Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

This science fair project idea explores if people with cool skin tones prefer cool colors and people with warm skin tones prefer warm colors.

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

This science fair project idea investigates the difference in reaction times between boys and girls.

This science project helps students gain understanding of bioluminescence, the phenomenon that allows fireflies and glow worms to give off light.

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.

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

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

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.

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

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

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.