A method for reading Piaget is presented in this guide, written for practicing teachers who want better understanding of Piaget's writings. An account of a Piagetian experiment is given, followed by a discussion of its theoretical and practical implications. Eight topics are explored: number, measurement, knots, perspectives, coordinates, floating and sinking, moral judgment, and the behavior of babies. The conclusion provides a synopsis of Piaget's theory of stages of cognitive development. The experimental examples chosen cover a wide age range to emphasize the genetic approach and to extend the appeal of the guide to as large a group of teachers as possible. Examples were also chosen because they are especially applicable in schools. (Author/AJ)