Air

A short scientific explanation of air, examining such phenomena as wind and atmospheric pressure. Remember your Classical education? The philosophers always talked about the four elements -- air, earth, fire, water. This wonderful series by author J. M. Parramon introduces the four elements in a simple, easy-to-read text with colorful illustrations that keep a youngster's interest solidly on the page. Each book has a section to help parents answer questions from inquisitive children. Buy any one or give a gift of the whole series as a boxed, paperback set.