Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

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

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

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

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

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.

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

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

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.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

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

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

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

Make a backbone model to explore human anatomy and life science.

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.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

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

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.