Concepts: computer science has deep roots in mathematics and explores the fundamental heart of problem solving

Craft: as you learn computer science, you learn the most powerful skill on Earth: programming.

Algorithms: ways of solving problems and what makes certain problems hard

Representation: representing data so that computers can manipulate it

Recursion: breaking down problems into smaller, manageable pieces

Imperative programming: solving problems using constructs like loops and conditional expressions

Object-oriented programming: design patterns for starting to work on larger software projects

Software development: design, style, debugging, testing, and other core software development competencies

Android programming: working with large, complex, and unfamiliar programming environments

Really fun. It’s an ultimate mental challenge and a full left-right brain workout.

Once you get good at it, it’ll be one of your favorite things to do. And you can change the world. So there’s that.

Lectures are taught in an active learning style. We’ll spend our time reading and writing code together, just like the examples we started class with.

If you have a laptop, bring it with you. If you don’t, we’ll make accommodations.

You’ll receive credit for being in the right place at the right time and following along and participating

I will start promptly at 10AM and go until 10:50AM. You will get your money’s worth.

There will be excellent 2 and loud 3 music beforehand if you need help waking up.

Please arrive early so that you can get a seat.

Please bring a fully-charged laptop. (Even Siebel 1404 doesn’t have chargers…​)

Please be gentle with the WiFi. Our in-class activities are more important than whatever soccer match happens to be on now.

Our CS 125 homework problems are the primary way that you learn the material.

One per day from now until May.

Start them early, get help as needed, and don’t give up! The more you work at them, the more you learn.

12 weekly assessments will be quizzes, 3 will be midterms

All quizzes and midterms are worth the same, but midterms are more cumulative and cannot be dropped

Every quiz and midterm contains programming problems

The point of these assessments is to get you to do the homework

Our CS 125 Android programming assignments—known here as machine problems—are another enormous part of how you learn the material.

Start them early, get help as needed, and don’t give up! The more you work at them, the more you learn.

Lab this semester will also cover Android programming and other related topics.

There are no high-percentage exams in CS 125

You’ll do a bit each and every day

Good news: no cramming, no high-stakes assessments

Bad news: no way to save yourself if you get behind

So don’t

7 MPs 4

34,030 graded commits from 21,442 submissions

78,883 autograder runs and 105,602 test suite runs 5

406,028 failed test cases and 247,970 successful ones

711,429 added or modified lines of code 6

13,192 estimated hours spent working in IntelliJ 7

108 homework and exam programming problems

8,964 lines of testing code

26,629 hours of practice on the homework problems, including 8,967 on the ungraded practice problems

1,010,725 submissions on the quiz and homework programming problems…​

…​containing 12,585,514 (!!!) lines of non-commenting code!

Which is roughly 14,000 lines of code per student.

Many of you are beginners, but not all of you.

If you’re new and you meet someone that seems much better than you—they have probably just had more practice.

Don’t get discouraged! But the only way to catch up is to keep practicing.

You will get better. And it gets fun fast…​