Welcome to CSE 121: Introduction to Computer Programming I!🎉

What is this class? What will I learn?

Computing continues to play an ever-increasing role in today’s society. Having an understanding of computing is an essential skill for those in the 21st century; from working in industries more reliant on technology, using computational methods to further scientific understanding, or being an informed citizen in a world with technology all around us.

This course is a first course in computer programming focused on the basics of procedural programming in Java. It assumes students have not taken a previous programming course and do not have substantial other programming experience. (Students with previous experience are encouraged to consider CSE 122.)

Prior Experience and Expectations

This course is intended for students who have no or very little previous programming experience. CSE 121 will teach the fundamentals of programming in Java from the very beginning. If you have previous programming experience in any text-based programming language (Java, Python, Javascript, etc.), you may find that CSE 122 or another course is a better fit for you.

To help assess if CSE 121 is the right class for you, the Allen School has developed a Self-Guided Placement to help students assess which intro course is the right one for them to enroll in. Please see this website for more information on who to contact if you have questions about which introductory CSE course is the right course for you.

Feedback

Feedback is always welcome! You can contact the the course staff or submit anonymous feedback.

If you want to learn more about the course and its policies, please check out our course syllabus.

Registration

Do not email the course staff or instructors requesting an add code for this course– the course staff do not have add codes. Please contact the CSE advising team at ugrad-adviser@cs.washington.edu for registration assistance.

Announcements

Nov 29

Dealing with snow (11/29) ❄️❄️

It’s snowing! Here’s what that means for us.

See the full announcement on Ed!
Nov 28

Resubmission Form 6

Resubmission Cycle 6 is now open.

See the full announcement on Ed!
Nov 28

Brett's Office Hours CANCELLED today (11/28)

Brett will not have office hours today due to travel.

See the full announcement on Ed!

All Announcements

Calendar

Info

This is a rough sketch of the quarter and things are subject to change. We can accurately predict the past, but predicting the future is hard!

Pre-class Work

Anything listed in the “Pre-Class” materials for a day should be read before attending class that day. The pre-class work is a first introduction to the most important terms and concepts for that day of class. It is okay if the pre-class work doesn’t make complete sense as we have the rest of the class day to clarify the concepts, but if you don’t do the pre-class work the class session won’t make any sense.

Topic Programming / Creative Projects
Week 0 - Welcome; Hello, World
Wed 09/28
LES 00 Welcome; Course Policies

Note: Normally you would complete the Lesson reading portion before class. There is nothing you need to complete before class today!

in-class: pdf pptx
resources:
Thu 09/29
SEC 00 Introductions
Fri 09/30
LES 01 Printing; Turtle basics
pre-class: materials
in-class: materials
resources:
Extra resources
Released
C0
Hello World/Turtle Drawing
I.S. by 11:59 pm
Week 1 - Types, Expressions, Variables
Mon 10/03
Tue 10/04
SEC 01 Printing; Turtles
resources: materials
Wed 10/05
LES 02 Datatypes; Expressions
pre-class: materials
in-class: materials pdf pptx
resources:
Thu 10/06
SEC 02 Types; Expressions
resources: materials
Released
P0
Code Reviews
I.S. by 11:59 pm
Fri 10/07
LES 03 Variables; Strings; Debugging
pre-class: materials
in-class: materials pdf pptx
resources:
Week 2 - for loops
Mon 10/10
Tue 10/11
SEC 03 Variables; Strings
resources: materials
Wed 10/12
LES 04 for loops
pre-class: materials
in-class: materials
resources:
Extra resources
Released
C1
Drawing Shapes
I.S. by 11:59 pm
Thu 10/13
SEC 04 for loops
resources: materials
Fri 10/14
LES 05 Nested for loops; Random
pre-class: materials
in-class: materials
resources:
Week 3 - Methods
Mon 10/17
Tue 10/18
SEC 05 Nested for loops and Random
resources: materials
Wed 10/19
LES 06 Methods
pre-class: materials
in-class: materials
resources:
Released
P1
Election Simulator
I.S. by 11:59 pm
Thu 10/20
QUIZ 00 Quiz 0 - Printing, Expressions, for loops, Random
Fri 10/21
LES 07 Parameters
pre-class: materials
in-class: materials
resources:
Week 4 - Conditionals
Mon 10/24
Tue 10/25
SEC 07 Methods; Parameters
resources: materials
Wed 10/26
LES 08 Return values
pre-class: materials
in-class: materials
resources:
Thu 10/27
SEC 08 Return values
resources: materials
Fri 10/28
LES 09 Conditionals
pre-class: materials
in-class: materials
resources:
Week 5 - Interaction
Mon 10/31
Tue 11/01
SEC 09 Conditionals
resources: materials
Wed 11/02
LES 10 while loops
pre-class: materials
in-class: materials
resources:
Released
C2
Parameterized Shapes
I.S. by 11:59 pm
Thu 11/03
QUIZ 01 Quiz 1 - Methods, conditionals
Fri 11/04
LES 11 User input (Scanner)
pre-class: materials
resources:
Week 6 - Mid-quarter reflection
Mon 11/07
Tue 11/08
SEC 11 while loops; User input (Scanner)
resources: materials
Wed 11/09
LES 12 Putting it all together
in-class: materials
resources:
Released
P2
Prioritizing Patients
I.S. by 11:59 pm
Thu 11/10
SEC 12 TA Choice
Fri 11/11
HOLIDAY Veterans Day
Week 7 - File input/output
Mon 11/14
Tue 11/15
SEC XX Quiz Review/Prep
Wed 11/16
LES 13 File input/output
pre-class: materials
in-class: materials
resources:
Released
C3
Drawing from Files
I.S. by 11:59 pm
Thu 11/17
QUIZ 02 Quiz 2 - while loops, user input
Fri 11/18
LES 14 File input/output (cont.)
pre-class: materials
in-class: materials
resources:
Week 8 - Holiday
Mon 11/21
Tue 11/22
HOLIDAY No Class
Wed 11/23
HOLIDAY No Class
Thu 11/24
HOLIDAY Thanksgiving
Fri 11/25
HOLIDAY Native American Heritage Day (observed)
Week 9 - Arrays
Mon 11/28
Tue 11/29
SEC 14 File input/output
resources: materials
Wed 11/30
LES 15 Arrays
pre-class: materials
in-class: materials
resources:
Released
P3
It's Data Time!
I.S. by 11:59 pm
Thu 12/01
SEC 15 Arrays
resources: materials
Fri 12/02
LES 16 Reference semantics
pre-class: materials
in-class: materials
resources:
Week 10 - Review and Next Steps
Mon 12/05
Tue 12/06
SEC 16 Reference semantics
Wed 12/07
LES 17 Array patterns
pre-class: materials
in-class: materials
resources:
Thu 12/08
SEC 17 Final exam review; Wrap-up
Fri 12/09
LES 18 Wrap-up; Victory lap
pre-class: materials
in-class: pdf pptx
resources: grade checker
Week 11 - Finals Week
Mon 12/12
Tue 12/13
Wed 12/14
EXAM Final Exam (12:30-2:20pm)
Thu 12/15