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.

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

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Science fair project idea examines what is remembered from high school education. Formulate and administer high school curriculum tests to adults over 21.

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

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

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

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

This middle school science fair project evaluates test subjectsâ ability to determine what a person is feeling by reading their facial microexpressions.

This science fair project idea studies whether a religious sleeping schedule relates to a higher IQ.

This experiment evaluates if a noisy environment makes it harder for test subjects to perform tasks that require hand-eye coordination.

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

This science fair project idea investigates the hardness property of minerals.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This experiment explores how listening in to a one-sided conversation affects concentration.

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

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

This experiment explores whether caffeine improves athletic performance.

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

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Learn whether writing things down really makes things easier to remember.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

This science fair project idea determines whether volunteers remember more information presented orally or visually or kinesthetically.

Science fair project that compares tap water and bottled water for the presence of common impurities.

Find out whether pacing in long-distance running actually acquires for drastic changes in finishing times versus running super-fast at the start.