Invite spellers on an inter-stellar adventure with this fun word scramble puzzle.

This Earth Day quiz family and friends with this true or false questionnaire. It's all in good, informative, fun!

Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

Introduce your child to the inclined plane, one of the six simple machines that helps to make work easier for us!

Flex your mind muscles with a body science worksheet! Your child will learn the fundamentals of what makes up our muscles.

What happens to our food after we swallow it? Chomp on some body science with this diagram of the digestive system.

Your child will learn how electricity is made and used by drawing pictures of household products that use electricity to create light, heat, and motion.

Meet Michael Faraday, the inventor of the first electric motor. Without Faraday, who knows if we would even have working cars, airplanes or even clocks!

There's a lot happening beneath the waves, including the ocean food web. Take a closer look with this colorful printable.

Take a quick lesson in the otters that inhabit Yellowstone National Park and take an even quicker quiz.

Milky Way: candy bar or galaxy of 100 to 400 billion stars?

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

This nonfiction passage helps kids develop reading comprehension skills, as well as learn important ecological facts.

If your child loves animals, introduce her to a cool species of bird with this Northern Hawk Owl info sheet, complete with coloring and a crossword.

Learn the ins and outs of one of the body's most important organs: the heart!

Does your little scientist know the different types of energy? Explore energy with this helpful info sheet!

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

Budding paleontologists will refer to a word bank to identify 10 dinosaur-related vocabulary words in this playful word search puzzle.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!

Without light sources, we wouldn't have any light. Can you imagine a world without any light sources?

Take a plunge under the surface of the earth! With this worksheet as your guide, you may explore the geological processes of our planet.

Do you ever see shapes in the stars at night? In ancient times, people named these shapes, and now we know them today as constellations!

Practice naming the planets in our solar system with a fun, visual worksheet! Your child can see the planets in their orbits and try to label each one.

Children put their science vocabulary to the test with this engaging crossword puzzle!

Here's a fun way to review photosynthesis with your child! She'll show off her science knowledge as she answers questions to complete the crossword puzzle.

Test your child's science savvy with this worksheet, which asks your child to identify what items are made from plants.

Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

Peel back the layers of the earth in this earth science worksheet. Can you name all of them?

Learn to read a standard thermometer in both Fahrenheit and Celsius in this informative second- and third-grade worksheet! 

Do you know the functions of the primary organs in the human body? Put your knowledge to the test with this fourth- and fifth-grade crossword!