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

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

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

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

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.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

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

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

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

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

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

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

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

This science fair project idea produces sounds by creating vibrations using different objects.

Examine the effect of pressure on carbonation in soda.

This project determines what category of person is most likely to be ticklish.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

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

This project investigates the affect of storage temperature on microwave popcorn.

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

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

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This science fair project idea investigates if fats add to the flavor of food.

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

This science fair project idea investigates how color affects temperature.