Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

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

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea explores substances that cause a bubble to last longer.

What combination of cloth and stain will be the easiest for removing stains? Test and experiment!

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science fair project idea examines the reason boats are shaped and engineered.

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

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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

This science fair project idea determines if the color of light affects the growth of plants.