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Fossils can tell us about life on earth, but they can also teach kids the scientific method.

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

Learn more about molecules and how they comprise the air all around us in this intro-to-earth-science worksheet.

Plants need to breathe and eat food (energy) just like us! Help your budding naturalist to learn about photosynthesis.

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

Ever wonder why sounds change as they move away from us? Learn all about the Doppler effect with this physics worksheet.

Fossils have a lot to teach us about life on earth, but they can also be used to help teach kids the scientific method.

What does a plant need to grow? Just like us, plants need food, water and air! Help your child understand more about plant life.

Microscopes bring biology to life, allowing us to explore the world's tiniest living things. Have your child create his own organism in the sample slide.

Are cats trying to talk to us when they purr? Discover the meaning behind the purr in this worksheet that explores the three main types of cat purrs.

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.

Nature is all around us! But how much does your child know about our natural world? Test her knowledge with some nature fun-facts trivia.

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.

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.

Hiccups interrupt us when we're talking and sometimes even get in the way of eating! Find out why we hiccup and discover some unusual ways to get rid of them.

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.

Kids will learn about fossils in this worksheet. Help your child learn about the scientific method by getting him to examine a fossilized dinosaur skeleton.

Practice using the periodic table to calculate the number of neutrons in the atom of an element.

When we get embarrassed or anxious, and all of a sudden our cheeks get red! Why does our body do this? Find out what scientists think blushing is all about.

Teach your little scientist the difference between physical and chemical changes, on a molecular level.

Both of these animals have big ears! Your child will look at the pictures of unusual animals in this worksheet and try to learn some new things about them.

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.

Life on Earth is vast and varied, from high in the sky to the bottom of the sea. Learn more about what lives on Earth with this reading and quiz worksheet.

Trace the dotted lines to place these holiday icons in the correct seasons. When you're done, write the name of the season underneath the picture.

Use this fossils worksheet to help a child learn about life on earth. Your child will learn about evolution and extinction, and also form a hypothesis.

Learn all about the liver with this anatomy sheet. Our liver is one of many organs in the digestive system expelling waste from the body.

Children learn the fascinating physics behind lightning, along with a few fun facts, in this physical science worksheet.

You have a lot in common with all the other humans on this planet. You all have noses and arms and fingernails, but what makes you different?

Learn all about how we breathe with this info sheet about lungs. Your child will learn the different parts of the lung, including terms and concepts.