Launch into learning with this worksheet on Gemini 4, one of the original missions in the early days of the U.S.'s space program.

Fossils have a lot to teach us about life on earth, but they can also be used to help teach kids the scientific method.

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

How does the butterfly become so beautiful? Learn about the four stages that it goes through in its life.

Here are four examples of mineral resources for kids to think about, plus a short explanation of what a mineral resource is.

Life on Earth is vast and varied, from high in the sky to the bottom of the sea. Learn more about what lives on Earth with this reading and quiz worksheet.

Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Discover the animals and plants of the past in this fossil-focused worksheet!

Learn how sand dunes form, and a little bit about desert formations like yardangs as well, in this science summary sheet.

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.

Is a feather liquid, soft, spotted, or heavy? Practice describing everyday objects, or matter, with this second-grade science worksheet!

This worksheet tests kids' understanding of basic heredity by asking them to match parent turtles with their offspring based on similar traits.

Learn to read a standard thermometer in both Fahrenheit and Celsius in this informative second- and third-grade worksheet! 

In this North American animal tracks worksheet, students hone their observation skills by matching tracks to animals.

Dig your hands into some earth science with this soil sheet! Your little scientist can hone his reading skills as he learns what soil is and how it is formed.

What do a key, a goldfish, and a tortoise shell have in common? Find out with this second-grade science worksheet!

Practice describing different objects and substances in this colorful worksheet!

How do clouds form? Why does it rain? Help your student answer some of these questions by completing this water cycle worksheet.

Why do some desert animals have large ears? Why do others have scales? Learn the answers to these questions and more with this life science worksheet!