This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

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

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

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

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

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

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

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

This science fair project idea investigates if fats add to the flavor of food.

In this design challenge, your child will create a parachute for a small toy using typical household items.

This science fair project idea explores substances that cause a bubble to last longer.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

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

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

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.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.