eagle, the national bird of the United States and an inhabitant of Yellowstone National Park.

Learn about the great horned owl of Yellowstone National Park, a bird so big and mean that it has the nickname, "tiger owl."

Practice geology vocabulary with this challenging crossword puzzle.

Learn the difference between behavioral and physical adaptations with this cut-and-paste worksheet for second and third graders!

Challenge your child' memory skills with this colorful worksheet. This fun printable will help with memorization skills and spatial awareness.

Teach your child how to respect the ecosystem with a science worksheet that doubles as a coloring page. Can they identify the sources of pollution in the scene?