This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

This project concerns activity happening millions of miles away, on the sun.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

Learn about the field of psychophysics and to learn about "Just Noticeable Differences."

This experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Measure the porosity of rocks by submerging them in water. Measure how much water each rock "drank," by measuring the difference in water volume.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Examine the effect of pressure on carbonation in soda.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Use a microscope in this experiment to learn about different kinds of "good bacteria" that turn milk into yogurt!

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This project compares different liquids and the freezing, melting and boiling points of liquids.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Explore which teeth-whitening products work best - Whitestrips or Whitetrays.

Check out this cool science fair project idea to learn why it is important for kids to eat healthy foods like fresh fruits and vegetables.

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

This science fair project idea investigates whether air has mass and weight.

Measure the densities of various fruits and vegetables to determine if there is a relationship between density and nutritional value.

This science fair project idea demonstrates the property of bouncing in a fresh new way.

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