The author states that this book was written for anyone who wants to know what calculus is all about, and that those with knowledge of some algebra and geometry should be able to understand it. That calculus should be called "slope finding" is discussed, and this term is used extensively. The book is divided into three chapters: (1) the development of slope finding, (2) area finding or integral calculus, and (3) differential equations. Numerous illustrations are given, and computer programs and applications are included. (MNS)