In this activity your child will create their very own marble maze!

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.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

In this fun activity, your child will create their very own solar oven to bake s'mores!

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

How powerful is the reaction between baking soda and vinegar? Find out here!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

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

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

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

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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!

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

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Find out whether packaged seeds actually do expire in this new science fair project idea.