1. Aschwanden, C., & Crosby, M. E. (2005). Code scanning patterns in program comprehension. In Proceedings of the 39th annual hawaii international conference on system sciences, Kauia, HI, USA.
2. Learning ecologies for technological fluency: gender and experience differences;Barron;Journal of Educational Computing Research,2004
3. Development of computational thinking skills through unplugged activities in primary school;Brackmann,2017
4. Creative computing: Scratch curriculum guide;Brennan,2014
5. New frameworks for studying and assessing the development of computational thinking;Brennan,2013