2008 AP CSA FRQ 3: OpossumCritter
Topic: GridWorld Case Study (Legacy)
Skills: Case study specific - Critter behavior, grid manipulation
Unit: Unit 3 (Class Creation) (2025-2026 AP CSA)
Points: 9 | Time: ~22 minutes
Study Guide: Unit 2: Selection & Iteration
Note: This FRQ used the GridWorld/Marine Biology Case Study (no longer tested).
Part (a)
Note: This FRQ was part of the GridWorld Case Study which is no longer part of the AP CSA curriculum.
Try First! Attempt before viewing solution.
Solution
// This FRQ required knowledge of the GridWorld Case Study
// which has been removed from the AP CSA curriculum.
// Modern equivalent: Critter behavior and movement patternsPart (b)
The GridWorld Case Study is no longer tested on the AP exam.
Solution
// Key concepts now tested through standard class design problems.Key Concepts
✓ Overriding methods in subclasses
✓ Grid-based object movement
✓ Actor behavior implementation
Common Mistakes
✗ This question used the deprecated GridWorld Case Study
✗ Focus on modern class design FRQs instead
Official Resources
Author: Tanner Crow - AP CS Teacher, 11+ years