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This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This classic children's game demonstrates how sound travels through air vs. through a solid.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

The objective of this science fair project it to determine whether adding ethanol alcohol to gasoline slows the run time of a motor.

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

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

This science research project challenges students to think of more effective lobster farming methods.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

This experiment investigates if stress alters body temperature.

Monitor the impact learning how to play chess has an academic performance. Divide subjects into two groups compare GPA

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

This experiment investigates whether font choice affects peoplesâ ability to remember the information that they read.

This experiment investigates whether the primacy effect is observed more frequently in specific populations of people.

This experiment evaluates whether there is a relationship between grade point average (GPA) and dating status.

Detail the chemical properties, nutritional value, medicinal effects of garlic, Write a detailed report, prepare recipes.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

Checkerboard play challenges students to use spatial reasoning and computational thinking.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

This science fair experiment examines the relationship between gender, age, and smiling.

Test whether spot magnets can help improve the symptoms of an injury.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

The objective of this science fair project is the compare the rate and efficiency of disaccharide and polysaccharide fermentation by yeast.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

This project will examine the relationship between materials and air resistance.