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.

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

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

Do males really prefer listening to male than female singers? Find out when exploring this science fair project!

Do different types of oil mix or stack? Find out in this science fair project idea!

This experiment will explore the possibility of a connection between lunar cycles and how humans are affected.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

This science fair project idea explores how water and ice can change the form of rocks.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

Explore the negative and positive consequences of stereotypes.

A math project teaches students to use a clinometer to gauge the height of very tall objects like trees & to think of better ways to measure how high they are.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Science fair project that examines the relationship between the size of a bubble and how quickly it falls. What is the correlation?

This science fair project idea explores how far the average human can see.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

How much gas is released into your stomach by your favorite beverages? This project examines which beverages produce the most gas.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

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?

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.