The development of students’ conceptual understanding of the world is vital to their academic success at all grade levels (preschool through high school) and across content areas. This professional resource and course text presents expert perspectives on building conceptual knowledge and vocabulary through reading, writing, and classroom discussion. Topics include the importance of word study and informational texts in early literacy, discussion practices that boost comprehension, the use of multimodal and appropriately complex texts, engaging digital literacies, and discipline-specific writing. Ways to strengthen English learners’ conceptual skills are highlighted. Each chapter describes current research, explains how to plan and scaffold instruction, distills Implications for Professional Learning, and offers Questions for Discussion.