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!

What is geothermal energy? Find out how we use parts of the Earth to provide us with renewable energy!

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

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.

Can you explain why your blue shirt is blue? This worksheet is full of facts about light and how it reacts with objects to give us the perception of color.

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.

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

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

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

Get a lesson in sports and science with this engaging third- and fourth-grade worksheet!