Abstract-This article discusses assessment for learning in mathematics subjects. Teachers of large classes face the challenge of regularly assessing students' ongoing mathematical learning achievements. Taking the complexity of assessment and feedback for learning as a background, we have developed a new approach to the assessment for learning mathematics at university level. We devised mobile tablet technology supported assessment processes, and we carried out user studies in both Rwanda and Norway. Results of our study indicated that students found it fruitful to be involved in assessing other students' mathematics work, i.e. assessing fellow students' answers to mathematical tasks. By being involved in the assessment process, the students expected mathematical learning gains. Their providing and obtaining of feedback to/from their fellow students using technology supported tools were highly appreciated as regards their own mathematical learning process.Index Terms-Mathematics assessment, mobile tablet technology, feedback for learning.