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

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

Help your child get to know the most elementary of the elements with these handy worksheets.

Help your child learn about one of the most elementary elements, gold.

Learn all about the science of the movies and the basic concepts behind how they work.

This science worksheet tells all about James Watt, the man that powered the Industrial Revolution.

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

It's a bird! It's a plane! It's Physics Man! Test your knowledge of the physical world with this fun questionnaire that takes physics to a super-heroic level.

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

Searching for a way to help you kid practice their geography knowledge? This printable is a great way to learn the countries in North America.

Searching for help with you kid's geography skills? This printable worksheet will teach them the continent of South America.

Read about Alexander Graham Bell, the man who made it possible for us to stay connected all day long, in this biography that comes with a science experiment.

This is not your average coloring page. Using only the three primary colors, mix your paints together to form as many colors as possible.

Alfred Nobel, though he held over 300 patents in his lifetime, is most famous for inventing dynamite.

Children learn why the light from the sun seems white to us, why we see objects in color, and why the sky is blue in this beautiful and fascinating worksheet.

We all know the famous equation E = MC^2. But what does it mean? Learn a bit more about Einstein's famous energy equation with this physical science worksheet.

This experiment requires only lemon juice, salt, sugar and grapefruit. Your budding scientist can get a great introduction to science by testing her own tongue!

Have your little chemist think about the properties, or characteristics, of metals. What makes them different than non-metals?

Fly high with The Wright Brothers, two siblings who soared to the forefront of history with their design for the first modern airplane.

Sink or float? Your kid may be surprised to learn that the density of coke and diet coke aren't the same!

Help your child get to know his elementary elements with this handy worksheet on copper.