This document provides an introduction to Module 6 of a teacher resource package on the Philippine Professional Standards for Teachers (PPST). The module focuses on Indicator 3.1.2 - using differentiated, developmentally appropriate learning experiences to address learners' gender, needs, strengths, interests and experiences. The introduction defines key concepts related to this indicator, such as differentiated teaching strategies, learners' gender, needs, strengths, and interests. It outlines the parts of each module, including an overview, self-reflection, key concepts, illustrations of practice, and a professional development plan. Teachers Jen and Mike introduce the module and will act as supports to help teachers understand and apply the indicator.