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What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

This project compares the strength of one, two, and three-ply toilet paper.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Science fair project that determines whether mass and weight are the same or different.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Examine the effect of pressure on carbonation in soda.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

This science fair project idea investigates which objects float and sink in honey, water, and oil.