100 minutes

open books and open notes

material and 
interpreters in first 3 chapters of text book
and in mp 1 through mp 5

Fort example:
the elevation approach -> structure-shy programming
class dictionaries (design, parsing, printing, LL(1) conditions)
from A to B traversal semantics (where not to traverse).
  How to program traversals manually.
visitors in DJ and DemeterJ and how to program them manually.

small changes to interpreters in Scheme and in Java