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.

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

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.

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

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

Budding inventors can get a fun review of the simple machines with this word search.

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

How many machines can you find around the house? You may find them where you least expect it!

Review the rock cycle with this second-, third-, and fourth-grade crossword puzzle!

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

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

Learn some new words and facts about precious minerals with this word-scramble and matching worksheet.

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

Is air a natural resource? You bet! Air as a resource carries oxygen, which we need. Read and write about ways air quality can be affected.

Learn to read a standard thermometer in both Fahrenheit and Celsius in this informative second- and third-grade worksheet! 

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

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