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

Find out whether people within a family tend to have matching fingerprints.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project idea determines if the color of light affects the growth of plants.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

This interactive project invites science fair-goers to participate in examination and recording to demonstrate the importance of firsthand observation.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

This experiment explores whether caffeine improves athletic performance.

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

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

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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 cultivates slime mold and monitors the stages of its development.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

This science fair project challenges students to research vortices occurring in nature and then create their own vortex.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Determine the effect of reading aloud on memory skills. Prepare a list of randomly chosen words, ask volunteers to recall as many as possible from the list.

The objective of this science project is to investigate patterns in fingerprints among family members.