This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Is it a square or a circle? See if you can trick your friends with this zany science project!

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science fair project idea determines which method of hand cleansing is the most effective.

Test your friends to find out if you can replicate the placebo effect's incredible results.

This science fair project examines how seeds hitchhike on animals and clothing.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

This project determines what category of person is most likely to be ticklish.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.