This document discusses using writing as a learning strategy, called "writing to learn", in content areas like science. It provides examples of writing prompts teachers can use, such as exit slips, learning logs, and quick writes. These brief writing assignments help teachers understand what students are learning and thinking. The document also addresses teaching students to write high-quality nonfiction by using mentor texts, modeling the writing process, and incorporating technology. Overall, it promotes using writing as a way to both teach content and assess student understanding across subjects.