Why do some objects make loud sounds when dropped, while others make quiet sounds?

Pull the lever on learning! Get to know one of the six simple machines with this worksheet about the lever.

Introduce your child to the inclined plane, one of the six simple machines that helps to make work easier for us!

Did you know that the screw is actually one of the six simple machines? This handy machine helps to make work easier!

Did you know that an elevator is actually one of the six simple machines? Help your child understand how the pulley works.

Young inventors will have a blast with this worksheet on compound machines! Use three of the six machines together to make work easier.

I spy with my little eye... six simple machines! Here's a fun way to help your child review the simple machines.

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.

This lizard can grow to over six feet long! Color the Golden Spotted Monitor Lizard, one of several brand new species discovered between 2009 and 2011.

Wedge your way into physics fun! You and your child can learn a bit about one of the six simple machines with this worksheet all about the wedge.

Back in ancient times, before people knew what the stars were, they told stories about them! With this worksheet, learn about the constellation Cygnus.

Do you ever see shapes in the stars at night? In ancient times, people named these shapes, and now we know them today as constellations!

Back in ancient times, the stars were used as storytelling tools. People created characters and stories that they saw in the stars, like Leo the lion.

Your child has probably tried a potato, but does he know the process it goes through to make it to the table? Find out with this life science worksheet.

Did you know you're 1,000 times more likely to drown than you are to be bitten by a shark? This fun worksheet is jam-packed with fun facts about the shark!

Teach your child all about the growth cycle of carrots, those bright orange veggies found on dinner tables everywhere.

Challenge your child's knowledge of astronomy with this space-themed worksheet, which focuses on the timing of cosmic events.

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

Collecting data is an important part of math and statistics. Practice gathering data using items around the house or classroom!

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.

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!

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!

Learn how seeds move with this second- and third-grade matching activity!

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

Discover how seeds move to new places with this cut-and-paste worksheet for second and third graders!

Some people think alligators and crocodiles are the same, but there are some distinct differences. Check out this cool worksheet to learn what they are.

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

Become a disaster detective in this fun science worksheet!