In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

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

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

In this activity, your child will make her own "quicksand" to better understand how a substance can be both fluid and solid at the same time.

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

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

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Discover how and which salt melts ice the quickest.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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 science fair project teaches students the differences between fruits and vegetables.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

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

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

The goal of this project is to create an exciting topographical map out of dough.

Take a dive into the candy jar with this yummy science experiment.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

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