This document discusses a teaching-learning material developed by Kusuma Foundation with support from subject experts for use in secondary schools in Uttar Pradesh. The material was developed as part of Kusuma Foundation's Secondary School Readiness Programme and its statewide remedial programme supported by Uttar Pradesh Madhyamik Shiksha Abhiyan. It draws from existing curricula and education materials as well as the views of teachers. The material was finalized after review by the State Resource Group set up by UPMSA. The document provides contact information for Kusuma Foundation.