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This conservation of energy demonstration shows why the first hill is the highest on a roller coaster. Learn more about potential and kinetic energy!

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

Design a more versatile real estate website. Contact realtors and real estate websites for advice and further information. modify an existing design

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

Science fair project that determines whether disinfectant sprays or disinfectant soaps are more effective at removing bacteria from hands.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

Learn more about consumer preferences, product availability and pricing. Search ebay listings typing keywords of your choice. Interpret statistical analysis

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

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!

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

Give your child a chance to experiment with how things grow. And throw in something extra to up the fun factor even more...her very own grass pet!