Book excerpt: "What is the very best instruction for English learners? How do we capitalize on and further develop the linguistic knowledge and skill of this segment of society? Nonie Lesaux and Julie Harris are exceedingly well qualified to address these questions. On the cutting edge of EL instruction, their combination of research knowledge and practical experience makes for guidance that can be trusted, and implemented, in classrooms throughout the country." --Nell Duke, Series Editor, University of Michigan In today's linguistically diverse elementary classrooms, research suggests that a universal approach to building academic vocabulary and conceptual knowledge holds huge promise for closing the opportunity gaps among English learners. In Cultivating Knowledge, Building Language, Nonie Lesaux and Julie Harris present a knowledge-based approach to literacy instruction that supports young English learners' development of academic content and vocabulary knowledge and sets them up for reading success