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.

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

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.

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.

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.

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.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.