Meetings 26SP

Quick link to Live Python Tutor

Week 1 ¶

Wednesday ¶

• Overview slides
  • Welcome
  • Why computing (and can’t AI do it all?)
  • Support available
• Brief example: logistic map
• POGIL 1.1 together

Thursday ¶

• Lab 1
  • 1.A: “Hello, world” (print, ZyLabs workflow)
  • 1.B: Squares (input, variables)
  • 1.C: Star (turtle)

Checklist before you leave:

• Each partner has submitted a full version of each section.
• You’ve celebrated writing your (first?) interesting programs!

You might want to start on the homework too! Hints:

0. Start with something you know works… like your star.
1. pen.penup()
2. You don’t have to use forward() and right(); you can also use pen.goto()

Also finish Reading 1 and work on Forum 1 and Quiz 1 if you haven’t yet.

Friday ¶

• Lab review
• POGIL 1.2
• POGIL 1.3

Upcoming:

• Quiz 1 (survey)
• Homework 1
• Forum 1
• Reading 2 (Monday)

Week 2 ¶

Monday ¶

• Logistics reminders:
  • Reading 2 due tonight
  • Homework 1 due tomorrow (instructions and submit on ZyBooks)
  • Forum 1 due tomorrow (introduce yourselves, initial response to a video)
  • Week 1 Reflections due tonight
  • Quiz 1 (survey) should be done
• Reminder of support available
  • Study Sessions M/R 7-9pm SB337
  • In-Class Code folder on Moodle
  • CodeHelp
• Intro to retrieval practice (presentation on Moodle)
• Retrieval Quiz 2.1 (on Moodle)
• POGIL 2.1 and 2.3 (skip 2.2) in teams

Wednesday ¶

• AI policy and motivation
• Logistics reminders
  • Readings 1 and 2 should be done by now. (Did you do Participation exercises?)
  • Quiz 1 and Forum 1 should be done by now (let me know if you’ve missed)
  • Office Hours times
• Retrieval Quiz 2.2 (on Moodle)
• POGIL 2.2 in teams (15 min); if finished, review POGIL 2.1 and 2.3
• Reviewing POGIL 2.1 and 2.3 (10 min)
• Slides 2 (20 min)

Thursday ¶

Lab 2:

• 2.A: Expressions Practice
• 2.B: Number Puzzle
• 2.C: Regular n-gon
• 2.D (optional): scalable stick figure

Friday ¶

• Logistics reminders
  • Reading 3: Monday
  • Week 2 Reflections: Monday
  • Homework 2: Tuesday
  • Forum 2: initial posts due Tuesday
  • Quiz 2 next Friday
• Retrieval Quiz 2.3
• Lab review
  • Code style for number puzzle
  • ngons: how did that code work?
  • turtle.circle vs pen.circle
• Break: SIGCHI
• Slides 2
  • identity, value and type
  • int() and float()
  • binary representations
    • Python.org article on floating point
    • this is part of the useful Python tutorial
  • escape characters
  • limits of int and float

Week 3 ¶

Objectives this week:

• Main objectives
  • Distinguish sequence types from other types
  • Use and recognize string concatenation
  • Create and manipulate lists
  • Use basic list methods and functions including: append(); pop(); remove(); + for concatenation; len(); min(); max(); sum().
  • Compare and contrast string, lists, tuples vs. dictionaries
  • Create and manipulate dictionaries (add new entries, update values, remove entries)
  • Explain how numeric and string data can be represented in a machine
  • Explain how fixed-length number representations affect accuracy and precision.
  • Compare representations of integers to floating point numbers
  • Describe underflow, overflow, round off, and truncation errors in data representations.
• Others
  • Use square brackets to index into a string
  • Be able to convert numbers between base 2 (binary) and base 10 (decimal)
  • Use the math module to perform calculations

