Many of your younger students do not believe that air around us has mass or weight, let alone exerts pressure on us and on everything around us. So, the idea that the atmosphere in which we walk actually has mass and can exert pressure on our world may seem completely ridiculous to many of your students. The story itself, however, is a type of formative assessment, and a discussion about the various opinions given will provide you with valuable information on what the students believe about the air that surrounds them. This free selection includes the Table of Contents, Introduction, and Index. As a special bonus, the chapter entitled Using The Book and The Stories is also included.