Big Idea 1 · Topic 1.2 · Exercise 1
Behavior Detective - The LunchDash Log
25 minutes
Back to the Topic 1.2 lessonAll CSP topics
How this page works
The writing boxes below are yours. What you type stays in this browser, is saved here as you go, and is never sent to us or to your teacher. Hand the written work in the way your teacher asked for it.
The graded check at the bottom is the part that records to your teacher's gradebook.
Part B, from your handoutNot recorded
Your handout says these are the same items available here. Part A stays on paper.
Q1 · 3 points on the handout
You now understand LunchDash from its log alone. Describe the program at BOTH CED description levels: (a) one broad sentence saying what it does; (b) a 3-4 step detailed version that says what it does AND how its statements accomplish it.
Q2 · 3 points on the handout
Classify each artifact with the precise CED term - program, code segment, or behavior: (a) the entire installed LunchDash app; (b) the 9 lines inside it that gray out a sold-out tile; (c) the sentence 'when a student taps a tile, a confirmation appears and the phone buzzes.'
Q3 · 2 points on the handout
ENRICHMENT: During row 4's idle window the app looked like it was running 'no code at all' - yet it answered the 11:00 tap instantly. Using the event-loop deep dive, explain what was actually running during those 20 minutes, and why a 'frozen' app is different from an idle one.
No graded check on this page yetNot recorded
About the line in your handout
Your handout says this exercise is available online and auto-graded. The exercise IS here, and it is the same work in the same order, but the auto-graded half is not written for this topic yet. Nothing on this page is scored or sent to your teacher.
Hand this in the way your teacher asked for it. Topic 1.1 has its graded check today, and the rest follow.