A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

Check out this fun high school science fair project idea to investigate how the cell membrane regulates what moves into and out of cells.

Research long-term effects and draft a questionnaire about frequency of marijuana use and average annual income. Interpret findings in a detailed report

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

Research active ingredients in anti-aging creams. Test skin creams on volunteers, document the effectiveness of the creams with before an after photographs.

Create groups of volunteers based on frequency of playing video games. Compare driving records. Analyze data, interpret findings.

Explore the concept of receptive fields and why different parts of our body have different levels of sensitivity.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Research responsibilities of physicists, and common thinking patterns. Devise a questionnaire that measures career aptitude in physics.

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

Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?

Science fair project in which you will stage an election campaign to determine whether people are more swayed by a positive ad or negative ad.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

Demonstrate and describe acid-base reactions of baking soda and baking powder by making pancakes.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

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.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

This science fair project demonstrates the "power of conformity".

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Science fair project that examines the biodiversity of ant populations in various locations.