On April 23, Sophie Tiggelman successfully defended her Master thesis. The defence took place online, the new normal now. The research Sophie conducted was about the results of the implementation of formative assessment on motivation for learning mathematics in secondary special needs education. The focus was on the introduction of rubrics and feedback legends. The study was done with over 40 students. The results showed positive effects. Congratulations Sophie Tiggelman, and thank you very much Dr Joachim Wetterling for the assessment of the thesis.