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This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

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

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

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

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Build an electroscope, a simple device that measures static electricity, or the freely flowing electrical charges of the atmosphere!

Research responsibilities of physicists, and common thinking patterns. Devise a questionnaire that measures career aptitude in physics.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

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

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Science fair project that explains and demonstrates the parallax principle.

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Construct and experiment with a periscope using reflected light rays to gather an image.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

Does fear cause the same physiologic responses in men and women? This experiment measures people's blood pressure and heart rate while watching a scary movie.

Science far project which determines whether the material of a baseball bat affects the distance that the baseball will travel.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

In this physics project, you'll learn how to find the maximum height of a projectile using some math and trigonometry.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!