The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

This science fair project idea investigates whether plants can survive being frozen.

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Make edible amber fossils with your second grader to explore the fascinating world of science!

Plants and light seem to be good buddies, but how far does the friendship really go?

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

This science fair project examines the different composition of fungi and plants.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

The purpose of this science fair project is to determine whether Green Bags, with or without refrigeration, are most effective in preserving food.