This book is a teacher's guide for dealing with and modifying childrens' behavior. Chapter one discusses behavior and how it is strengthened, weakened, or shaped by consequences of the behavior (rewarding, ignoring, punishing). Chapters two and three present techniques which can be used to strengthen desirable behaviors and weaken undesirable behaviors. Chapter four offers hints and tricks of the trade to be used in shaping behavior and in behavior maintenance. Chapter five presents a sample experiment used to modify a hypothetical student's undesirable behavior. Chapter six first gives some examples of children with problems and then discusses methods of dealing with and solving these problems. Chapter seven is an outline summary of the main points discussed in the book. Three appendixes are attached. Appendix A is a three part survey quiz on the material presented in the book; Appendix B presents a classroom point system which the teacher may institute in order to modify students' behavior; and Appendix C is a list of "pay-offs" for school-aged children. (BD)