The Process of Developing a Digital Repository for Online Teaching Using Design-Based Research.

The urdue epository for Online eaching nd earning (PoRTAL) was developed as an Open Educational Resource (OER) for graduate students and faculty in higher education settings to enhance their online teaching skills and strategies. The PoRTAL team used a design-based research approach (DBR; Wang & Hannafin, (4), 5-23, 2005). In this study context, we used Van Tiem et al.