Teaching LinkedIn Patches #108: students draw one rectangle at a time on this 8×8 board. 12 clues, 8 with fixed areas. Walk through 12 placements before declaring the grid solved — verify no overlap and no gaps after every patch.
Board spotlight: Many clues show a numbered area — when area and shape combine, the rectangle size is often mathematically fixed before placement. With 8 of 12 clues showing a numbered area, dimension math often pins down rectangle size before you choose a position on the grid.
General Patches strategy on 8×8: rectangles cannot overlap, every cell must belong to exactly one patch, and each patch must contain precisely one clue at its anchor cell. When a clue shows area 12 and a tall icon, only a few height×width pairs are legal — list them before drawing. After each placement, mentally partition the leftover white space: if any region cannot host its remaining clues, back up and try the next candidate.
Lesson step 1: show why 3×3 at Row 1, column 2 is forced around Row 1, column 4. This patch covers 9 cells (3×3). The shape icon requires a square. Ask: what cells are now unavailable for other clues?
Lesson step 2: show why 1×4 at Row 1, column 5 is forced around Row 1, column 8. The clue shows area 4, so this patch must cover exactly 4 cells (1×4 = 4). Ask: what cells are now unavailable for other clues?
Lesson step 3: show why 3×1 at Row 1, column 1 is forced around Row 2, column 1. The clue shows area 3, so this patch must cover exactly 3 cells (3×1 = 3). Ask: what cells are now unavailable for other clues?
Lesson step 4: show why 2×2 at Row 2, column 5 is forced around Row 3, column 5. This patch covers 4 cells (2×2). The shape icon requires a square. Ask: what cells are now unavailable for other clues?
Lesson step 5: show why 3×2 at Row 2, column 7 is forced around Row 3, column 8. The clue shows area 6, so this patch must cover exactly 6 cells (3×2 = 6). Ask: what cells are now unavailable for other clues?
Lesson step 6: show why 2×3 at Row 4, column 1 is forced around Row 4, column 1. The clue shows area 6, so this patch must cover exactly 6 cells (2×3 = 6). Ask: what cells are now unavailable for other clues?
Lesson step 7: show why 2×2 at Row 5, column 7 is forced around Row 5, column 8. The clue shows area 4, so this patch must cover exactly 4 cells (2×2 = 4). Ask: what cells are now unavailable for other clues?
Lesson step 8: show why 1×3 at Row 6, column 1 is forced around Row 6, column 1. The clue shows area 3, so this patch must cover exactly 3 cells (1×3 = 3). Ask: what cells are now unavailable for other clues?
Lesson step 9: show why 3×3 at Row 4, column 4 is forced around Row 6, column 4. This patch covers 9 cells (3×3). The shape icon requires a square. Ask: what cells are now unavailable for other clues?
Lesson step 10: show why 2×2 at Row 7, column 7 is forced around Row 7, column 8. The clue shows area 4, so this patch must cover exactly 4 cells (2×2 = 4). Ask: what cells are now unavailable for other clues?
Lesson step 11: show why 2×4 at Row 7, column 1 is forced around Row 8, column 1. The clue shows area 8, so this patch must cover exactly 8 cells (2×4 = 8). Ask: what cells are now unavailable for other clues?
Lesson step 12: show why 2×2 at Row 7, column 5 is forced around Row 8, column 5. This patch covers 4 cells (2×2). The shape icon requires a square. Ask: what cells are now unavailable for other clues?
Recap: 12 patches, 64 cells, one partition path. Replay using constrained-clue-first ordering.