Fifth graders discover the process of boiling water and how it is part of the changing of states of matter. They observe a kernel of popcorn pop in a test tube with water and take notes of how the water changes to the form of a gas....

From the Engines of Ingenuity web site. A lengthy page discussing ingenuity and invention as it pertains to steam engine history. Very anecdotal and interesting. Includes biographical information and interesting details about Hero of...