Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

This science fair project idea produces varying pitches of sound.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

This biodiversity project examines the biodiversity in your own backyard.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Science fair project that determines whether mass and weight are the same or different.

In this fun experiment, we'll find out how color affects heat absorption!

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

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

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

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Explore scientific concepts with this experiment that introduces kids to the scientific method!

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.