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 simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

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

Invite your second grader to help you measure and mix these fresh, cool concoctions!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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

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.

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

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?