1. Alexopoulou, E., & Kynigos, C. (2008). Half- baked games as a context for understanding conditional constructs. Retrieved from http://www.etpe.gr/files/proceedings/21/1223368001_DIDINFO08_71_80.pdf
2. Alimisi, R., Tsalapatas, H., Tallvid, K., Larsson, S. O., Protivova, Z., & Karagiannis, H. …Heidmann, E. (2010). Evaluation activities mid-term progress report. Retrieved from http://ohmpro.org/envkids/documents/VR_502390-2009-COMENIUS.pdf
3. Alimisi, R., & Winters, N. (2010, August 16-20). Programming playfully for a real- life problem: conditional statements on the stage of Scratch. In Proceedings of the International Conference on Constructionism, Paris, France.
4. The Emanuel Miller Memorial Lecture 1990 Cooperative Learning in Classrooms: Processes and Outcomes