Each player has a set of buildings to place. Placing a building uses a whole wagon load of resources: 1 Wood, 1 Brick, and 1 Wheat.
The roll of the die determines how far the wagons will move. When any child stops beside a resource that they need, they can load the resource into their wagon. When your wagon is full, you get to build a new house! After you build all your houses, you begin collecting resources again to build the Town Hall. The player who builds the Town Hall wins the game!
Of course, children are also encouraged to play with the wonderful wooden buildings by themselves, and to create their own games and adventures in Catan.