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.

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.