Lessons > 11. Conditional Execution & Boolean Logic
In this lesson, we’re going to go over conditional logic, which will allow you to write programs that have different outcomes depending on the data, events, and/or user interactions that take place as your program executes. This is often referred to as your program’s “state.” Specifically, we’ll cover: (a) if, if/else, if/elif…/else statements, (b) comparison operators, (c) truth tables, and (d) scenarios where you might want to use if/elif/else statements.
Today's Activities
For today, please do the following:
1. Download the Exercise Files
Exercise Files2. Review the Slides
3. Watch the Lecture Video(s)
| Link | Title | Type | Duration |
|---|---|---|---|
| Video 1 | Intro to conditionals | pre-recorded | 9:20 |
| Video 2 | If and else | pre-recorded | 15:03 |
| Video 3 | Elif | pre-recorded | 11:06 |
| Video 4 | Logical operators and Truth Tables | pre-recorded | 22:49 |
| Video 5 | Practice with conditional statements | lecture | 52:07 |
4. Review / Study the Supplemental Materials
Note: these readings / videos are suggested for additional context / examples, but not required.
-
Severance
Ch3: Conditionals.
reading • video - Ch5: Conditionals. ThinkCS
5. Take the Practice (Ungraded) Quiz
Note: The quiz is to help you test your own understanding
of the concepts. It is not graded, and is designed to help you to see
what you already know and what you should review / ask about.
https://canvas.northwestern.edu/courses/149580/quizzes/159807