I'm a little distant from my first Calculus class with Dr. Wall (at UT Austin). It started, as I recall, with going through the obvious in a slow walk of how one might calculate the area under the line 1/x. Taking the walk from where physics was before the paper of Oppenheimer and his student demonstrating the necessity for black holes would also seem to promise a transforming exercise in understanding physics. Freeman Dyson would seem to recommend Reappraising Oppenheimer: Centennial Studies and Reflections, edited by Cathryn Carson and David Hollinger which has a chapter on the paper.