1. Smart Learning Institute, Beijing Normal University, Beijing, People’s Republic of China
2. Research Institute for Innovation & Technology in Education (UNIR iTED), Universidad Internacional de La Rioja (UNIR), Logroño, Spain
3. Engineering, Universidad Católica de Oriente, Rionegro, Colombia
4. SLIBNU-ALECSO Smart Education Joint Lab, Smart Learning Institute Beijing Normal University, Beijing, People’s Republic of China
5. College of Information, University of North Texas, Denton, USA