Science fair project which examines the chemical reaction of a candle flame with various gases in order to determine the identity of the gas.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science fair project idea explores substances that cause a bubble to last longer.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

This science fair project aims to examine the nature of pi and analyze other properties and values related to circles, such as radius, diameter

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

This project examines what types of objects burn and which burn faster and cleaner.

Check out this fun science fair project idea to measure bacterial colonies from door handles and explore the effectiveness of different cleaning agents.

This science fair project investigates how temperature of a room affects the burn rate of a candle.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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.

Determines the extent that high school GPA predicts future income. Survey volunteers, divide GPA into 5 categories, compare income levels with GPA

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

This science fair project idea explores if male or female humans are more likely to exhibit some form of color blindness.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This study observes plants, insects and an animal living in proximity to a known source of EMF.

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

Determine how wind speed affects the stability of a kite and the ease of getting it into the air.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Science fair project that illustrates the properties of black holes in space.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Science fair project that determines the correlation between the ability of selected materials to conduct heat and a material's density.

Calculate the mass of the Earth using the sidereal and calendar period of the Moon and Newton's Law of Universal Gravitation in this physics science project!

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.