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

From glaciers to mountains to wetlands, our planet has lots of different landforms. Help your child learn all about them with this fun earth science crossword.

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

We all know the famous equation E = MC^2. But what does it mean? Learn a bit more about Einstein's famous energy equation with this physical science worksheet.

How far away is the Red Planet from the sun? Find out with this great Solar System printable.

Help your child practice his science skills with this science worksheet, which will challenge his knowledge of reptiles and ask him to solve a puzzle!

Nature is all around us! But how much does your child know about our natural world? Test her knowledge with some nature fun-facts trivia.

Learn about the grizzly bears that live in Yellowstone National Park.

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?

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

This bright and colorful worksheet helps your child bring the technical terms of the bones in his legs down to size.

Use this lightning diagram to go along with what your child is learning about weather systems in school!

How well does your child know the layout of our Solar System? This worksheet focuses on the biggest planet, Jupiter.

Introduce students to the fourth step of the engineering design process with this helpful template!

Learn about the California tiger salamander, which uses its toxic, bad smell as a defense.

Here's a quick overview of drought and flooding to spark thoughts or conversation with your kids about water.

The infamous Halley's Comet only comes around once every 75 years or so! Read some interesting info on the world's most famous comet.

Encourage your little environmentalist to learn about composting! Children will boost their reading skills as they learn what compost is and how it helps the environment.

Find out more about single-cell organisms with this coloring page and diagram.

This Awesome Anatomy sheet focuses on the brain, often considered the most vital of vital organs.

Use this cool 2-page worksheet to make your own big dipper clock!

Cranium, noodle, melon, noggin...the human skull has been called a lot of things over the years. Here are the proper names for each part.

When we get embarrassed or anxious, and all of a sudden our cheeks get red! Why does our body do this? Find out what scientists think blushing is all about.

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.

This word search introduces your child to important rocks and minerals vocabulary, as it strengthens his attention to detail.

Help your child get to know the most elementary of the elements with these handy worksheets.

Kids love squids! This simple squid diagram will help your 5th grader memorize the squid anatomy.

Grandma and grandpa didn't always have gray hair. Find out about what gives our hair color and what makes our hair lose that color as we get older.

Let your kid's knowledge of leaf vocabulary climb as high as a tall, tall tree with this fun word search.

Pull the lever on learning! Get to know one of the six simple machines with this worksheet about the lever.