OpenStreetMap mapathons support critical data and visual literacy instruction.

OpenStreetMap (OSM) mapathons can offer a learner-centered means for critical data literacy and visual literacy instruction. Mapathons are coordinated humanitarian mapping events in which participants use geographic information system (GIS) data and satellite imagery to create open-source maps for humanitarian support. Visual mapping is an effective learning activity because it encourages students to use big data to create a deliverable-an open-source map-that allows instructors to engage learners in data literacy and visual literacy at the highest cognitive level.