Book excerpt: What are the principles that every elementary teacher must learn in order to plan and adapt successful literacy instruction? This concise course text and practitioner resource brings together leading experts to explain the guiding ideas that underlie effective instructional practice. Each chapter reviews one or more key principles and highlights ways to apply them flexibly in diverse classrooms and across grade levels and content areas. Chapters cover core instructional topics (phonemic awareness, phonics, fluency, vocabulary, and comprehension); high-quality learning environments; major issues such as assessment, differentiation, explicit instruction, equity, and culturally relevant pedagogy; and the importance of teachers’ reflective practice and lifelong learning.