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

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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

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

The project investigates how water and movement affects erosion.

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

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

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

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea determines which method of hand cleansing is the most effective.

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 engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

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 fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

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

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

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Examine the effect of pressure on carbonation in soda.

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.

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

This science fair project idea identifies clouds as a means of predicting the weather.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

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

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This science fair project idea demonstrates that plants give off water.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.