Students find all the factors of a given number. One student chooses a number on the gameboard (1–36) as their score for the round. Their partner covers all factors of that number and earns a score by finding the sum of the covered factors. Students take turns choosing the starting number and add only the factors they cover during their turn. If a player chooses a number that has no uncovered factors, they lose their turn and receive no points for the round. The game ends when there are no numbers with uncovered factors left on the board. The player with the most points wins.

Each group of 2 students needs 36 centimeter cubes.

Students find factors and multiples for a given number. One student chooses an even number less than 50. Their partner chooses to cover either a factor or a multiple of that number. Students take turns covering either a multiple or factor of the previous number. When there are no factors or multiples left to cover, the player who covered the last number gets a point. Students take turns choosing the starting number. If a player chooses a starting number that has no uncovered factors or multiples, their turn ends and they receive no points for the round. Students play ten rounds, as time allows, and the player with the most points wins.

Each group of 2 students needs 100 centimeter cubes.