OpenMath Preface This volume contains the papers presented at the 25th OpenMath Workshop held on July 10, 2013 in Bath. There were 3 submissions. Each submission was reviewed by at least 3, and on the average 3.3, program committee members. The committee decided to accept 3 papers. We would like to thank our peer reviewers for carefully reviewing the sub- missions and giving constructive feedback. This proceedings volume has been generated with EasyChair and ceur-make, which made this task really convenient. July 6, 2013 Christoph Lange Birmingham James H. Davenport Michael Kohlhase Program Committee James H. Davenport University of Bath Lars Hellström Umeå University Jan Willem Knopper Technische Universiteit Eindhoven Michael Kohlhase Jacobs University Bremen Christoph Lange University of Birmingham Paul Libbrecht Center for Educational Research, Martin Luther University Halle v