Teaching LinkedIn Zip #473: students sketch one checkpoint hop at a time on this 7×7 board. 10 checkpoints, 10 walls. Walk the 9 segments before drawing the full line.
Board spotlight: Many blocked edges narrow your options early — map wall bottlenecks before tracing toward the next numbered checkpoint. Wall count 10 on 7×7 shapes which corridors stay open between numbered cells.
Lesson hop 1: show why the path must pass through R4C6 before checkpoint 2. Tight 3-cell hop — checkpoints 1 and 2 sit near each other; still visit every intervening cell exactly once.
Lesson hop 2: show why the path must pass through R3C6 before checkpoint 3. Tight 2-cell hop — checkpoints 2 and 3 sit near each other; still visit every intervening cell exactly once.
Lesson hop 3: show why the path must pass through R5C2 before checkpoint 4. 7 cells link checkpoint 3 at R3C6 to checkpoint 4 at R5C2 with open corridors (no walls on this segment).
Lesson hop 4: show why the path must pass through R4C2 before checkpoint 5. Tight 2-cell hop — checkpoints 4 and 5 sit near each other; still visit every intervening cell exactly once.
Lesson hop 5: show why the path must pass through R6C2 before checkpoint 6. 15 cells link checkpoint 5 at R4C2 to checkpoint 6 at R6C2 with open corridors (no walls on this segment).
Lesson hop 6: show why the path must pass through R7C7 before checkpoint 7. 9 cells link checkpoint 6 at R6C2 to checkpoint 7 at R7C7 with open corridors (no walls on this segment).
Lesson hop 7: show why the path must pass through R2C6 before checkpoint 8. 9 cells link checkpoint 7 at R7C7 to checkpoint 8 at R2C6 with open corridors (no walls on this segment).
Lesson hop 8: show why the path must pass through R2C2 before checkpoint 9. 7 cells link checkpoint 8 at R2C6 to checkpoint 9 at R2C2 with open corridors (no walls on this segment).
Lesson hop 9: show why the path must pass through R1C1 before checkpoint 10. Tight 3-cell hop — checkpoints 9 and 10 sit near each other; still visit every intervening cell exactly once.
Recap: 10 checkpoints, 9 teachable hops, one continuous route. Replay using checkpoint-first planning.