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Does nail polish really slow the growth of nails? Explore in this science fair project idea.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

This science fair project idea determines which method of hand cleansing is the most effective.

This science fair project idea explores alcoholic fermentation at work by making your own soda.

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

This experiment explores the most common colors that appear among a sample of crossbred guppies.

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair project, students create their own miniature salt flats at home.

In this science fair project, students evaluate if the phases of the moon affect the way people feel.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This science fair project idea creates an underwater habitat and explores the basic needs of living things under water.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

Devise an argument for or against the possibility of resurrectin extinct species through DNA manipulation. Analyze data, report findings.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

Science fair project that examines condensation and the conditions needed in order for dew to form.

In this experiment, you will evaluate whether or not a diet that is supplemented with "brain-enhancing" foods can help improve memory.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.