This episode of Liquid Margins traces the story of social learning and student success in the Contra Costa Community College District, where weaving social annotation in as a teaching practice has significantly increased student engagement and learning outcomes. We welcome guests from Contra Costa College, Maritez Apigo — Distance Education Coordinator, Open Education Resources Coordinator, and English Professor — and Brandon Marshall, English Professor. Joining them as the show’s guest moderator is Kat King, Instructional Designer at Diablo Valley College and English Instructor at Las Positas College. RSVP to learn more about the Contra Costa story and glean insights about using collaborative annotation as a tool for constructing learning communities and knowledge sharing in the margins of texts. For a primer and demo on using Hypothesis, watch a recording of Hypothesis 101.