In this science fair project, students use the streak test to tell minerals apart from each other.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

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

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This science fair project idea explores the egg's thin membrane.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

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

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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

In this experiment you will replicate the mummification process by making a hot dog mummy.

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.

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

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

This science fair project teaches students about wilting and browning of salad greens.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Discover whether cold or hot water from the faucet will boil faster on the stove.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

In this project children practice the scientific method while playing with puffy paint.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.