Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea explores whether color affects a person's emotional state.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Demonstrate that insects observe colors and choose favorites. Place colored pieces of construction paper on a flat, glassy surface, observe bug preference.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Science fair project that determines whether brain size is correlated with intelligence.

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

This science fair project idea compares the cuteness reaction between genders.

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

This science fair project idea explores whether a person's ability to see under very dim lighting conditions diminishes with age.

Learn whether dark green and leafy veggies tend to have a higher Vitamin C content than lighter green varieties.

This exploration of different types of energy will help young minds appreciate and observe thermal, kinetic, mechanical, and other forms of energy.

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

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

This science fair project ideaexplores whether cooking food destroys potential vitamin levels.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This project is about after-images and what possibly affects them.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

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.