Ep. 14
S6, E14: To avoid their race ending in ruins, teams go back to school and pick between a game of pok-a-tok or an ancient number puzzle; they have to memorise the months of the complex Maya calendar.

S6, E14: To avoid their race ending in ruins, teams go back to school and pick between a game of pok-a-tok or an ancient number puzzle; they have to memorise the months of the complex Maya calendar.