Crank out a better understanding of simple machines with this worksheet all about the wheel and axle!

Children will connect their understanding of gases to real-world items as they circle all of the pictures showing gases.

This tree anatomy worksheet will give your little naturalist a better understanding of the parts that make up a tree.

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

Has your child learned about the life cycle of a frog in school? Test his understanding with this cute cut and paste worksheet.

Help your child learn about the nervous system and the digestive system with this fun worksheet, which will challenge his knowledge of physiology.

Facts about ostrich include that they are the largest birds in the world and that they can't fly, but that's not all. Learn all about this amazing bird!

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

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

Is orange juice a solid or liquid? What about a cookie? Practice classifying everyday objects in this first- and second-grade states of matter worksheet!

Search for natural resources at the beach in this engaging worksheet for second and third graders!

Try to find natural resources in this camping-themed worksheet for second and third graders!

Look for natural resources around a farm in this engaging worksheet for second and third graders!

Did you know the surface of the Earth is always changing? Learn about the events that change Earth's surface with this crossword puzzle for second and third graders!

Are chickens mammals, fish, or birds? Sort animals by their traits in this informative life science worksheet!

Detect animal defenses in this hands-on worksheet for kindergarteners through second graders!

Can melted wax turn back into solid wax? Can scrambled eggs turn back into raw eggs? Learn the answers to these questions and more with this second-grade worksheet about reversible and irreversible changes!

Explore how Earth’s surface can change in this investigative second-grade worksheet!

Get to know the basic parts of a plant with this first- and second-grade life science worksheet!

Step into the swamp ecosystem with this engaging life science worksheet!

Match each animal to its home in this first- and second-grade life science worksheet!

Become a disaster detective in this fun science worksheet!

Become a genetic detective with this inquisitive life-science worksheet!