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!

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.

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

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.

Design a helmet from household objects in this engaging first- and second-grade activity!