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Bryan Meyer

@doingmath.bsky.social
203 followers 120 following 229 posts
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Bryan Meyer @doingmath.bsky.social · 18/12/2025
Ah! This extreme case is interesting. Here is a situation where the MAE is basically zero (VERY little 'error of the model') but the r value indicates 'no relationship.' So, measuring the 'error of the model' is not the same as measuring the 'strength of the relationship'
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Bryan Meyer @doingmath.bsky.social · 12/11/2025
Conceptual understanding is not just knowing a principal, it must involve being able to explain why something is true. (See below from CCSS) I don’t see that present in any of the classroom examples given, really
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Bryan Meyer @doingmath.bsky.social · 11/11/2025
This is from the Introduction of the CCSS. What is your reaction to this definition?
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Bryan Meyer @doingmath.bsky.social · 30/09/2025
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Bryan Meyer @doingmath.bsky.social · 30/06/2025
In the curriculum I’m building, I center the use of Habits of Mind and Habits of Interaction. “Listen to Understand” is one. And, yes, naming and teaching it helps a lot.
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Bryan Meyer @doingmath.bsky.social · 03/06/2025
Maybe not a proof, but it seems to me like these second differences create some intuition?
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Bryan Meyer @doingmath.bsky.social · 20/02/2025
Yes. But this is what is kinda weird/wonky. In your Desmos file, the transformations are defined according to the mathematical conventions. But, like you can see in my attached image, JavaScript treats it differently. The same commands result in a rectangle that is in a different location.
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Bryan Meyer @doingmath.bsky.social · 20/02/2025
If I start with a rectangle centered at the origin, and 1) rotate 90 degrees about the origin then 2) translate (100,100) I get a result that is in the second quadrant. The translation is in reference to the rotated coordinate plane.
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Bryan Meyer @doingmath.bsky.social · 18/02/2025
I’m curious how people think about this… Here are two different sequences of transformations applied to the picture below: 1. Rotate 90, translate (100,100) 2. Translate (100,00), rotate 90 Do they produce the same result? Why or why not? #iteachmath
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Bryan Meyer @doingmath.bsky.social · 25/01/2025
In the upcoming unit I'm working on for #MathThatMatters (math-that-matters.com), students will learn transformational, coordinate geometry in order to build their own 'joyful gif.' I'm excited to see what they create. Here is mine... #mtbos #iteachmath #mathstoday
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Bryan Meyer @doingmath.bsky.social · 14/01/2025
4. There is explicit attention to teaching and nurturing the development of mathematical 'Habits of Mind' and 'Habits of Interaction.' These are named and integrated into the daily activities of the curriculum, not as a 'once-a-week' problem solving activity.
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