Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

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

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

Find out whether putting something on top of a plant will inhibit its growth.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Explore convex and concave objects and how they reflect light.

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Jazz up your patio or backyard with hip and quirky planters made from simple Mason jars.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.