Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

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

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

This science fair project idea determines what household items are good conductors of electricity.

In this science fair project, students create their own miniature salt flats at home.

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

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

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

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.

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

This project examines whether playing music during class helps students learn or if it distracts students from learning.

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Examine the effect of pressure on carbonation in soda.

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.

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

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

This science fair project idea investigates the difference in reaction times between boys and girls.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This project examines what types of objects burn and which burn faster and cleaner.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

This basketball project explores the best way to make the perfect shot every time.