Haymay is an app that supports collaboration within and between groups of learners working to solve the same problems in Mathematics, History and Logic. Firmly rooted in iterative design-based research, it focuses teachers and teacher educators on the pedagogic challenges of effective computer supported collaborative learning. The core Haymay app that enables collaboration within and between groups working on all-in-one touchscreen computers. Participants work with partners using the same screen. They simultaneously work with partners in another location (anywhere in the world), sharing information using a single ‘flick’ gesture.