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

Mix, boil, and toast your way to understanding energy transformations with this fourth-grade worksheet!

Review energy terminology with this fun fourth-grade crossword puzzle!

Apply concepts of energy and motion to marbles in this fourth-grade worksheet!

Test your knowledge of electrical energy with this third- and fourth-grade worksheet!

Discover different types of energy with this third- and fourth-grade science worksheet!

Determine which magnets have the strongest force in this third- and fourth-grade worksheet!

Get a lesson in sports and science with this engaging third- and fourth-grade worksheet!

Consider the factors that affect magnetic forces in this informative third- and fourth-grade worksheet!

Match forms of energy to common examples in this third- and fourth-grade science worksheet!

Connect forms of energy to real-life scenarios in this third- and fourth-grade worksheet!

Explore the applications of electrical energy with this helpful second-grade worksheet!

Take a science-filled trip to an amusement park in this third- and fourth-grade worksheet!

Students flex their physical science knowledge by classifying items as solids or liquids in this fourth grade states of matter worksheet.

Get charged up about static electricity with this informative fourth- and fifth-grade worksheet!

Learn how energy changes forms with this fourth- and fifth-grade physical science worksheet!

Students practice classifying items as liquids or solids for a lesson on the states of matter in this fourth grade physical science worksheet.

Learn how conductors and insulators affect the flow of electricity in this helpful fourth- and fifth-grade worksheet!

Learn about some of the most common forms of energy with this helpful one-pager for third graders!

Explore magnetism with this colorful science worksheet for third and fourth graders!

Explore the strength of magnetic forces with this worksheet for third and fourth graders!

Review the terminology of collisions with this engaging crossword puzzle for fourth graders!

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!

Dive into the principles of energy transfer with this energetic physical science worksheet!

A handy worksheet that breaks down the properties of metal. A good physical science review sheet to keep around for reference.

Change up your regular classwork with this hands-on science worksheet!

Learn all about the science of the movies and the basic concepts behind how they work.

Where'd that shadow come from? Next time a scary shadow crosses your path, you'll know just what to look for.

This worksheet will quiz your child on the different fields of study in science. What's the difference between a zoologist and a geologist? Find out here!

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.