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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science project allows students to study the psychology of happiness.

This science fair project idea investigates the difference in reaction times between boys and girls.

In this fun experiment, we'll find out how color affects heat absorption!

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

This science fair project idea explores substances that cause a bubble to last longer.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

This science fair project idea determines if the color of light affects the growth of plants.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

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

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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 objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

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

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

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

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?