This science fair project idea determines the probability of a coin landing heads or tails.

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

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.

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

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

This project explores ways to prevent static electrical shocks.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

This science fair project idea examines which type of insulation holds in the most heat.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Discover whether a metal will expand under hot water.

In this experiment we will be determining whether birds prefer certain colors of seed.

This experiment tests which gender is better at catching how a magician performs his tricks.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

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

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.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This science fair project explores how osmotic pressure forces water through the root up into the plant.

In this science fair project, students create their own miniature salt flats at home.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

This science fair project idea explores which fruit molds the fastest.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.