This second grade teaching unit outlines 18 activities intended to teach children safety measures in the event of an encounter with strangers. The unit knowledge goals cover: learning what a stranger is, knowing how to prevent an encounter with a stranger, and knowing what to do if an encounter occurs. The skill goal focuses on decision making, and the affective goal seeks to have the child appreciate the importance of preventative measures. Behavioral objectives are keyed to each of the unit goals and activities. Activities include: reading books about strangers, viewing video-tapes, holding discussions, playing "What if...?" taking a "stranger danger" walk, making up a class play, "decoding" safety rules, practicing emergency phone calls, and creating "stranger encounter" cartoon strips. The unit evaluation is based on a test, work samples, and class participation. A 14-item annotated bibliography is attached, along with the names and addresses of several organizations concerned with child protection. (JDH)