Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

Find out which kind of bubble wrap fares best when put in impact.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

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 color affects temperature.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

In this science fair project you will make a model of a cell membrane using very simple material.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

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?

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

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.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

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

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.