Zodiac review: In which there was mad flow

Peter Liljedahl speaks and writes often about the concept of flow in the context of mathematics education, building on the earlier work of Mihály Csíkszentmihályi. According to Liljedahl, flow is “that moment where we are so focused and so absorbed in an activity that we lose all track of time, we are un-distractible, and we are consumed by the enjoyment of the activity. As educators we have glimpses of this in our teaching and value it when we see it” (Liljedahl, 2016b). The concept of flow thus offers a productive way to talk about student engagement, and offers a way to think about environments that may occasion engagement in our classrooms. In particular, flow arises in an environment “wherein there are clear goals, immediate feedback, and there is a balance between the challenge of the activity and the abilities of the doer” (Liljedahl, 2016b).

In order to occasion and nurture flow, Liljedahl argues, teachers should be intentional in providing hints and extensions that keep students in balance between their abilities and the challenge of the current task (2016a). Although I typically opt for this approachthat is, offer the same task to all student groups, and provide hints and extensions as necessary—, today, I found success in offering students choice of tasks (coupled with hints and extensions from me, as necessary). Continue reading “Zodiac review: In which there was mad flow”

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Reframing a classroom culture problem

tl;dr: Sometimes, a “problem” in the classroom is really a symptom of a bigger issue.

Here’s the backstory. Lately, I’ve been struggling with a lack of engagement in whole-group discussions after small-group work. I was growing increasingly frustrated that the majority of the students – especially the students who had a good grasp on the concepts – didn’t volunteer to share their thinking, and that they had no qualms about chatting with their friends when a student (or me) did choose to put forth a question or share an idea. Increasingly, I was feeling like I was losing them, and searched for explanations ranging from summer being around the corner, to deficiencies on the part of my students (kids these days!), to the possibility that I am a terrible teacher for whom there is, frankly, no hope. (During a recent conversation, Jimmy Pai described teaching as a balancing game between overconfidence and despair, and these days I’ve been leaning heavily to the right.) Continue reading “Reframing a classroom culture problem”

A problem worthy of attack: Friend groups

Quick post to share a really interesting problem a student of mine (G.) posed the other day.

Here’s the context: Last week, our school held a Box Lunch Auction, which involved homerooms preparing lunches of various sizes (e.g., for 6 people, for 10 people, for 30 people) and groups of students bidding on said lunches. The money raised was donated to various local charities.

Reflecting on the experience, G. wondered if the sizes of the lunches might be determined in a way that better suited the needs of the student body, rather than more or less randomly (truthfully, based on how much work a homeroom was prepared to do). This is the question he posed:

Let’s imagine that any two people in the school have a 50% chance of being friends. With n people, what’s the most likely size friend group?

I was hooked immediately. Continue reading “A problem worthy of attack: Friend groups”

On balance scales and trusting your students

At some point last semester, I remember feeling apprehensive about using balance scales as a model to introduce linear equations. I think I was worried about students’ ability to move beyond the model and consider things like negative and decimal coefficients. Would they be lost when they no longer had their crutch?

I should have trusted them.

Nat Banting has written about balance scales here. Although the metaphor of balance scales is referred to often in math classrooms – during the linear equations unit, students must hear the mantra “whatever you do to one side, you do to the other” at least 1000 times a class – the model really becomes powerful when students actually work with balance scale problems, and that they do so right from the start. Nat writes:

My Grade 9 students don’t see an equation for the first two weeks of their unit of solving linear equations. That is because I think students get all bogged down in the notation, and lose their problem solving intuition.

I decided to follow Nat’s advice. For a few days, my students worked through sequences of problems such as these, increasing in difficulty, where the goal is to find the “weight” of the square: Continue reading “On balance scales and trusting your students”

In which we Trashketball

My students and I are currently in the middle of a unit on linear systems, which follows a unit on linear relations. We had worked a lot with linear patterns during the previous unit, which offer a great foundation for developing understanding of multiple representations of linear relations. Turning to linear systems, a natural transition was to consider two or more patterns side by side, and to consider when, if ever, they would have the same number of objects. However, the model is limited in that it’s not continuous. Consider, for example, the following pair of patterns:

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Pattern #101, modified
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Pattern #9, modified

As several of my students noticed during their work on the task, there will always be an odd number of squares in the first pattern and always an even number of squares in the second pattern. Therefore, there would never be a step where the two patterns had the same number of squares (i.e., the system didn’t have a solution). Of course, this is true for the discrete model, and an astute observation. However, the system y = 4x, y = 2x + 9 does have a solution: namely, (4.5, 18). We could, theoretically, conceive of a step 4.5, or even continuous growth, with strange steps like 4.9143, but at this point, the model may be being stretched beyond its usefulness. Continue reading “In which we Trashketball”

The kids are alright

Quelle est une chose qui devrait être interdite à l’école ?

I often start French class with a question. The students reflect and discuss in their table groups, then share their responses with the rest of the class during the whole-group discussion. Yesterday, I opened with the above. In English: “What is one thing that should be banned at school?”

“Littering!” “Homework!” “Vaping in the bathrooms!”, a few students volunteered (in French). Then, a student offered, “Cell phones!” I’m sure you can imagine the disbelief and anger that this response evoked from a class of Grade 9 students, the majority of whom have an iPhone permanently glued into their hand and probably could not imagine a time without them. Once the others died down, I gave the student the floor, who argued with sincerity: “Cell phones are a huge distraction. We’re paid to be here by tax payers, which means we have a responsibility to learn and not waste time on our phones.” Once again, the other students erupted. It took a minute to calm them down.

Finally, a student responded bitterly: “If we’re paid to be here, where’s my money?”

I knew at that moment that French class, strictly speaking, was over. This was going to be something different, and I liked where we were going. Continue reading “The kids are alright”