Monday ¶

• Retrieval Quiz 3.1
• Logistics reminders
  • Reading 3: tonight
  • Week 2 Reflections: tonight
  • Forum 2: initial posts due tomorrow
  • Homework 2: week from tomorrow
  • Quiz 2 Friday. Format: questions like
    1. The following code is intended to something, exactly as we did in some class/lab/homework exercise. But it does not work as intended. (1) Circle one error, (2) Describe what is wrong (in a short phrase), and (3) Rewrite the code to fix that error.
    2. Give the value of the following Python expressions when evaluated in the Shell. (If an error would occur, describe what error occurs and why.)
    3. Suppose x = some expression. Which of the following would print some value? (circle one letter)
    4. Which of the following is the best definition of term from Unit 1 or Unit 2 list of terms
    5. Fill in the blanks so that the program below prints something.
• POGIL 3 in teams
  • Model 1 (Lists, 10 min)
  • Model 2 (Sequences, 15 min)
  • Model 3 (Dictionaries, 20 min)
• Review

Wednesday ¶

• Retrieval Quiz 3.2 (and finishing 3.1 if needed)
• Logistics reminders
  • Quiz 2 IN CLASS Friday. Review the readings, POGILs, slides, retrieval quizzes, etc.
• Slides 3
  • Assignment statements vs item assignment statements

Thursday ¶

• Lab 3.A: types practice
• Lab 3.B: login id (string operations)
• Lab 3.C: sorting (list operations, algorithms)
• Lab 3.D: scores (dictionary operations)

Friday ¶

• Logistics reminders
  • see the Moodle Calendar
  • Quiz 2 IN CLASS today
  • Reflection 3 due Monday
  • Forum 2 revised posts due Tuesday
• Retrieval Quiz 3.3
• Lab code review
• Slides: data structures review; is tech neutral?
• Quiz 2

Week 4 ¶

Objectives ¶

• Recognize conditional expressions
• Use relational and equality operators
• Define and use boolean operators and expressions
• Apply precedence rules for boolean operators
• Define and use membership operators
• Define and use identity operators
• Use appropriate indentation for correct execution and clarity
• Choose appropriate conditional constructs for a given programming task.

Monday ¶

• Retrieval Quiz 4.1
• Logistics reminders
  • Reading 4: tonight
  • Reflection 3: tonight
  • Forum 2: revised posts due tomorrow
• Motivating conditional logic
• POGIL 4 in teams:
  • 10 min: Model 1 (comparison operators) you should hit 2 errors in the table
  • 15 min: Model 2 (if statements)
  • 20 min: Model 3 (boolean operations)

Section A will do some exercises based on this template, which uses the wordfreq package:

import wordfreq

words = []
for word in wordfreq.iter_wordlist('en'):
    words.append(word)
    if len(words) > 1000:
        break

longest_word = max(words, key=len)
print(longest_word)

Wednesday ¶

• Retrieval Quiz 4.2
• Logistics reminders
  • Forums: include last initials when citing
  • Homework 3 due next Tuesday (on ZyBooks)
  • Forum 3 initial posts due next Tuesday
  • Quiz 3 on Moodle any time between now and Monday noon
• Review Quiz 2
• POGIL 4 review
• Maybe: Return to Slides 3 to discuss Perspectives question
• Slides 4
  • bool type
  • if statements
  • else and elif
• Lab 4.A together

Thursday ¶

• Encouragement:
  • We’re getting into more difficult material now.
  • It’s normal to feel like you’re not getting it. Keep practicing and be patient with yourself.
  • Resources to help:
    • Study Sessions (tonight and Monday night)
    • Office hours
    • CodeHelp
  • Our World Belongs to God
  • Psalm 23:1-3
• Lab 4
  • 4A: Automobile service cost (if statements, else, elif – you’ll need all of them.)
  • 4B: Checkerboard (boolean operations, preview of functional abstraction, loops, and flag variables). Suggestion: row_is_even = ___, col_is_even = ___.
  • 4C: Zeller’s Congruence
  • 4D: Wind Chill

Friday ¶

• Retrieval Quiz 4.3
• Logistics reminders
  • Reading 5: Monday
  • Reflection 4: Monday
  • Homework 3: Tuesday
  • Forum 3: initial posts due Tuesday
  • Quiz 3 on Moodle closes before class Monday
• Lab review
• Slides and exercises
• Areas of Computing Highlight: SIGGRAPH. Video - last year video

