This collaborative session explores how teachers can leverage Writable to strengthen student writing, critical thinking, and content understanding in both ELA and high school math classrooms. Participants will engage in hands-on activities that demonstrate how writing can deepen comprehension of complex texts and mathematical reasoning. The session will highlight strategies for integrating writing tasks, providing targeted feedback, and using data insights to support student growth across disciplines. Attendees will leave with practical approaches to increase engagement and improve student outcomes through purposeful writing. • Design and implement writing-to-learn activities that enhance comprehension in both ELA and high school math. • Use Writable tools to provide targeted feedback and track student progress to inform instruction.