TCM 2019

I’m excited to be heading back to the North Carolina School of Science and Mathematics (NCSSM) for their annual Teaching Contemporary Mathematics (TCM) conference.

I’ll be presenting Building Bridges through Computing, in which I’ll talk about how mathematical computing projects in Python and Scratch can build bridges between theory and practice, the procedural and the abstract, and the simple and the impossible! My talk will focus on Pre Calculus and Calculus topics, and include projects like solving systems of equations, estimating roots, and elementary numerical methods.

Estimating Intersections in Python

I presented at TCM in 2016 on Mathematical Simulations in Scratch and really enjoyed my visit. The conference is focused on big ideas and brings in lots of inspired teachers, and NCSSM is a unique school with incredible programs and exceptional teachers.

TCM 2019 runs January 24-26. You can find out more information here.

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The (Imaginary) Numbers at the Edge of Reality — Quanta Magazine

My latest column for Quanta Magazine connects the complex numbers from high school math classrooms to the quaternions and octonions, numbers systems currently being used in cutting-edge math and science research.

Have you ever sat in a math classroom and wondered, “When will I ever use this?” You might have asked yourself this question when you first encountered “imaginary” numbers, and with good reason: What could be less practical than a number described as imaginary?

But imaginary numbers, and the complex numbers they help define, turn out to be incredibly useful. They have a far-reaching impact in physics, engineering, number theory and geometry. And they are the first step into a world of strange number systems, some of which are being proposed as models of the mysterious relationships underlying our physical world.

Some physicists currently believe that the octonions, an eight-dimensional number system with non-commutative, non-associative multiplication and seven square roots of -1, may be the key to understanding the fundamental interactions between particles and forces. Learn more about their connections to “imaginary” numbers in the full article, which is freely available here.

There’s More to Math Than Drills

I like practicing. I’m weird that way.

When I was really into guitar, I looked forward to my daily regimen of chromatic scales. I liked playing pentatonic triplets and G major chords up and down the neck, over and over again. Sometimes I’d block off an entire day just to practice. Part of me found satisfaction in the repetition, but I also knew that every note I played was another small step toward mastery. Sore fingertips and cramped hands were what learning felt like.

But there’s a lot more to learning than drilling. I knew it back then, on my way to channeling Mississippi John Hurt, and I know it now as a teacher. This repetitive practice worked as a part of a broader approach. Yes, I needed to drill. But I also needed to experiment, explore, collaborate, theorize, and reflect. Real learning requires all of this, and more.

So as a teacher it frustrates me when drilling is proposed as the remedy to society’s mathematical struggles, a topic discussed in this recent New York Times op-ed. Yes, students should know that 7 x 8 = 56. But they should also know how to think flexibly about numbers, so when they have to multiply 71 and 83, or 7x + 1 and 8x – 4, they won’t panic when they can’t find the answer in their times table.

Students should understand multiplication, not just perform it. They should know how multiplication can sometimes be thought of as repeated addition, and why sometimes it can’t. They should be able to interpret multiplication geometrically, as area or proportion. They should recognize the algebraic structures of multiplication in other mathematical contexts, like functions and transformations.

Facility with numbers and command of basic facts are a good start, but drilling can only take you so far. The note you want isn’t always in the scale you’re working on. To play along, you’ve got to learn how to improvise. To write your own songs, you’ve got to transform those scales into something fresh and exciting. This is what doing math can feel like. And this is what we should want more of for our students. Not more drills.

We know the dangers of pushing excessive practice. Ask anyone who gave up studying an instrument why they quit and the drudgery of drilling is likely to come up. Those who end up not liking math often tell a similar story.

And this emphasis on drilling can be especially harmful when partnered with out-of-touch portrayals of math instruction. Learning for understanding is not at odds with practice and fluency. Fun does not need to come at the expense of the struggle that learning demands. Getting the balance right for every student and every class isn’t easy, but that’s why teaching math is such a complex and exciting challenge.

Perpetuating these false dichotomies can actually reinforce the obstacles we face in learning math and improving education. They convey an inaccurate picture of what math is about. And they undermine the trust between teachers, parents, and students that success requires. Like excessive drilling, this can end up doing more harm than good.

This essay was also published on the NSTA’s blog as part of my work as an NSTA / NCTM National STEM Teacher Ambassador.

2018 National STEM Teacher Ambassador

I’m proud to announce that I am a 2018-19 National STEM Teacher Ambassador!

Through a National Science Foundation grant, the National Science Teachers Association (NSTA) and the National Council of Teachers of Mathematics (NCTM) jointly created a National STEM Teacher Ambassador program that brings together accomplished teachers from across the country for intensive training in policy, media, and advocacy. The goal is to create a network of teachers equipped to advocate for STEM education and related issues at the district, state, and national level.

The program is only open to teachers who have received the Presidential Award for Excellence in Mathematics and Science Teaching, and admission is very competitive. I’m honored to have been chosen, and I have already benefited greatly from meeting and working with the other nine teachers in my cohort.

You can find out more about the 2018 Teacher Ambassadors here, and learn more about the program at the NSTA website. You can also find NCTM’s press release here.

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MfA Muller Award

I am extremely proud to be an inaugural winner of the MfA Muller Award for Professional Influence in Education!

The MfA Muller Award was created to recognize and reward teachers who influence the profession of teaching through their work in and out of the classroom. This is from the official description of the award:

For teaching to be truly respected, it is essential for the voices of great teachers to be at the forefront of conversations about math and science education. We need their influence both locally and nationally. Teachers must be included in public discourse about educational policies, reforms, and initiatives that impact the profession of math and science teaching, as well as within their own school communities. Great teachers who use their professional influence to engage, encourage, and support others in their profession are an inspiration and warrant recognition.

The MfA Muller award carries a $20,000 honorarium for the recipient, and includes a $5,000 award to the nominating organization. This is all made possible through the generosity of MfA board member Pete Muller and his family, through their Dancing Tides foundation.

Being a part of the Math for America community is, itself, a tremendous honor. To be recognized as a standout member of that community is incredibly humbling. I am grateful to Pete Muller, Jim and Marilyn Simons, and the entire MfA community.

You can read the press release for inaugural MfA Muller Award here.

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