... About ATNF overview . ... The case study is of an attempt to teach the theory of solar system formation, using a competitive role-playing exercise, during lectures. The aim of this exercise was to attempt to get every student in the class to actively think through what they were learning, right there in the lecture. ... Once the exercise was completed, students were given the full set of seven briefing papers, and required to write-up the full theory of solar system formation as an assignment. ...