Houses in a Row
This problem challenges students to figure out how many different color combinations are possible for a row of houses, if no two houses can be painted exactly alike. Use large color squares and triangles to model this problem for students as an introduction to combinations.
Download Houses in a Row student worksheet and solution.
NOTE: Have students explain their thinking and how they organized their information. It is also important to ask students how they knew that they had found all of the possible combinations.