How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

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

In this science fair experiment, kids will use the acid test to discover how to tell one mineral from another.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Should you use âFITâ Fruit and Veggie Wash or plain water to wash your produce? Find out in this science fair project idea.

In this project, different childproof containers are tested to see how childproof they really are.

This science fair project idea investigates how different disinfectants work in killing germs.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

This experiment explores whether music affects the growth of bacteria and could help figure out better ways to process sewage and other microbe-assisted duties.

Research camouflage products and techniques, test quality by timing volunteers. Calculate the average length of time to recognize the subject.

This science fair project determines how age affects the speed that someone can change the focus of their eyes between near and far sightedness.

This science fair project idea teaches kids the different functions of a leaf.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Find out whether matching resonant frequencies can cause objects to shatter.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This experiment evaluates if the lighting in a room affects the speed at which test subjects perform mental tasks.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

This science fair project idea determines the most effective method of preserving food.