Week 5: Looping ¶

Monday ¶

• Logistics reminders
  • Reading 5: tonight
  • Reflection 4: tonight
  • Homework 3: tomorrow
  • Forum 4: initial posts due tomorrow
  • Quiz 3 closes now end of day today
  • Quiz 4: in class on Friday
• No retrieval quiz today.
• POGIL 5 in teams
  • Model 1: for statements (15 min)
    • Report: What is x? (#6)
    • Report: What if we use [] in the loop? (#4)
  • Model 2: The range function (15 min)
    • Report: When would you use for-in-range vs for-in-list?
    • Skip 13c, it’s tricky.
    • Hint: chr(65)
  • If you’re getting ahead, you may go to Model 3: while statements, but otherwise we’ll finish these on Wednesday.
• Exercises involving loops

Wednesday ¶

• Retrieval Quiz 5.2
• chr(65) reminds me of the Unicode Slide Show
• Optional Scripture: Genesis 1 (slide)
• Logistics reminders
  • Quiz 4 in class on Friday
  • Forum 4 revised posts due next Tuesday
    • Reminder to cite other students. Cite different people than Forum 2.
    • Use paragraphs to organize your thoughts.
    • Use last initials (at least) when citing other students.
  • Homework 4 due the following Tuesday
• POGIL 5.3 (while statements) (15 min)
  • Review the Teacher version if you finish early; start writing Week 5 Reflections.
• Slides and exercises
• Intro to Homework 4
• If time: Lab 5.A together

Study strategies we discussed together:

• Retrieval quizzes (emphasize questions you missed)
• POGIL: start with blank ones, check if you can answer the questions easily
• ZyBooks: retry Participation exercises, try the Challenge problems
• Study Sessions (M/R 7-9pm SB337)
• Slides: we don’t always go through every exercise in the slides, so focus on the ones we didn’t do, as additional practice
• Labs: pick a few, try to re-do them from scratch on your own
• Office hours

Overall:

• Study together
• familiarity != understanding - just because it looks familiar doesn’t mean you can do it on your own.

Thursday ¶

Lab 5

• 5A: range practice
• 5B: Hailstone (while loop, if statements)
• 5C: Binary (while loop, accumulator pattern)
• 5D: Spirograph

optional labs:

• 5E: sum of numbers in range (accumulator pattern)
• 5F: cumulative sum (accumulator pattern again!)

Friday ¶

• Retrieval Quiz 5.3
• Logistics reminders
  • Reading 6: Monday
  • Reflection 5: Monday
  • Forum 4: revised posts due Tuesday
  • Homework 4: week after Tuesday
  • Quiz 4: in class today
• Lab review
• Slides and exercises
• Quiz 4

Week 6: Functions ¶

Monday ¶

• Retrieval Quiz 6.1
• Logistics reminders
  • Reading 6: tonight
  • Reflection 5: tonight
  • Homework 3 should have been due last Tuesday but was accidentally marked “optional” on ZyBooks; bumped to tomorrow
  • Homework 4: week after tomorrow
  • Forum 3: revised posts due tomorrow
  • Quiz 5 on Moodle this weekend
• Demo of functions: turtle graphics (shapes, click handlers)
• POGIL 6 in teams (refer to POGIL 6 code)
  • Model 1: Flow of Execution (20 min)
    • Don’t worry about “drawing” on your PDF (questions 8 and 12)
    • To convert a string x to a list, use list(x)
  • Model 2: Passing Arguments (15 min)
  • Model 3: Returning Values (10 min)

Wednesday ¶

• Retrieval Quiz 6.2
• Logistics reminders
  • Quiz 5: on Moodle, opens Friday, closes Monday before class
  • Homework 4: due next Tuesday
  • Forum 4: initial posts due next Tuesday
• POGIL 6.3 in teams (15 min)
  • Model 3: Returning Values
  • If you finish early, review the Teacher version
• Slides 6
• Lab 6.A together

Thursday ¶

• Review local vs global scope from Slides 6
• Lab 6
  • 6A: functions practice
  • 6B: search
  • 6C: unique

If you finish early, you can:

• Do the optional labs from last week
• Try this drawing lab.
• Extend the checkerboard lab so that the user can click on a square to change its color.

