I really like this definition of Digital Citizenship by Terry Heick. His less wordy version of the definition for students is particularly good and I will certainly be using this and the Digital Citizenship infographic by Mia MacMeekin with my students in Retech (Research and Technology) classes.
Heick’s student definition of Digital Citizenship is “the self-monitored habits that sustain and improve the digital communities you enjoy or depend on” (2013).
Heick, T. (2013, November 20). The Definition Of Digital Citizenship. Fluency21 Committed Sardine Blog. Retrieved November 22, 2013, from http://fluency21.com/blog/2013/11/20/the-definition-of-digital-citizenship/