This book introduces middle school students to the basic facts of human reproduction and explains the physical, emotional, and social aspects of growing into adolescence. Designed with a structured sequence of six lessons and activities, this module includes teacher scripts, reproducible worksheets, and transparency masters. Lessons cover: (1) establishing ground rules for classroom discussion; (2) the three stages of adolescence; (3) the female reproductive system; (4) the male reproductive system; (5) fertilization and conception; and (6) social and emotional changes. (JD)