Friday ¶

• Retrieval Quiz 6.3
• Logistics reminders
  • Quiz 5: on Moodle, closes before class Monday
  • Reading 7: Monday
  • Reflection 6: Monday
  • Homework 4: Tuesday
  • Forum 6: initial posts due Tuesday
• Go over Quiz 4
• Lab review: compare lab 6 code with someone you didn’t work with.
  • What was challenging?
  • What was the point of get_unique_words?
  • Try it out with some text files of your own.
• Slides and exercises

Week 7: Sequence Data ¶

Monday ¶

• Logistics reminders
  • Quiz 5: on Moodle, closes this evening
  • Reading 7: tonight
  • Reflection 6: tonight
  • Homework 4: tomorrow
  • Forum 6: initial posts due tomorrow
  • Lab 7: Thursday
  • Quiz 6: in class Friday
• Retrieval Quiz 7.1
• POGIL 7 in teams
  • Model 1: Working with Lists (15 min) expect 3 errors in the table
  • Model 2: Indexing and Slicing (15 min) expect 1 error in the table
  • Model 3: Common String Methods (15 min) expect 1 error in the table
• Review Slides 6, if time permits

Wednesday ¶

• Retrieval Quiz 7.2
• Logistics reminders because next week is Spring Break
  • Quiz 6: in class Friday
  • Lab 7 this Thursday
  • Forum 6: revised posts due Tuesday after Spring Break
  • Reading 8: Monday after Spring Break
  • Reflection 7: Monday after Spring Break
• Go over Quiz 5
• Homework 4 samples
• Lab exercises
  • Lab 6D (Longest)
  • Start Lab 7

Thursday ¶

Lab 7

• 7A: strings practice (name format)
• 7B: SSN validation
• 7C: password validation
• 7D: max so far

Friday ¶

• Retrieval Quiz 7.3
• Logistics reminders
  • Quiz 6: in class today
  • Forum 6: revised posts due Tuesday after Spring Break
  • Reading 8: Monday after Spring Break
  • Reflection 7: Monday after Spring Break
• Lab review
• Slides and exercises
• Quiz 6

Week 8: Object-Oriented Programming (Classes) ¶

Monday ¶

Welcome back from Spring Break!

• Retrieval Quiz 8.1
• Logistics reminders
  • Reading 8: tonight
  • Reflection 7: tonight
  • Forum 6: revised posts due Tuesday
  • Forum 8: initial posts due next Tuesday
  • Quiz 7: on Moodle this weekend
• Intro to Object-Oriented Programming
• POGIL 8 in teams
  • Model 1: Attributes and Methods (15 min)
  • Model 2: Constructors (15 min)
  • Model 3: Object-Oriented (15 min)

Has anyone started on Homework 5? We might replace it with a different assignment.

Wednesday ¶

• Retrieval Quiz 8.2
• Logistics reminders
  • Quiz 7 on Moodle, opens Friday, closes Monday
  • Forum 8: initial posts due next Tuesday
  • First project milestone due next Saturday
  • Invitation to discuss project ideas with me.
• Go over Quiz 6
• Finish POGIL 8 if needed
• Slides and exercises

Thursday ¶

Lab 8

• 8A: Class practice (Food items)
• 8B: Particle simulation

If you’re done early, work on Homework 5, which is due next week.

Friday ¶

• Retrieval Quiz 8.3
• Logistics reminders
  • Quiz 7 on Moodle, closes Monday
  • Forum 8: initial posts due Tuesday
  • Homework 5: due this coming Tuesday
  • First project milestone due a week from Saturday
• Lab review
  • Spot-the-bug
  • callable things: functions, classes, and methods (and how calling a class is sorta like calling its constructor but not exactly)
• Slides and exercises

Week 9: More on Classes ¶

Monday ¶

• Logistics reminders
  • Quiz 7: on Moodle, closes today
  • Forum 8: initial posts due tomorrow
  • Homework 5: due tomorrow
  • First project milestone due this Saturday
• Retrieval Quiz 9.1
• Some topics on classes (see slides)
  • Operator overloading (__str__, __eq__, etc.)
  • Private vs public attributes (convention of underscore prefix)
  • Invariants and encapsulation
  • __name__ == "__main__" idiom
• Special topics demos (for projects)
  • LLMs
  • Brython
  • Using a class to manage game state

