The silverback gorilla is a special animal. This magnificent male is part of an endangered species. Complete this sheet to learn all about this gentle giant.

The animal names on this third grade science and spelling worksheet are all mixed up! Kids unscramble reptile and bird names to complete the worksheet.

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.

All kids love animals, but how much does your child know about them? Kids will get to learn some animal vocabulary with this wild crossword puzzle.

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.

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!

Here is a fresh and fruity way to learn a bit of life science. Sit down with your little one and teach them all the different parts of an apple!

Here's a great worksheet for teaching your kids all about the planet Mercury. Did you know that it's the smallest planet in our solar system?

Mammals come in all shapes and sizes - as big as a human or as small as a mouse! Learn about the life cycle of a mouse with this cut and paste activity.

Just like all plants and animals, you go through different stages in life too! Help your child to see how he will change and grow throughout his life.

Ever lay on your back to look at the clouds? Now you'll know which types of cloud make up all those silly shapes you see with this diagram.

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.

Teach your little scientist the difference between physical and chemical changes, on a molecular level.

During the Gold Rush, people weren't sure if they found gold or something else, and these easy steps would help them be sure.

Did you know that sound is actually caused by movement? Vibrations of particles create the sound that we hear.

Test your kindergartener's produce proficiency by challenging her to separate the fruit and veggies from other foods on this worksheet.

Grab your trusty flashlight and get ready for a scientific treasure hunt!

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.

Explore one of the great mysteries of the universe with this space science worksheet on black holes.

The holiday season is here! Bring this cool snowman to life by coloring him according to the color chart.

This cool physics worksheet helps kids learn how centripetal force and centrifugal force can explain why short track speed skaters don't fall over during turns.

Did you know that each tree tells a story? In this worksheet, children peer inside a tree to learn about the layers in its trunk.

Explore the lush plant life of the tropical rainforest in this second- and third-grade worksheet!

Dip your toes into a marsh habitat in this second- and third-grade worksheet!

Help your preschooler sharpen their knowledge about plants with this colorful worksheet. They'll use the word bank to name the basic parts of a plant.

This worksheet will give your child practice with their observation and reasoning skills, by challenging them to match the beetle with the correct spots.

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.

Learn about the plants and animals that make deciduous forests their home, then complete the crossword puzzle.

Color in this diagram to see how a tree works and to better understand how many plants transport their "food".

What is Pluto? According to scientists... no, not quite. Find out more behind the answer to that age-old question.