Glass is everywhere, but have you ever wondered where it all came from? It doesn't grow anywhere -- we have to make it!

Never heard of the planet Pirjute? That's because it's Jupiter, with mixed-up letters! Kids unscramble planet names on this third grade science worksheet.

Without light sources, we wouldn't have any light. Can you imagine a world without any light sources?

Introduce your flashlight to mirrors. Mirrors are cool surfaces that reflect light just as well as they reflect your face.

Without reflective surfaces, this biker would have a much more dangerous ride. Can you find all five reflective surfaces present in this scene?

Did you know that light could bounce? Set up a light obstacle course with a few mirrors and watch light bounce around your room.

Find out all about the different parts of the eyes and how they work together to make vision possible.

Grab your trusty flashlight and get ready for a scientific treasure hunt!

Learn all about light refraction by simply placing your pencil in a glass of water. Warning: your pencil may not be quiet the same afterward.

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.

Have you ever wondered why water in a drinking glass looks clear while water in the ocean looks blue? Find out why with this fun worksheet!

Find out the the cool science behind ice cubes with this fun worksheet.

Have you ever wondered why manhole covers are round? It's a good thing to know -- big companies sometimes ask that question in interviews.

Does your little scientist know the different types of energy? Explore energy with this helpful info sheet!

Educate your budding scientist about fossil fuels with this worksheet about non-renewable energy.

Teach your child the difference between potential and kinetic energy with this introductory worksheet.

Renewable energy is extremely important for the Earth's future! Test your child's knowledge of renewable resources with this review sheet.

What's the difference between renewable and non-renewable energy? Help your student discover the various forms of energy we use each day.

What is wind energy? Teach your students how we can use the wind to create electricity!

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

What is solar energy? Discover how we use the power of the sun, and complete this worksheet about an important renewable energy source.

What is water energy? Also known as hydro power, water energy is one of our important renewable resources!