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

Kids find grassland animals in this third grade science word search. Animal habitat worksheets help students learn about life forms in different environments.

What is water energy? Also known as hydro power, water energy is one of our important renewable resources!

Looking for a fun way to supplement your child's science learning? Try out a life science crossword puzzle! This one's all about ecosystems.

This worksheet features Mercury, the smallest planet in our Solar System, and also the planet that's closest to the Sun.

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

Don't let your kid bark up the wrong tree! Engage him in a word search filled with tree terms, boosting his attention to detail and problem solving skills.

Here's a great way to teach your kids more about our solar system. This worksheet focuses on the dwarf planet, Pluto.

Children discover and review the parts of a flower and what they do as they complete this botany-themed crossword puzzle.

Budding inventors can get a fun review of the simple machines with this word search.

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

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

Did you know that Uranus can get as cold as -144° Fahrenheit? Learn more about the third largest planet in our solar system on this planet printable.

Ever lay on your back to watch the clouds? With this cloud chart you and your little scientist can identify the different types of cloud formations.

This colorful diagram is a handy reference guide for kids learning basic body systems.

Does your child know where Earth is in the Solar System? He'll learn as he completes this fun, planet printable.

Young astronomers unscramble words to reveal the heavens in this fun space science worksheet.

Space enthusiasts will love learning about Freedom 7, the first manned American space mission.

Did you know that an elevator is actually one of the six simple machines? Help your child understand how the pulley works.

There are lots of stories around the world for the rabbit moon: a rabbit image seen in the shadows on the moon's face. Here's one for young moon-gazers!

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

Does your learner ever wonder what makes the Earth dark at night and bright during the day?

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

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.

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.

Give your kid help with his science skills with this worksheet, which practices natural disaster vocabulary.

Increase your child's vocabulary and knowledge of the scientific world around him with a single sheet!

Have you ever looked into the night sky and wondered where all those millions and million of stars come from? Find out here with a mini astronomy lesson!

Take a peek inside the human eye with this eye-catching worksheet! See a simple eye diagram and learn vocabulary words that will help your kid understand sight.