Humboldt-Universität zu Berlin | Projects | Central | CENTRAL Projects 2015 - 2018 | International Promotion of Students and Young Researchers | Problem Solving in Mathematics Classrooms in Hungary and Germany | Prof. Dr. Andreas Filler Prof. Dr. Andreas Filler Foto Filler neu.jpg image/jpeg Type image/jpeg Dimension Dimension 150x103 Size File size 25.4 KB Download View full-size image