Afstudeeronderzoek Morsink, T.O. (2021) The relationship between planning differentiation and differentiated instruction in practice. Habermehl-Mulder, A.T. (2019) Assessing Differentiation in All Phases of Teaching : development of an assessment system for differentiated mathematics instruction in primary education. Safar, I. (2019) Primary school teachers’ development of differentiation skills : comparing skills, teachers’ mastery of skills, and factors influencing the development of skills. Vreman, L. (2019) Differentiation in kindergarten : a cognitive task analysis of kindergarten teachers´ thinking and acting in providing differentiated early numeracy education.