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Recycling may be a confusing concept for your little one, so take the time to teach them the magic of compost - right in your own backyard!

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

Would you be able to tell the difference between colored contacts and natural eyes from a normal distance? Find out in this science fair project!

Using plants and other items from the outdoors and clothing they already own, your kids can dress up as any one of the four seasons or simply as a Garden.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

Learn about our cognitive capacity of attention and to learn about factors that influence attention.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

This science fair project idea explores whether talking to a plant will help it grow.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

Check out this cool science fair project idea to explore short and long term memory and whether there is gender differences in memory.

This experiment evaluates how much influence an enticing package has on childrensâ willingness to try a new snack.

Science fair project that determines the effect of concentrated mental effort on physical performance levels.

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!