Optional: Google Colab examples: overview, charts, Gemini (LLM) integration, simple LLM examples, histogram

Friday ¶

• NO Retrieval Quiz today
• Logistics reminders
  • Reading 10: Monday
  • no reflection for this week (short week)
  • Quiz 8 in class today
  • Forum 8: revised posts due Tuesday
  • Homework 6 due a week from Tuesday
  • First project milestone due tomorrow
• Sharing project ideas
• Exercises with classes as needed
• Quiz 8 (through classes and objects, not including special topics)

Week 10: Web and GUI part 1 ¶

Monday ¶

• Retrieval Quiz 10.1
• Logistics reminders
  • Reading 10: tonight
  • no quiz this weekend (Easter break)
  • Homework 6: due Tuesday after Easter break
• Slides
  • links:
  • “Edit this text:” https://www.programiz.com/html/online-compiler/
  • “Add some tags:” https://www.w3schools.com/tags/ref_byfunc.asp
    • Some things to try:
      • Add another paragraph
      • Add a <button> element (don’t hook it up to do anything yet, just add it to the page)
      • Add an <input> element (again, no need to make it do anything yet)
      • Add some other interesting elements (see link above, or MDN)
• Exercise with Brython

Brython starter template (in Thonny, save as a demo.html file (turn on “All files” in the save dialog so it doesn’t call it demo.html.py) and open in a web browser):

<head>
  <!-- 1. Load the interpreter -->
  <script src="https://cdn.jsdelivr.net/npm/brython@3/brython.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/brython@3/brython_stdlib.js"></script>
</head>

<!-- 2. Start Brython when page loads -->
<body onload="brython()">

  <p id="output">Hello!</p>

  <!-- 3. Write Python here -->
  <script type="text/python">
from browser import document, html
document["output"].text = "Hello from Python!"
  </script>
</body>

Wednesday ¶

• Retrieval Quiz 10.2
• Logistics reminders
  • Homework 6: due Tuesday after Easter break
  • no quiz this weekend (Easter break), but yes next Friday.
  • Forum 10 revised posts due Tuesday after Easter break
  • Project Milestone 2 combined with Milestone 3, due a week from Saturday
• Go over Quiz 8
• Continue with web programming and Brython exercises

Thursday ¶

• Lab 10A: Basic Messaging App with Brython
• Lab 10B: Breakout Game with Brython and HTMLCanvas

Note: lab is not due until Tuesday after break.

Friday ¶

Good Friday break, no class.

Week 11: Nested Structures and Web and GUI part 2 ¶

Monday ¶

Easter Monday break, no class.

Wednesday ¶

• Retrieval Quiz 11.1
• Logistics reminders
  • Homework 6: due yesterday but ZyBooks problem means extended to today.
  • Forum 10: revised posts were due yesterday
  • Project Milestone 2 (combined with previous Milestone 3) due Saturday
• POGIL 11 in teams: Nested Structures
  • Model 1: Lists of Lists (15 min)
  • Model 2: Nested for Loops (15 min)
  • Model 3: Nested Dictionaries (15 min)
• Intro to image processing
  • color picker
  • image color picker

Thursday ¶

• Image Processing Lab

Friday ¶

• Retrieval Quiz 11.2
• Logistics reminders
  • Quiz 9: Moodle this weekend. Opens today, closes Monday
  • Project Milestone 2 (combined with previous Milestone 3) due Saturday
  • Reading 12: Monday
  • Homework 7 (Brython particle simulation) due Tuesday
  • Forum 10 revised posts were due earlier this week (sorry I didn’t remind you about that)
  • break from Forum this week.
• Lab review
• Neighbors / edges

def detect_edges(image):
    """
    Highlights edges in the image using a 3x3 convolution kernel.
    Kernel:
    -1 -1 -1
    -1  8 -1
    -1 -1 -1
    """