There is now an extra credit assignment that you can do, and here is how it will work.

Extra credit: Trees are easy to draw (this is a link to the PDF)

The assignment is to run through a discussion of Trees are easy to draw, filling in parts of the analysis where indicated.

NOTE: This is significantly revised from the version that I had in class on Thursday. I did not hand that one out, but a few people did take copies of it. If you took one, don’t use it, use the one that I linked to here instead. Also, I had considered making homework #9 another option for extra credit, but I have abandoned that as a possibility. If you picked one of those up, you can feel free to play with it for fun, but that’s about all.

This is due on Friday, two days after the final, by 5pm.

The way the scoring will work is as follows: I already drop your lowest homework score. Points from this will be used to replace your second-lowest homework score. There are 30 points available on this assignment, so in principle you could get more than 100% of the usual 20 points per homework. If your score exceeds 20, the additional points will be averaged into the rest of your homework score. If you already handed in BUCLD summaries, you probably already have 20 points replacing your second-lowest homework score; in that case, up to 10 points from this extra credit assignment are still available.