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

Help your student become aware of everyday energy use with this fill-in-the-blank worksheet.

Increase your child's vocabulary and knowledge of the scientific world around him with a single sheet!

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!

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

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

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

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

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

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

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

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

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!