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

Find out all about the different parts of the eyes and how they work together to make vision possible.

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

Make a splash with this hands-on first, second, and third grade science worksheet about sound and underwater vibrations!

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.

Glass is everywhere, but have you ever wondered where it all came from? It doesn't grow anywhere -- we have to make it!

Light can do amazing things, but nothing else brings out its crazy capabilities like the prism. Learn about the dazzling prism and make one of your own.

Have you ever wondered why manhole covers are round? It's a good thing to know -- big companies sometimes ask that question in interviews.

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

Need a colorful way to impress your friends and family? This worksheet has got you covered!

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

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

Use your detective skills to predict the motion of a seesaw in this third-grade worksheet!

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

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