What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

This experiment will use computers to examine how the famous Mandelbrot set can be manipulated in fractals.

Investigate how to keep your fruit fresh for longer. The purpose of this science experiment it to determine which kind of bag best preserves fruit.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

This science fair project idea explores edible things you didn't know you could eat.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

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.

This science fair project idea determines whether the diet and taste preferences of humans relate to their personality.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

This experiment explores whether music affects the growth of bacteria and could help figure out better ways to process sewage and other microbe-assisted duties.

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

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

Explore convex and concave objects and how they reflect light.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science fair project idea quantifies the effect of specific food sources on red worm (Eisenia foetida) livelihood.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project idea provide quantitative data about how well the use of ASL ( American Sign Language) works in communicating with babies.

This cool electricity project teaches kids how connecting batteries in series vs. parallel circuits can contribute to different levels of voltage and amperage.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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.

This science fair project idea determines which flower lasts the longest.