This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

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

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

Solve the mystery of the unpoppable balloon in this 7th grade science experiment that demonstrates the process of heat transfer.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Help your first grade scientist learn about metamorphosis by observing the life cycle of some interesting creepy crawlies.

Celebrate Dia de los Muertos by baking pan de muerto. In this 5th-6th grade activity, your child will explore another culture while learning about baking.

Use playing cards to learn about temperature as well as positive and negative integers in this fourth grade math game.

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

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 next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

This fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

This science fair project idea determines which flower lasts the longest.

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

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

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

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

This project concerns activity happening millions of miles away, on the sun.

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

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!