In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Test out various brands of permanent markers to see which one is least water soluble.

This project investigates several commercially decaffeinated tea types (black, green, oolong, white) for the presence of detectable traces of caffeine.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This surprisingly good glue recipe comes from common kitchen items.

This experiment explores the most common colors that appear among a sample of crossbred guppies.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

This experiment uses personality assessments to evaluate if certain personality traits are more common in people with unusual first names.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

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

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

Science fair project that compares tap water and bottled water for the presence of common impurities.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Help your kindergartener identify and sort eight different kinds of common seeds on this "seed wheel" plate you can use all growing season.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

Is garlic antibacterial? Antimicrobial? Kids find out by using common kitchen equipment and ingredients in this cool and easy microbiology science fair project.

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

In this experiment you will replicate the mummification process by making a hot dog mummy.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

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