This document discusses a teaching and learning material developed by Kusuma Foundation for secondary schools in Uttar Pradesh, India. The material was created with input from subject experts and is intended to be used by students, teachers, and teacher educators. It draws from existing curricula and education materials as well as teacher experience. The material has been reviewed and approved by a state resource group. While the material cannot be sold, it can be reproduced for educational purposes with permission from Kusuma Foundation.