Merge branch 'pryor'

diff --cc assignment2.mdwn
Simple merge

diff --cc index.mdwn
index 6409b7b,aeb0564..46f6b74
--- 1/index.mdwn
--- 2/index.mdwn
+++ b/index.mdwn
@@@ -16,15 -16,13 +16,16 @@@ Student sessions will be held on Tuesda
  
  Lots of lecture notes summarizing and expanding on last Monday's seminar now posted. Also, lecture notes for upcoming session have been posted. (Click "Notes and Schedule".)
  
 -## Assignments ##
 +## Lecture Notes and Assignments ##
  
 -[[Assignment1]]
 +Lecture notes for [[Week1]]; [[Assignment1]].
  
 -[[Assignment2]]
 +Lecture notes for [[Week2]]; [[Assignment2]].
 +
 +There is now a [lambda evaluator](lambda-let.html) you can use in your browser (no need to install any software).
 +It can help you check whether your answer to some of the homework questions works correctly.
  
+ [Lambda Calculator](/lambda-let.html)
  
  ##[[Notes and Schedule]]##