“…In 12 studies the impact of CD on teachers' intended or actual use of technology was described. The prerequisite conditions that were perceived as barriers, according to these studies, were: lack of access to good quality technological materials (Awang et al, 2018;Bingimlas, 2017;González-Carriedo & Esprivalo Harrel, 2018;Jones, 2017;Tonui et al, 2016), time (Bingimlas, 2017;Frazier et al, 2019;González-Carriedo & Esprivalo Harrel, 2018;Jones, 2017;So et al, 2014, Vatanartiran & Karadeniz, 2015, unavailability of ready-made assignments that describe how teachers should use technology in their teaching (Norris et al, 2015;Vatanartiran & Karadeniz, 2015), insufficient training on how to implement technology (Frazier et al, 2019;Tonui et al, 2016;Uluyol & Şahin, 2016), and lack of technical support .…”