This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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

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!

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

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Do you think heat can affect a plant's growth rate?

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

These delicious Easter Basket Cupcakes are a simple, creative holiday treat. These cupcakes sit in waffle bowls with festive coconut grass and jellybean eggs.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

This project tests the hypothesis that dark colors absorb more heat than light colors.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.