This teacher's guide is part of a series of three interactive books on tobacco, alcohol, and marijuana; three informational books containing parallel content; and three teacher guides designed to give students in grades five through eight practice in using the information and skills presented in the books. The guide provides teachers with a structured sequence of classroom activities to augment the information and skills presented in the interactive and informational books about marijuana. The goal of books and curriculum is to prevent marijuana use by preadolescents. A reading component suggests options for having students read the interactive and/or informational books about marijuana. Nine 45-minute lesson plans are included for students to participate in after having read the books. Each lesson consists of activities in which refusal skills are taught, modeled, and practiced. Homework assignments and review quizzes are included to help students internalize information and skills. Also included are a curriculum outline, curriculum alternatives, background information about marijuana, and a discussion of the cognitive-behavioral approach taken in the series. The appendix contains instructions for implementing a substance abuse unit covering all three topics of tobacco, alcohol, and marijuana, and suggests ways to integrate the reading components for alcohol and marijuana in the 9-day series of lesson plans. (NB)