What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Want to get your bookworm interested in science? Check out this cool activity that teaches kids how to write science fiction!

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

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

This project examines the concentration of dissolved oxygen in water, with and without oil.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

Science fair project that determines which foods and drinks contain the highest amount of glucose.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

This science fair project idea determines if a particular chemical has an effect (increase or decrease) on the heart rate of Daphnia.

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

Science fair project that examines the relationship between fluid flow rate, pressure, and resistance.