In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

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

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.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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.

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

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

This science fair project idea determines if the color of light affects the growth of plants.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This science fair project idea explores the egg's thin membrane.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Examine the effect of pressure on carbonation in soda.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

An home science experiment for older students that teaches about the science behind heat.

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

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

Have your child kick off their summer vacation by making a miniature water slide!

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.