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 resource seeks to provide young children with a comprehensive overview of puberty education in general and period education in particular from a health and hygiene perspective. This module was developed with the goal of informing students about, and empowering facilitators to discuss, changes that occur in their bodies during puberty, their nutritional requirements, and safe hygiene practices in terms of MHHM. 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.