Find out all about the different parts of the eyes and how they work together to make vision possible.

Learn about how the Earth was formed in this science worksheet that covers the early years of the Earth.

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.

Rainbows look like swipes of brightly colored paint hanging in the sky. Have you ever wondered how they got there?

How many machines can you find around the house? You may find them where you least expect it!

Did you know plants make their own food? Discover how with this fill-in-the-blank worksheet for third and fourth graders!

How many teeth does an alligator have? Find out with this fun worksheet, dedicated to teaching you and your child all about alligators!

Lots of people like turtles, but how much do you really know about them? Get to know one of many types of turtles with this informational worksheet.

Glass is everywhere, but have you ever wondered where it all came from? It doesn't grow anywhere -- we have to make it!

Help kids understand the size and scope of billions of years with this helpful reference worksheet.

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!

Put your prediction proficiency to the test in this third-grade physical science worksheet!

Introduce your budding scientist to chemical reactions with this simple and fun science experiment!

Have you ever wondered why giraffes have long necks or why lions have sharp teeth? Find the answers in this third- and fourth-grade worksheet about adaptations!

Ever wonder why zebras have so many stripes? Find out with this fun worksheet all about the zebra!

Bird-watchers will love this worksheet, featuring just a sample of the many song birds flying around Yellowstone National Park.

Did you know fish could fly? Pisces, which is also a zodiac sign, is a constellation, named many years ago.

Many legends told by ancient people have characters that you can find as star formations called constellations! This one is Andromeda.

This is not your average coloring page. Using only the three primary colors, mix your paints together to form as many colors as possible.

Constellations are groups of stars that form a picture, usually with a story behind it. But many constellations are also zodiac signs, like Libra, the scales.

Dragonflies are some of the oddest looking insects in the world, so it's appropriate that they have so many unique characteristics. Read all about them!

Earth has many different land and water features—can you recognize them? Test your knowledge with this crossword puzzle for third and fourth graders!

There aren't many blue animals out there, but here's one that will be fun to color: the blue dart frog. Its bright color warns predators that it is poisonous.

How did salt ever get into the ocean? Find out how, and then try conducting your own salt water experiment.

How do the Sun and the Moon interact with the Earth, and how do all three depend on one another? Find out in this science worksheet.

Discover how plants survive in the desert with this third-grade habitat worksheet!

Learn how seeds move with this second- and third-grade matching activity!

What is wind energy? Teach your students how we can use the wind to create electricity!

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.