What are convincing examples of ontological innovations in design-based research apart from the ones that diSessa and Cobb give?

diSessa and Cobb (2004, JLS) mention metarepresentational competence and sociomathematical norms. Mor and Winters (2007) mention design patterns, Sandoval (2004) gives a brief example. But what...

04 January 2013 2,849 2 View