Mayor Gear
Multiplication City
Equal groups, arrays, and factors keep the city stocked. A remainder changes what the warehouse can ship.
Gates you can reach in any order: Foundry, Windows, Belts, Locks, Harbor, Cranes.
1. Gear Baskets
FoundryThe city runs on equal baskets of bolts. You choose a machine, then whether to keep the groups equal or dump them into one pile.
Grades 2, 3 · equal-groups
2. Window Arrays
WindowsA dark apartment block is an array of windows. You choose a facade, then whether to fill a rectangle or scatter the lights.
Grades 3 · arrays
3. The Fact Foundry
FoundryThe foundry stamps facts through 10. You choose a forge, then whether to recall with an array beside you or guess a nearby sum.
Grades 3, 4 · mult-facts
4. Belt of Tens
BeltsA belt multiplies loads by 10 or 100. You choose a belt, then whether to shift places or stick a zero on the wrong side.
Grades 3, 4 · mult-tens
5. Factor Locks
LocksA lock opens for the factors of a number. You choose a door, then whether to test by division or by adding until you get tired.
Grades 4 · factors
6. Cargo Shares
HarborA ship must share crates into equal holds. You choose a deck, then whether to deal them out or subtract once and call it division.
Grades 3, 4 · division
7. Remainder Warehouse
HarborSome crates will not make another full group. You choose a warehouse, then whether to report the remainder or force it into a group that is not equal.
Grades 4 · remainders
8. The Multi-Digit Crane
CranesThe crane lifts a rectangular load. You choose how to see the partial products, then whether to add them or multiply only one digit and hope.
Grades 4, 5 · multi-digit-mult