This document provides an introduction to a module on gender and sexuality. It establishes the differences between sex, gender, and sexuality. The learning objectives are to understand these basic concepts, discuss the historical roots of gender and sexuality, and reflect on one's responsibility regarding gender development and well-being. The module then defines sex and gender, examining how gender roles have changed over time and been influenced by different societies and eras. It also frames gender and sexuality as psychosocial issues and discusses factors like awareness, relationships, commitment, and identity.