CS 111: Introduction to Computer Science

Fall 2026

Instructors:

Section 1 (Online) - Tom Stephens (email: tstephen@cs.byu.edu)
- Office Hours: Drop by any time or schedule a time: https://calendly.com/byu-cs-tstephen/office-hours
Section 2 (MW 8:00-9:15am, ESC C215) - Steve Giles (email: steven.giles@byu.edu)
Section 3 (MW 11:00am-12:15pm, JKB 2113) - Steve Richardson (email: srichardson@byu.edu)
- Office Hours in 3372 TMCB: times TBD, or by appointment (send me an email)
Sections 4 (MW 12:30-1:45pm, TMCB 1170) & 5 (MW 2:00-3:15pm, CB 381) - Michael Reynolds (email: mtr26@byu.edu)
Section 6 (MW 5:30-6:45pm, HBLL 3718) - Andrew Cluff (email: andrew_cluff@byu.edu)

Students from Fall 2025 or Earlier
If you are viewing this site to look at the prior forms of the assignments, please head to the course archives to find the content. This website no longer links to all of those assignments directly.

Week's Lecture Topics & Slides	Date	Readings	Lab Links	Homework & Project Due Dates / Test Dates
Week 1
	Mon Aug 31
	Tue Sep 1
Lecture 0 - Course Introduction	Wed Sep 2	How to Navigate Canvas / Gradescope Syllabus Reading Quiz Disabling AI Tools	First Day of Classes
	Thu Sep 3		Getting Started and Python Setup Lab
	Fri Sep 4
Week 2
	Mon Sep 7	Labor Day Holiday
	Tue Sep 8		Booleans and Conditionals Lab While Loops Lab Functions Lab
Lecture 1 - Computational Thinking & Writing Quality Code	Wed Sep 9	Code Quality Guidelines List Basics Reading Quiz Strings Reading Quiz File I/O Reading Quiz For Loops Reading Quiz Free Coding Project - Overview	University Add/Drop Deadline	Homework 00 - Pizza!
	Thu Sep 10		List Basics Lab Strings Lab File I/O Lab For Loops Lab
	Fri Sep 11
Week 3
Lecture 2 - Errors & Introduction to Testing (why, TDD)	Mon Sep 14	Slicing Reading Quiz Errors Reading Quiz Testing Intro Reading Quiz
	Tue Sep 15		Slicing Lab Errors Lab
Lecture 3 - Environments and Debugging	Wed Sep 16	Debugging Reading Quiz
	Thu Sep 17		Debugging Lab
	Fri Sep 18			Homework 01 - College Admissions Algorithms
Week 4
Lecture 4 - Testing and Writing Tests	Mon Sep 21	pytest Reading Quiz doctest Reading Quiz
	Tue Sep 22		pytest Lab doctest Lab
Lecture 5 - Strings, Lists, Dictionaries & Tuples, Slicing & Comprehensions	Wed Sep 23	Dictionaries Reading Quiz Tuples Reading Quiz Comprehensions Reading Quiz
	Thu Sep 24		Dictionaries Lab Tuples Lab Comprehensions Lab
	Fri Sep 25			Progress Check 1
Week 5
Lecture 6 - Images	Mon Sep 28	Images Reading Quiz Docstrings Reading Quiz Type Hinting Reading Quiz Hover Hinting Reading Quiz
	Tue Sep 29		Images Lab Hover Hinting Lab
Lecture 7 - Abstraction & Command Line Arguments	Wed Sep 30	Abstraction Reading Quiz Command Line Arguments Reading Quiz		Homework 02 - Image Manipulation
	Thu Oct 1		Command Line Arguments Lab	Exam 1
	Fri Oct 2			Exam 1
Week 6
Lecture 8 - Big O, Algorithm Analysis, Data Structures	Mon Oct 5	Big O Reading Quiz
