http://swrc.ontoware.org/ontology#Misc Use of OER as course materials at WOU: what worked, what could have been done better en Use of OER Course materials Impact Kaushik Madhulika Open access publishing This paper presents a study, aimed at analysing the implementation and use of OER at an open university for three different courses across three schools of study of WOU. All three courses, components of named degree programmes of the University, experimented with the use of OER as the core study materials. User data in the form of continuous and final assessment, measurement on learning outcome matrices, learner feedback and evaluation statistics as well as focus group data from faculty, tutors and other stakeholders were analysed to study the impact of OER use as course materials. Electronic Paper presented at the 29th Asian Association of Open Universities (AAOU) Conference (30 November-02 December 2015; Kuala Lumpur, Malaysia) Wawasan Open University