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

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

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

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

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

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

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

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

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

This science fair project idea demonstrates that plants give off water.

In this science fair project, students use the streak test to tell minerals apart from each other.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

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 goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

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