Peter Manfred Gonscherowski is a researcher at the University of Köln, Germany. His research focuses on the digital competence of pre-service teachers and the development of assessment instruments. In particular, the selection of digital learning material for the assessment of the digital competence of pre-service mathematics teachers. He has contributed to national and international conferences, GDM, CERME, PME, and FAME, and published his work in peer-reviewed international journals. He serves as a reviewer for “Education and Information Technologies”, “Teaching and Teacher Education”, and “Journal of Primary Education Innovation and Research”.