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.

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.

Help your child learn about facts and opinions in this animal-themed worksheet! Students will read sentences and decide whether they express facts or opinions.

The horned lizard has a scary exterior but a gentle personality. Your little student can learn about this North American lizard with this worksheet.

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.

Find out how scientists explain our yawns and use the graph to keep track of your family's yawns for a whole day!

Learn about a famous woman of science, Rosalind Franklin, and how she contributed to the discovery of DNA's double-helix structure.

The rainforest is a vibrant, lush place teaming with life! Have your little environmentalist think of some ways to help the rainforest.

All living things go through many changes as they grow to be adults! Help your little one understand how he will grow and change.

Hiccups interrupt us when we're talking and sometimes even get in the way of eating! Find out why we hiccup and discover some unusual ways to get rid of them.

Both of these animals have big ears! Your child will look at the pictures of unusual animals in this worksheet and try to learn some new things about them.

The narwhal is one unusual animal! Your child will learn about this horned sea creature through text and pictures.

Get in tune with nature, and read a bit about an endangered species of animal, the Black-footed Ferret. Your child can color an illustration as he reads.

Ever wonder what makes the leaves change colors in the fall? Find out with this fascinating life science worksheet.

Help your child understand why it's so important to take care of the environment with this info-sheet about an endangered species: the spectacled bear.

The olm is a blind salamander that lives in Europe. Kids will learn how pictures help illustrate concepts with this life science worksheet.

Help your child understand pollination with this informative worksheet, complete with a diagram.

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.

Do you need a job? Well, this elephant is looking for a new symbiotic partner, and you could be just the candidate he's looking for!

Practice identifying living and nonliving things with this first- and second-grade science worksheet!

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!