This document discusses the concepts of localization and contextualization in teaching. It defines localization as allowing schools and local authorities to adapt curricula to local conditions by relating curriculum content and teaching methods to the local environment. Contextualization is developing skills, knowledge, and attitudes in students by presenting new topics in meaningful and real-life contexts. The document provides reminders for teachers on localizing instruction, such as using available local materials, anchoring lessons to students' lives, and building on school resources while respecting diversity. Localization and contextualization can enhance teaching all subjects according to the Philippines' Enhanced Basic Education Act.