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

Test whether plants can grow without sunlight and water.

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

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Help your child plant a "tea garden": a garden made of herbs for making teas.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

In this project students experiment with making music using only glasses of water.

This science fair project idea investigates how color affects temperature.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

This project investigates the affect of storage temperature on microwave popcorn.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Find out whether putting something on top of a plant will inhibit its growth.

Find out which kind of bubble wrap fares best when put in impact.