CS173: Intro to Computer Science - Conditionals

Activity Goals

The goals of this activity are:
  1. To be able to write an if statement
  2. To be able to write an else statement
  3. To design boolean expressions for conditionals
  4. To implement complex conditional statements using boolean expression operators

Supplemental Reading

Feel free to visit these resources for supplemental background reading material.

The Activity

Directions

Consider the activity models and answer the questions provided. First reflect on these questions on your own briefly, before discussing and comparing your thoughts with your group. Appoint one member of your group to take notes for the group, and appoint another member to discuss your findings with the class. After class, think about the questions in the reflective prompt and respond to those individually. Report out on areas of disagreement or items for which you and your group identified alternative approaches. Write down and report out questions you encountered along the way for group discussion.

Model 1: Conditionals for Selective Execution with if Statements

Questions

  1. Try running the above program for different ages (say, 18, 34, 35, and 36).

Embedded Code Environment

You can try out some code examples in this embedded development environment! To share this with someone else, first have one member of your group make a small change to the file, then click "Open in Repl.it". Log into your Repl.it account (or create one if needed), and click the "Share" button at the top right. Note that some embedded Repl.it projects have multiple source files; you can see those by clicking the file icon on the left navigation bar of the embedded code frame. Share the link that opens up with your group members. Remember only to do this for partner/group activities!

Model 2: Conditionals for Selective Execution with if/else Statements

Questions

  1. Write and execute an if/else statement that determines if it is warm and not raining outside, and prints out whether or not it is appropriate to go outside.

Submission

Submit your answers to the questions using the Collaborative Spaces section of OneNote. You can add a page with your name and your group members' names, and today's date, as the title. Under the appropriate section (i.e., "Class Notes", "Collaborative Spaces", "Reflective Prompts") that you can select on the left side of the screen, you can click "Add Page" on the right side. You can answer any reflective prompt questions in the Reflective Journal section of your OneNote Classroom personal section.

For Additional Practice

Feel free to visit these resources for additional practice exercises.