Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

In this science fair project, students make their own rain gauge to measure rainfall.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

Check out this cool science fair project on identifying rocks and minerals for kids.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This easy at-home experiment is a great way to "see" science.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Make sourdough bread...and learn some colonial history and modern science in the process!

This science experiment tests if dog saliva can really help heal wounds.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this design challenge, your child will make a bottle rocket using typical household items.