Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

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

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

This science fair project idea produces varying pitches of sound.

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

This project examines whether people's taste perception is influenced by what they see.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

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

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Find out whether matte or shiny nail polish lasts longer.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Will the shape of an ice cube impact how fast the ice melts?

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

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

This project investigates the affect of storage temperature on microwave popcorn.

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

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.