With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project idea compares biodiversity between drops of water.

The objective of this experiment is to evaluate the effects of acid rain on plants.

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.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

Learn about the factors that influence group conformity.

This cool music science fair project idea has kids determine the effect of music on memory. Can music improve our cognitive abilities? Why or why not?

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

Discover whether the color of text correlates with ease and speed of reading.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Looking for a fun project on energy? Check out this fun elementary school science fair project idea that demonstrates chemical energy in a bottle.

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

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Explore whether pianists have the tendency to type faster than non-pianists.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

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

Science fair project that creates fog using bottles of hot and cold water.

The purpose of this science fair project is to build a basic radio.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This experiment investigates if small changes in your diet can alter your basal body temperature.

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!