Standards: 5.G.1, 5.G.2, 5.G.3, 5.G.4 · Coordinate plane (Quadrant I), classifying two-dimensional figures in a hierarchy

Part 1 — Coordinate Quest: a 10×10 island map with five landmarks; each quest gives coordinates, the traveler’s move is drawn as a red right-leg then green up-leg, and a swapped pair lands you in a swamp (every landmark’s swap is deliberately a swamp tile). Story Graph: bean-plant height by week with a selected point read in context, including week-to-week growth. Shape Family Tree: 12 shapes drawn with tick marks, parallel arrows, and right-angle boxes; the student answers each property gate themselves, gets corrected against the shape’s real properties, and watches the gold path climb the hierarchy — a square lights up under both rectangle and rhombus, with the leaf hidden until the last gate.
Part 2 — 8 lock-in rounds: five impostor verdicts with property reasons (including the “rhombus must be tilted” and “rectangle has long and short sides” misconceptions), a Square on Trial inheritance question, and two coordinate/context rounds.
Part 3 — Plot & Read Machine (origin → right → up → context → swap check, three situations), Classify Machine (gate walk with what each gate decides), Inheritance Machine (category × subcategory → lists inherited properties and the subcategory’s extras, or explains why inheritance fails and when it runs the other way).
Part 4 — Quiz, tiers: Island Cartographer / Expedition Guide / Map Reader / New Arrival.

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