Overview

• Preliminaries.
  • Admin.
  • Questions.
  • Pre-quiz questions.
  • Quiz!
• Hacking 2048.
• About the final.
• Short discussion of exam 3.
• Some questions about the course.

Preliminaries

Admin

• Cookies! (And some gifts from TN.)
• You should have received a prospective grade sheet.
  • Your grade cannot go down from that grade.
  • Let me know questions and concerns.

Extra Credit

• Improv at a time to be improvised. CS will email you.
• Neverland study break Tuesday the 13th at 9 or something.

Questions

Quiz!

1. Write a definition for the map procedure [5 points]

   (define map
     (lambda (fun lst)
       (if (null? lst)
           null
           (cons (fun (car lst)) (map fun (cdr lst))))))
   

2. Write a function, squares, that, given n, computes the list (1 4 9 16 ... n^2) [5 points]

   > (squares 5)
   '(1 4 9 16 25)
   > (squares 0)
   '()
   > (squares 3)
   '(1 4 9)
   
   
   (define squares
     (lambda (n)
       (map square (cdr (iota (+ n 1))))))
   

Hacking 2048

About the final

• In class.
• Written - Kind of like a really big quiz.
  • No computer.
• Four problems. Four mostly correct: A. Three mostly correct: B. Two mostly correct: C. One mostly correct: D. Here: F.
• One sheet of notes. 8.5x11 inches double sided. Can be typed.
  • Important learning comes from doing a review sheet.
• 9 am or 2pm Tuesday.
  
  • May be in 3815.
• Difficulty somewhere around the normal exam problems (i.e., a hard quiz)
  • Some code writing
  • Some code reading
• Sam should send out a sample exam (and will do so tonight).
• Cumulative, but emphasis on recent things
  • Object problem
  • Sorting or searching problem
  • Higher-order procedures
  • Lists or trees or ...
  • NO FILES
• Strategies for reviewing
  • Look at recent labs, particularly the extras
  • Design a few problems of your own
  • Read the code from readings
  • Make a list of the "most important" learning outcomes from this course (at least in terms of Scheme/programming)

Short discussion of exam 3

Some questions about the course

Something I should do differently/better in the fall * Respond more to labs. * Generally not enthusiastic about switching to "what were the big ideas of this lab" writeups, which were recommended by 207. * Do more physical demonstrations of algorithms * Optional "flipped" videos? Good for some, worry about work with others. Watch someone write the code. Talk about some of the small parts. * Don't force partners. Many people will learn more doing it on their own. * Distribute virtual machines earlier. * Focus on lab time. * Exams were challenging; maybe twice as many half as long?