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In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science fair project idea explores which fruit molds the fastest.

Determine if gender affects the ability to identify different smells.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Construct and experiment with a periscope using reflected light rays to gather an image.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

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.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Plant sunflower seeds , measure height, calculate average height, compare size and weight of heads. Interpret findings in detailed report.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Discover which absorbent material is the best; the Shamwow, paper towels, or cotton towels.

This project examines whether and what associations exist between numbers and letters and colors.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

The objective of this experiment is to find out if cooked beans grow faster, if at all, than uncooked beans.

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

Free science fair project idea examining how different types of water affect plant germination and growth.

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

This project explores ways to prevent static electrical shocks.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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

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?

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project compares the abilities of men and women to understand subtle communication through body language.

In this science fair project, students examine how temperature affects sugar transport within a plant.