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.