First I showed students the slide show which included some interesting math facts from the Bahamas. Then I introduced the problem (see slide show). The problem required students to work through 2 steps. Students needed to figure out how many stamps I would earn for spending $240 and then how many discount cards the stamps would fill (12 stamps fit on each card).

-Students figured out that for every $50 spent, you received 5 stamps.

-These students used place value information to figure out how many groups of 10 are in 240.

-Students used an array to figure out how may stamps would fill up a card (each card holds 12 stamps).