Wiley compared OER to a toothbrush, which only provides the potential to improve dental hygiene when it is used (Thomas, 2010, Wiley, 2011). The use of instructional technology is usually classified by its purpose regarding the existing teaching and learning environment in which it is used. The SAMR-model developed by Puentedura (2006) constitutes a framework that can be applied to how OER are being used in teaching and learning.