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.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

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.

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

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

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

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

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

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?

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

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 determines if the size of the parachute will change the rate at which an object falls.

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

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.