Meet the master of compound machines: Rube Goldberg! His wacky contraptions put a whole new spin on the use of simple machines.

Children get a mini lesson in writing and the weather with this coloring worksheet.

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

To understand electricity, you have to get down to the basics. Explore the literally microscopic world of electrons to get a grasp on electricity.

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

With two simple yet fun experiments, this worksheet covers the interesting topic of cohesion and adhesion of water.

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

Who knew coloring could be so educational? Learn the formal names of a spider and calla lily with this coloring page.

This worksheet featuring food and natural resources touches on the subject of food chains.

The earth is always changing and moving.Learn all about weathering and erosion with this worksheet.

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

Looking for a quick reference about gravity and a definition for kids? This two page worksheet and activity has you covered!

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

Get your kindergartener started on geography with a fun drawing activity! She'll learn a little about the anatomy of mountains as she draws.

Introduce children to physicist Albert Einstein — and a bit of theoretical physics — with this mini biography.

Does your second grader love farm animals? This easy writing exercise will help your child be more observant about tracks left by some familiar animals.

Looking for a worksheet to challenge your child's knowledge of science? This printable asks him to identify a solid, liquid and gas.

Learn all about your body's most important muscle: your heart! This simple diagram is a great way to introduce your little biologist to his heart.

Plant a paper flower garden with this fun sorting activity! Children color the flowers, then cut them out and sort them by type.

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

Looking for a fun way to supplement your child's science learning? Try out a life science crossword puzzle! This one's all about ecosystems.

These STEM design challenge cards ask learners to build something new for a specific reason or purpose and are a great way to foster creative thinking.

Introduce students to the fourth step of the engineering design process with this helpful template!

Learning about the functions of plant parts doesn’t have to be puzzling! Review the parts of a plant with this crossword for first and second graders.

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

Learn about the habitat of an axolotl in this hands-on kindergarten life science worksheet!

Dress for the weather with this fun cut-and-paste worksheet for early learners!

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

Who knew that the machines of the world are all made of just 6 simple machines working together? Introduce your child to simple machines with this worksheet.

Children will enjoy this appealing worksheet that invites them to consider which of the items shown are necessary to plant life.