Unit 1, Day 15

Agenda

1. Warm-up: Trace It — pencil, paper, nobody runs anything
2. Trace a program that is wrong on purpose, then say exactly which line first told a lie
3. Compare and name it: Testing and Debugging
4. Discussion: Who Is This For — every program has a reader
5. Launch, day 1 of 4: The Helper Script — one real person, one repeated chore. How Marks Work says what is being judged.

Things to do before our next class

• Read The Helper Script and write down your person’s name.
• Ask them what they do now, step by step, and write down the annoying part in their words.