This document discusses the craft of writing materials for language learning. It outlines how the field has evolved from an earlier focus on grammar and rote learning to a modern emphasis on meaningful contexts, skills, and the learner's voice. The key developments include greater demand for English instruction worldwide and more complex views of language that consider learners' specific needs. While experience and research are important, writers must also develop craft knowledge through practice. This involves confronting dilemmas like representing learners' characters authentically rather than avoiding the issues. Materials should incorporate new designs like tasks to actualize content holistically rather than through isolated pieces.