Big mistake giving out the grade assignment and asking to turn it into a login assignment. DOH! There are so many unintended consequences! it is better to hand out a complex chapter with bits and pieces scattered through out and have the students construct the application by typing in little snippets of code and getting them right – working through little issues that naturally come up.
Far more learning happens as students attempt something and backtrack and re-read/re-attempt stuff.
The next 539 assignment will be different. I have to send a note to my future self to make sure I don’t make this mistake over and over each semester.

This is a keynote at the Google I/O developers conference by Marissa Mayer, VP of Search and User Experience. I was there at Google I/O and really loved the talk:
Keynote: Imagination, Immediacy, and Innovation… and a little glimpse under the hood at Google
She talks about user studies and the design of the search page – seemingly simply stuff – but a lot of thought goes into things.