Dear friends of JSXGraph, we are very happy to welcome you at the 24 hours of JSXGraph 2025. We will meet in the lecture room H20 in the building Naturwissenschaften II (NWII). The lecture room is in the part of the building with yellow windows. The program is online, see https://jsxgraph.org/24hours2025/program. We would like to ask all the speakers to restrict their talks to roughly 15 minutes. After the talks we work together in groups.

Dear friends of JSXGraph, this is the official announcement of the 2025 user meeting 24 hours of JSXGraph. Date: 26.-27. February 2025 Meeting homepage: https://jsxgraph.org/24hours2025/ The 24 hours of JSXGraph will be organized by the Center of Mobile Learning with Digital Technology at the University of Bayreuth, Germany. With thanks in advance and with best regards, Carsten Miller, Alfred Wassermann (Organizers)