AP CSP 3.9 Exercise 2: Build It from Blocks

Big Idea 3 · Topic 3.9 · Exercise 2

Build It from Blocks

25 minutes - 5 tasks - choose, combine, or modify the building blocks

Back to the Topic 3.9 lessonAll CSP topics

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The same cases as your handout, in the same order.

Scenario 1 · Foundational

Show the higher of the current player's score and the stored high score, so the leaderboard always displays the best of the two.

Building block(s) this task uses:

Use / combine / modify - and the algorithm sketch:

Enrichment - a boundary case to test or a subtler choice:

Scenario 2 · Core

A coin should appear on every 5th tile. Given a tile number, decide whether that tile has a coin.

Building block(s) this task uses:

Use / combine / modify - and the algorithm sketch:

Enrichment - a boundary case to test or a subtler choice:

Scenario 3 · Core

Report the average of a playtester's three level scores, and then state whether that average earns a passing grade of at least 60.

Building block(s) this task uses:

Use / combine / modify - and the algorithm sketch:

Enrichment - a boundary case to test or a subtler choice:

Scenario 4 · Challenge

Find the LOWEST of a playtester's three level scores so you can flag their weakest level.

Building block(s) this task uses:

Use / combine / modify - and the algorithm sketch:

Enrichment - a boundary case to test or a subtler choice:

Scenario 5 · Challenge

The hero must get from the start of a straight corridor to a wall two squares ahead, then turn and step once into the room on its right. Describe the algorithm as robot commands.

Building block(s) this task uses:

Use / combine / modify - and the algorithm sketch:

Enrichment - a boundary case to test or a subtler choice:

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