Ask students to work on this task in groups, and to display their results on posters. Often we name students’ different approaches and strategies.
In shops with lots of ice-cream flavors there are many different flavor combinations, even with only a 2-scoop cone. With 1 ice-cream flavor there is 1 kind of 2-scoop ice cream, but with 2 flavors there are 3 possible combinations (eg vanilla/vanilla, chocolate/chocolate, and vanilla/chocolate).
- How many kinds of 2-scoop cones are there with 10 flavors?
- What about “n” flavors?
- Create a poster that represents your group’s thinking.
Pencils and Paper