
Mr. Walker? Why do we have to learn this?
Those seven little words have been at the heart of my professional soul searching for most of my teaching career. As a secondary school math teacher, that question has come up with such regularity over the years that it prompts not just conversations in the classroom, but with colleagues and parents. It can be found as the topic of teacher workshops and key note addresses at conferences. So, why is it that we expect our children to learn something as abstract and seemingly irrelevant to the ‘real world’ as algebra?
One of the most common responses we give as teachers is that it’s not about the algebra itself, it’s about learning how to think. Now, take a moment and put that statement into context. You are standing in front of a room full of adolescents who have an entire world of other things on their minds. How do you think that statement goes over? They already know how to think, have been doing it ever since they could remember, and besides, there are fries for lunch! Well, we invariably move on and continue the lesson, and don’t really worry about it until the next time it is asked, which is usually not too far down the road.
In actuality, however, this is a pretty good answer. If we were not capable of thinking abstractly when facing a problem or new idea, how far would we have progressed? The ability to think abstractly is something that depends upon brain development, but at the same time, is something that can be learned and practiced. And since we are working with children who are at a stage in their lives where this ability is beginning to flourish for the first time, it can be a truly exciting endeavor. So why aren’t they excited about algebra? And even geometry, which seems to have countless applications, gets a bad rap in high school. I believe it’s all about framing and context. Open any high school algebra textbook and it becomes immediately obvious. x’s and y’s and countless exercises that are about as exciting as watching grass grow. And hidden away, at the end of each problem section, are a couple of word problems. Problems numbered in the high 20’s or 30’s. The section that students pray we overlook when assigning the night’s homework. “Just let me grind through the practice exercises, which are just like the examples we did in class, and I can go to sleep.” This begs the question, how much abstract thinking does this entail? What happened to the excitement of discovery? What happened to the answer to ‘Why do we have to learn this?’
If our goal is to help our students learn how to think, then those challenging ‘word problems’ need to come first. It is obvious that there is no way we can teach them to solve every problem they will face in life, so teaching them how to think creatively and abstractly when faced with a new problem is the key to their future success. They need to be able to try out different approaches, discover the ones that don’t work, as well as the ones that do. They must learn to recognize when they don’t have the tool they need to solve a problem and thus must find a new one. Learning then has a context, and there is a reason for developing a new skill. This is at the heart of what we often refer to as becoming a life-long learner, then the door is open for them to experience the joy that ultimately comes from learning for learning’s sake. This is what is at the heart of The Webb Schools Mathematics Department’s phased introduction of Problem Based Learning (PBL) in our mathematics classrooms.
We are in the process of transforming the environment in our classrooms into one which is more student-centered, more focused on discovery, and promotes discussion and presentation of each student’s ideas. The content of our math courses is not changing, however, the pedagogy behind delivering that content is. By using very carefully constructed and sequenced problems that allow the students to discover the skills and concepts found in a traditional algebra/geometry curriculum, we give them a context for their learning. At the heart of the process is nurturing their ability to independently solve challenging problems that they may not have been faced with before. We pose written problems that will ultimately require them to apply a skill they have previously developed, or will guide them in the discovery of a new skill. We then ask them to present their ideas to their classmates. They must present an argument they believe leads to a solution, and to justify it. On the other hand, they may have struggled with a particularly challenging problem and not been able to find the solution. In that case, we expect them to explain their difficulty, and see if any of their peers may have an insight that would help them. In this way we are fostering habits of mind that we all use in our day to day lives as adults, while delivering the content that we know they will need for future studies. As they become aware of their own growth as independent learners and problem solvers, the answer to the question “Why are we learning this?” becomes obvious.
As educators, this approach to teaching mathematics puts us in the position of being a mentor and coach. We pose the questions, and then step back and guide rather than direct. We allow the students to take the center stage. It is their voices you will predominantly hear in our classrooms. At the same time, somewhat behind the scenes, we are in a position to nudge the discussion if necessary. We are there to ensure that the content is recognized and that the different strands that flow though our curriculum are pulled together at the appropriate times. It is critical that the teacher recognize when to step in, and when to let the students take the lead. In this way, we encourage an environment where our students are engaged, collaborating, discovering, and developing habits of mind that will foster success, not just across Webb’s curriculum, but throughout their lives.