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.

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

Engineers in training can get started with this simple wheel-and-axle construction activity.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Examine the effect of pressure on carbonation in soda.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project idea's objective is to understand the concept of air pollution and examine the quality of air in our environments.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

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

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

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

Try this chemistry experiment with your curious kid and get some "shocking" results!

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

This science fair project idea determines the most effective method of preserving food.

Transform your uncomfortable wooden shoes into charming mini planters!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

This science fair project idea investigates whether plants can survive being frozen.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!