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.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

This experiment explores the question of whether age and/or gender play a role in people's ability to remember dreams.

This science fair project studies whether DSLR and Point-and-Shoot cameras work the same way under all conditions.

Demonstrate if cooking destroys all bacteria that is present in raw meats such as salmonella.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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.

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 experiment evaluates whether a person's eye color affects their ability to identify colors in low light.

We're all familiar with the idea that some songs âget stuck in your head.â This experiment explores the validity of that claim.

The objective of this experiment is to find out if cooked beans grow faster, if at all, than uncooked beans.

This science fair project idea discovers whether plants grow best in chemical fertilizer, organic fertilizer, or with no fertilizer at all.

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 that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

Choose a timeline to live without technology. Keep a journal of all the issues encountered. What are the benefits and cons of modern technology?

Thermometers are how we measure temperature, and we've all heard the terms "centigrade" and "Fahrenheit" tossed around, but what do they really mean?

This science fair project idea studies the acidity of rain water and whether the acidity is the same on all rainy days or does it fluctuate.

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

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.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Check out this fun science project idea on ecological succession and learn the main difference between primary and secondary succession.

This science fair project idea tests the efficacy of both synthetic and natural antibiotics.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

Science fair project that tests whether cats have a preference for organic food.

This science fair project idea tests the efficiency of short term memory.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Science fair project which tests which antacids are most potent by measuring how well they neutralize the acid in lemon juice.