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

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!

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

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.

Teach your child how we measure temperature with these printable thermometers!

Help your little learner understand the concept of buoyancy with this fun worksheet. He'll decide which items will keep this frog afloat!

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

Engage your little scientist with a fun word search, all about sinking and floating! He'll be learning a basic concept of physical science.

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

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

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

When we push or pull an object, we exert force on it. Get your child thinking about force by challenging him to describe how each person is exerting force.

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

Learn about the similarities and differences between objects in this colorful science worksheet!

Here is a brief introduction to The Great Pacific Garbage Patch for kids!

Kids practice identifying solids for a lesson on the states of matter in this 1st grade physical science worksheet.

Kids write down examples of solids, liquids, and gases in this 1st grade physical science worksheet that focuses on the states of matter.

Kids practice identifying liquids for a lesson on the states of matter in this 1st grade physical science worksheet.

Kids draw examples of solids, liquids, and gases in this 1st grade physical science worksheet that focuses on the states of matter.

Children hone their powers of observation using this worksheet template.

This science vocabulary activity is packed with basic science vocabulary words to help the youngest kids warm up to scientific concepts.

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