	Tue Oct 6
Lecture 9 - Object Oriented Programming & Class Design	Wed Oct 7	OOP Reading Quiz Classes Reading Quiz		Project 01 - Image Processing
	Thu Oct 8		Classes Lab
	Fri Oct 9			Free Coding Project - Proposal
Week 7
Lecture 10 - Inheritance & Interfaces	Mon Oct 12	Inheritance Reading Quiz Interfaces Reading Quiz
	Tue Oct 13		Inheritance Lab Interfaces Lab
Lecture 11 - Dunder Functions & Polymorphism	Wed Oct 14	Dunder Functions Reading Quiz Polymorphism Reading Quiz		Homework 03 - The Grid Class
	Thu Oct 15		Dunder Functions Lab Polymorphism Lab
	Fri Oct 16
Week 8
Lecture 12 - Modularity, Modular Design & Random Numbers	Mon Oct 19	Random Numbers Reading Quiz
	Tue Oct 20		Random Numbers Lab
Lecture 13 - Lambda Expressions & Higher Order Functions	Wed Oct 21	Lambda Functions Reading Quiz Higher Order Functions Reading Quiz		Project 02 - Falling Sand Simulation
	Thu Oct 22		Lambda Functions Lab Higher Order Functions Lab
	Fri Oct 23			Progress Check 2
Week 9
Lecture 14 - Composition, Decorators, & Mutability	Mon Oct 26	Decorators Reading Quiz
	Tue Oct 27		Decorators Lab
Lecture 15 - Recursion	Wed Oct 28	Recursion Reading Quiz Review Syllabus Reading Quiz
	Thu Oct 29		Recursion Lab	Exam 2
	Fri Oct 30			Exam 2
Week 10
Lecture 16 - Linked Lists	Mon Nov 2	Linked Lists Reading Quiz
	Tue Nov 3		Linked Lists Lab
Lecture 17 - Tree Recursion	Wed Nov 4	Tree Recursion Reading Quiz Merge Sort Reading Quiz
	Thu Nov 5		Tree Recursion Lab
	Fri Nov 6
Week 11
Lecture 18 - Trees	Mon Nov 9	Trees Reading Quiz
	Tue Nov 10		Trees Lab
Lecture 19 - Backtracking	Wed Nov 11	Backtracking Reading Quiz		Homework 04 - Merge Sort
	Thu Nov 12		Backtracking Lab
	Fri Nov 13			Progress Check 3
Week 12
Lecture 20 - Programming Languages & Regular Expressions	Mon Nov 16	Regex Reading Quiz
	Tue Nov 17		Regex Lab
Lecture 21 - HTML, Requests, and Beautiful Soup	Wed Nov 18	Intro to WWW Reading Quiz HTML Tags and Attributes Reading Quiz		Project 03 - Recursive Backtrace Mazes
	Thu Nov 19		HTML Tags and Attributes Lab	Exam 3
	Fri Nov 20			Exam 3 Free Coding Project - Implementation
Week 13
Lecture 22 - Hyperlinks and robots.txt	Mon Nov 23	Hyperlinks Reading Quiz robots.txt Reading Quiz
	Tue Nov 24	Withdrawal Deadline	Hyperlinks Lab
	Wed Nov 25	Thanksgiving Holiday
	Thu Nov 26
	Fri Nov 27
Week 14
Lecture 23 - Web Scraping	Mon Nov 30	Web Scraping Reading Quiz		Homework 05 - Robots
	Tue Dec 1		Web Scraping Lab
Lecture 24 - Data Visualization	Wed Dec 2	Data Visualization Reading Quiz
	Thu Dec 3		Data Visualization Lab	Progress Check 4
	Fri Dec 4			Project 04 - Webcrawler
Week 15
Lecture 25 - Conclusion	Mon Dec 7			Exam 4
	Tue Dec 8			Exam 4
	Wed Dec 9			Exam 4
	Thu Dec 10	Last Day of Classes		Exam 4 Free Coding Project - Reflection
	Fri Dec 11	Exam Prep Day / Reading Day
	Sat Dec 12	Finals Week
Week 16
	Mon Dec 14	Finals Week
	Tue Dec 15
	Wed Dec 16
	Thu Dec 17
	Fri Dec 18