The content for this week was very stimulating and it sparked a lot of discussion amongst the class! In particular, I enjoyed doing the handshake problem and the paper strip activitie in small groups. The small groups were nice because it allowed every student to provide input into potential solutions and each one of us felt like a significant member. Our individual ideas and thoughts could be brought up to the group and considered in a collaborative effort with the others. Joyce let us walk around after and browse our classmates’ solutions, which was beneficial for learning as future teachers. I found it especially interesting to see that every group thought of a different procedure to solve the handshake problem. Not only did this allow us to see that there are multiple ways to figure out a solution, but also that every individual has different ways of thinking and learning. This is crucial knowledge for our careers, since we will encounter hundreds of students, no one having the same learning style. There are numerous different ways to solve mathematical problems, and there is no single “correct” strategy; so teachers must be weary of this and encourage diversity in the classroom.
These activities also reflected the textbook reading of Chapter 1, which emphasizes the need for two mathematical processes when beginning to solve a question: specializing and generalizing (Mason et al., 2010). In the handshake and paper strip problems, each group had to incorporate and apply these processes while answering the question that was asked. We had to specialize by trying different examples of ways to think about the question. This made the question meaningful, and allowed us to begin to see any underlying patterns that could aid in our attempt to figure out a solution. During the specialization portion, we tried to find other ways of calculating how many handshakes the class completed, in total (78), and how many creases would be made in the paper. My partner and I, for the handshake problem specifically, tried three equations before coming to a confirmed “correct” answer. Upon pondering solutions, we came up with about four different ways that we thought we could solve the problem. We also tried using the RUBRIC format for recording our thoughts that was mentioned in the textbook. We were able to write “Stuck”, “Aha”, “Check”, and “Reflect” to help us reflect on our mathematical thinking and understanding of the question. Following this recording, we were able to narrow the formulas down to a “conjecture. In other words, we found one that we thought would work for the “handshake problem” with any number of people. We then moved on to the next stage – generalization. We tried to generalize our equation by ensuring that it worked for several variables (n = number of students). We tried to generalize our equation by setting the number of students (n) to 2, 3, 4, and the actual number, 13, and using our sensed pattern (formula) to articulate and justify the conjecture. Overall, it was fascinating to put these two crucial mathematical processes to practice and observing my classmates do the same, in various ways. Applying this reading in a real-life, mathematical setting with fellow classmates was a key learning moment for myself as both a mathematician, and as a future educator.
I only wonder, now, how I can better specialize and
generalize, and facilitate this for others. I would like to come up with underlying
patterns and possible conjectures more quickly in the future. Furthermore, I want
to learn more about how to instruct students on how to use these processes when
answering math questions. Some challenges that I foresee include: not-as-advanced
students; being misled into believing a pattern is right when it is too simple
and only partly correct; students finding it difficult, unnecessary, or boring;
or other problems. Therefore, I must ensure that I keep practising this and
encourage my students to do the same by motivating them and providing feedback.
I now know that children come to school at a young age with a “generalizing”
power of mind (Mason et al., 1988), and it is my duty to use this existing
schema and instruct all students on how to specialize and generalize.
They must always test an observed pattern(s) with a variety of examples. It will
also be critical to make sure that I build students’ self discipline so they persevere
and continue to use the RUBRIC framework (in a natural way, not dogmatically),
and explain why they should record their ideas, purposes, feelings, etc.