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This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

Check out this cool science fair project idea to explore various aspects of projectile motions like mass, angle and distance.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

This science fair project idea studies whether a religious sleeping schedule relates to a higher IQ.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

This experiment evaluates whether the phenomenon of "choice blindness" occurs more often with men or women.

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

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

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

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

This science fair project idea studies how talking on a cell phone affect driving?

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

The thermometer outside is dip, dip, dipping! What kind of clothes will keep you warmest this winter? This project determines which materials insulate best.

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

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.