This publication presents K-12 tobacco use prevention lesson plans for schools in the state of Montana. Lessons for students in grades K-6 include: family connections; body tracing; smokeless tobacco; prenatal development; tobacco look-alikes; tobacco chemicals; analyzing tobacco and alcohol ads; tobacco use and the lungs; and a personal health survey. Lessons for students in grades 7-12 include: assertiveness and tobacco; long-term effects of tobacco on the body; tobacco advertising; decision making; understanding choices; resisting temptation; drugs and crime; nicotine addiction; the media myth; and the tobacco industry. Each lesson includes: the objective; life skills addressed; teaching facility required; necessary equipment and materials; information; classroom arrangement; instructional strategies; and resources. (SM)