Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

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

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Learn how different types of soil affect how animal tracks form in this experiment!

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Learn about our response to scents that existed in our environment over evolutionary time and consider why scents might affect our mood state.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Science fair project that studies how the brain transforms man-made symbols into meaningful concepts.

The objective of this science project is to investigate patterns in fingerprints among family members.

This science fair project idea focuses on the use a conductivity device to determine the ionic concentrations of hard water.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

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.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Investigate the kinds of memories we tend to store and the emotions we store with them. Determine if memories have a strong emotional component.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

This science fair project idea investigates food preference of birds.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.