Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

In this experiment, you will evaluate whether or not a diet that is supplemented with "brain-enhancing" foods can help improve memory.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Assess physical and mental states of subject before and after drinking coffee. Compare initial expectations with their reported conditions.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

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

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

Make frog feet sponge prints with your child for a fun and educational crafts activity.

This experiment investigates if stress alters body temperature.

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

The scientific purpose of this experiment is to investigate which material is the best packaging for fragile items during shipping.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

In this science fair project idea, kids make water dance on the surface of a hot pan with the Leidenfrost Effect.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

This experiment evaluates how a diet that is rich in "mood-enhancing" foods affects the way people feel over several weeks.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Compare the amount of ozone in various locations with this science fair project that will have your kid create her own ozone strips!

In this cool elementary school science fair project idea make a model to learn what happens to the Earth's surface when ice moves over land.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!