This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

The project determines which type of birds prefer which type of birdseed.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science fair project teaches students about wilting and browning of salad greens.

Plants and light seem to be good buddies, but how far does the friendship really go?

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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 experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

The project investigates how friction affects motion by using different surface textures.

In this science project, the center of gravity is explored.

In this project children practice the scientific method while playing with puffy paint.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

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

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

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

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.