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.

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.

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.

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

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.

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

Introduce your budding scientist to chemical reactions with this simple and fun science experiment!

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

Children label the eight planets of our Solar System in this simple astronomy worksheet.

Teach your kids all about the second planet from the Sun with this simple science sheet.

Learners will discover a simple overview of the human muscle system in this introductory worksheet.

Your nature lover can learn the basics of drawing a tree with this simple step-by-step guide.

Kids follow corn as it grows from seed to vegetable on this simple cut-and-paste growth chart.

Through a simple matching activity, kids learn how their actions can have a direct effect on the environment.

Teach your child about the layout of the Solar System with this simple worksheet, featuring the planet Neptune.

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

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

An energy pyramid is a simple way to graphically show how energy flows in an ecological community; somewhat similar to the food pyramid.

Learn about the many different biomes the Earth is home to in this life science worksheet, which holds the answers to some simple life science questions.

Start from water cycle precipitation from clouds and match parts of the cycle to this clear colorful image of a simple water cycle, using the helpful paragraph.

Take a peek inside the human eye with this eye-catching worksheet! See a simple eye diagram and learn vocabulary words that will help your kid understand sight.

Learn all about your body's most important muscle: your heart! This simple diagram is a great way to introduce your little biologist to his heart.

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

Is your fourth grader learning about electricity? This worksheet is all about circuits, tests her skills and reinforces the concept of how a circuit works!

You can find rocks almost anywhere, but there's a lot more to rocks than meets the eye. Check out this science worksheet to learn all about rock formations.

Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

It's never too early to start teaching your kid about eating right and staying active.

Experiment with renewable energy from the comfort of home by creating a pizza box solar oven!