This publication is part of a series of teaching-learning modules developed by UNESCO and P&G Whisper India with the goal of integrating period and puberty education in school curricula. The series is structured into five modules that address key intervention areas related to MHHM, including: 1. building a curriculum that understands the biological and social impacts of puberty; 2. guiding teachers on the menstrual hygiene education curriculum; 3. providing teaching-learning materials geared towards addressing the specific needs of girls with disabilities; 4. highlighting the impact of gender inequalities on menstrual health and hygiene for both girls and boys; and 5. addressing nutritional approaches related to menstrual health and hygiene. This teaching-learning module was developed for teachers working in various contexts and with diverse needs and aims to support them in initiating conversations around MHHM and including the subject in school curricula for students across the gender spectrum. The purpose of this module is to provide facilitators with multiple and comprehensive strategies that lead to positive changes in attitudes, behaviours and practices around menstruation. Each chapter contains explanations of the subject at hand, stories, case studies, learning activities, illustrations and tables designed to provide a better understanding of the issues surrounding MHHM. A glossary is also included to ensure that you, the reader, become familiar with different terms related to menstruation.