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.

Help your child read this page about the Sumatran rhinoceros, where they can color an illustration as they learn about why this animal is endangered.

If your child is starting to learn human biology, give him a great study sheet with this anatomy worksheet about the pancreas.

How long does a butterfly live? Find out with this worksheet! Give your second grader a fun way to practice making graphs using given information.

Your child has probably tried a potato, but does he know the process it goes through to make it to the table? Find out with this life science worksheet.

Get the facts on the beautiful elk, an American treasure and a symbol of Yellowstone National Park.

How much do you know about man's best friend? This fun worksheet is jam-packed with fun facts about dogs!

Coyotes' famous howl gave them the nickname "song dogs." This is just one of several coyote facts your child can learn from this worksheet.

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

Don't believe a bird could catch a rattlesnake? Believe it. The greater roadrunner lives up to its name by running up to 20 miles per hour and hunting snakes.

Give your child a great coloring page full of fun flower facts! This one is about the iris flower and the butterfly.

Does your second grader love farm animals? This easy writing exercise will help your child be more observant about tracks left by some familiar animals.

Discover the many different kinds of conifer and deciduous trees as you complete this word search!

The Goliath birdeater is a spider that lives in South America. Your child will read a paragraph about spider before writing an opinion sentence.

The California condor has been brought back from the brink of extinction. This worksheet will help your little bird lover learn all about the condor.

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

Read about a little-talked-about bird that inhabits the wetlands of Yellowstone National Park, the sandhill crane.

This coloring page features a puffed up, spiky blowfish.

This worksheet helps kids understand variations in animals and how the same kind, or species, can sometimes look different from each other.

Check out this Awesome Anatomy page about your voice.

You have a lot in common with all the other humans on this planet. You all have noses and arms and fingernails, but what makes you different?

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

Mmmm honey is delicious, but do you know how it's made? Take a dip into some sweet knowledge and find out the buzzy secrets behind honey.

Learn about Red River Hogs in this series of animals facts sheets and coloring pages in one.

Read about the intestines, an important part of our digestive process. Your child will see a diagram of this body organ and learn important terms and concepts.

Filling out this spider diagram will be much less scary than running into these creepy crawlers in real life. Fill in the body parts from the work bank.

Did you know that one of the main ingredients of a perfect pearl is dust? Learn all about the bizarre process behind every pearl with this science worksheet.

All the animals in this word search share one characteristic: none of them have bones! Can your child find the boneless critters hidden in the puzzle?

How can you tell how old a tree is? Look no further! This worksheet gives a basic overview of tree rings for your little scientist.

This Lily and Dragonfly coloring page will engage second graders in a fun coloring exercise while helping them learn the scientific names of the species.