Select Page

How do we engage adult learners in the seemingly simple yet complex mathematical ideas of the primary grades?  While teachers can examine the mathematical focus of K-2 tasks, and think about what they might look for as they observe, what questions they might ask to assess understanding, or consider how they might support or extend the targeted math ideas, playing Counters in a Cup or solving a How Many of Each? problem is not exactly an engaging math task for adults.

A few weeks ago, I attended an Investigations Workshop. I observed a group of K-5 teachers and coaches immersed in a counting task, sharing their strategies, and then connecting how their experience brought out the complexities of counting. As I watched, I was once again reminded of why How Many Butterflies? is one of my touchstone tasks for engaging adult learners in the mathematics that is central to the primary grades. Participants are instantly drawn to the large, laminated “Butterflies” poster as they find a butterfly they recognize or point out ones that are especially unusual.  The display is interesting in that there is variability of color, size, pattern and orientation. Very quickly, a comment of “Wow I never knew there were so many types of butterflies!” is followed by the question of “I wonder how many there are?” and the investigation begins.

There are several factors that make this counting task challenging: the butterflies are randomly arranged on the poster so counting them in an organized manner requires a plan. The butterflies are stationary. You can’t pick them up and move them as you count or organize them into convenient sized-groups, so determining how to keep track of what has been counted and what’s left to count becomes a decision. Since people are working in small groups, negotiating a plan of action becomes part of the task and once the plan is enacted, it is not unusual to hear comments such as “Could you count more quietly, I’m getting distracted” or “No, I think that butterfly is on my side of the poster and I counted it already.” Inevitably someone catches wind of an interesting counting strategy being employed by another group and convinces their group to abandon their original idea and shift to a different strategy. Rarely do all groups arrive at the same answer. In fact, it is the result of different answers that spurs people into recounting and double-checking their work. These comments and experiences are remarkably similar to what you might see or hear when watching K-2 students engaged in similar work.