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

Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

This project examines whether humans can intuitively grasp numeric values greater than three.

This surprisingly good glue recipe comes from common kitchen items.

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.

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

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

This project compares the strength of one, two, and three-ply toilet paper.

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

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.

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

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

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

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

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.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

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

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

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.

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