This extremely useful book concentrates more on Bell's work as an educator and inventor than on his personal life. Two-to-three page inserts explain the various scientific principles discussed in the main text. For example, Bell was intensely involved in teaching the deaf. As this part of his life is discussed, an insert explains sound, speech, and hearing, and how all three are intertwined. Glimpses of the man behind the scientist are given in a lively, yet informative fashion. Black-and-white photos and reproductions enhance the presentation and bring the personal details to life. Although there are many books on Bell available, this one is a worthy addition to any collection.