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.

The purpose of this science fair project is to build a basic radio.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Ready for a game that's mostly about strategy with a little luck thrown in for good measure? Make math fact practice exciting and start rolling the dice!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This science fair project idea determines the most effective method of preserving food.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

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

This science fair project idea examines whether boys and girls differ in reflexes.

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

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

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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

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

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!