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

This science fair project idea investigates whether plants can survive being frozen.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

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

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

This science fair project idea provides evidence that air is everywhere and takes up space.

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

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Discover which fabrics shrink the most in the wash and why.

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

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Demonstrate how to tell the age of an egg without having to crack it open.

This science fair project idea explores whether talking to a plant will help it grow.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

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

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

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

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.