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Patrick Honner
Works at NYC DOE
Attended University of Wisconsin-Madison
Lived in Brooklyn, NY
22,166 followers|937,602 views
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Patrick Honner

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Prints like this will definitely help students sort out order-of-integration issues!
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Patrick Honner

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I'm finding more consistent success with our 3D printer, as I start to understand the machine and the engineering a bit more.  I'm hoping that I can trade that knowledge for everything +Theron Hitchman is figuring out under the hood!

On the left is a Henneberg minimal surface, and on the right is two orthogonal copies of that surface.
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So, 3D printers aka "Descartes's revenge". The thing with the number of dimensions we can experience directly, 1,2,3 - is that their list spells 1,2,3,... and mathematics invites itself.
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A short post about my trip last week to Washington D.C., where I spoke at a policy briefing after Nancy Pelosi, Harry Reid, Lamar Alexander, and others.
http://mrhonner.com/archives/14765
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Really excited to meet John Allen Paulos last night, whom I have long revered.  A great talk at MoMath, and a book coming out!  And a super nice guy.
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I challenged my students to construct the trisection points of a segment today.  One of them did it by constructing a triangle such that the given segment was a median, and then finding the triangle's centroid!  Brilliant!
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Excellent! A natural question what other fractions is it possible to obtain this way plus something more, say, classic
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Why is the sum of a rational number and an irrational number irrational?  Because the sum of a rational number and an irrational number is always irrational.

Brought to you by the New York State Algebra exam.
http://mrhonner.com/archives/14706
Here is another installment in my series reviewing the NY State Regents exams in mathematics. This is question 25 from the Common Core Algebra exam. I've already complained about the contrived, art...
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+Graeme McRae​ You implicitly used the rule that a rational minus a rational is rational. I'm not sure if you'd get full credit, which reminds me why I prefer interactive proofs -- it helps to have another human there to say what level of detail they require.

But of course this is impractical, both for tests and for much of real world mathematics. 
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Patrick Honner

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A cool 3D-printing success!
http://mrhonner.com/archives/14812
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Yet another state exam question with no correct answer
http://mrhonner.com/archives/14773
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I don't remember ever being taught about box and whiskers plots. Whether +Robert Jacobson 's observation about usefulness in science applies (I am not an experimental/social scientist, so I wouldn't know), I still question why this is part of the mathematics curriculum. (I am, after all, a professional mathematician.) If being able to read this kinds of plots is so valuable to science, I wonder why it is not on the science exam instead. (Maybe there isn't an equivalent exam in science?)

As it stands the question is mostly a vocabulary test, and a pretty bad one at that. It does not require the students to understand what is a "median" or what is an "interquartile range", but rather just that a median is represented by a certain symbol on a certain type of graph, and ditto interquartile range.

At the very least, let us test whether the students know how to interpret median and interquartile range usefully. (Who here actually plots temperature data as a box and whiskers and use that to determine vacation destinations? The interquartile range is pretty useless if this year happens to be El Nino or La Nina.) The median and interquartile range are somewhat useful if you assume your data has a single humped distribution. But in other data sets using that particular metric is somewhat dubious.
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This is awesome:  upload an image, create a hyperbolic tiling!  via +David Richeson (or was it +Theron Hitchman?)
http://www.malinc.se/m/ImageTiling.php
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Good lord so much on that site is stunningly beautiful.
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The inaugural winner of the million dollar Global Teacher Prize says she wouldn't encourage young people to go into teaching.  This says a lot about what it's like to be a teacher right now.
Nancie Atwell, winner of the Varkey Foundation's first Global Teacher Prize, speaks to CNN's New Day about the award.
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Ouch.
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Could you eat on $2.50 a day?

Tons to learn about food, cooking, and shopping from Alan Eliasen as he blogs about his 45-day challenge.

https://futureboy.us/blog/twofifty.html
Engineer Eats Efficiently (for $2.50 a Day). For 45 days, I'm trying to spend less than $2.50 a day on food. This is an account of the food, the costs, the science, and the fun of that experiment. Table of Contents. Why? Why $2.50 a day? Rules and Guidelines; Day 1 - Tomato Soup and Toasted ...
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I think it's great. This level of detail provides insight on a number of levels and crosses that divide that can show all sorts of people how relevant mathematical thinking is to their lives. It can branch out, too. Like, I usually pick my own berries to freeze for the winter, which saves us a lot money, but those are hours I'm not working and therefore not earning money. But then there are social and ecological benefits hard (yet somewhat possible) to quantify.
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Have him in circles
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Math Teacher in Brooklyn, NY
Introduction
I write about Mathematics and Teaching at www.MrHonner.com.
I am a two-time recipient of Math for America's Master Teacher Fellowship, a Sloan award winner, and the runner-up for the Inaugural Rosenthal Prize for Innovation in Math Teaching, presented by the Museum of Mathematics.
Education
  • University of Wisconsin-Madison
    Mathematics
  • Wayne State University
    Mathematics, Philosophy
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Patrick Honner's +1's are the things they like, agree with, or want to recommend.
Tell Me Why You Blog
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So, as much to my surprise as anyone's, I'm not only talking at NCTM in April but they made me a featured speaker? Only freaking out a littl

What do we learn from our students?
anglesofreflection.blogspot.com

It's been a while--partly because of work, and partly because I just found out about the death two summers ago of one of my former students,

Mathematical Association of America
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The largest professional society that focuses on mathematics accessible at the undergraduate level.

Google+
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FEATURES:- New Feature: Google+ Communities - Enjoy magazine style layout in the new tablet version - Automatically share photos to an Event

Sage Mathematical Software System
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open-source mathematics software system

Math Photo: Sculpture of Spheres « Mr Honner
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Math Photo: Straw Cylinders « Mr Honner
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Math Art: Kolam Spirals « Mr Honner
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Math Art: Starburst, by Tim Locke « Mr Honner
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White Group A level JC H2 Maths tuition: 92nd Carnival of Mathematics
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Ninety-two isn't any ordinary number; it is associated with "royalty". How does that work out? It represents the number of solutions to whic

Math Art: Student Sliceforms « Mr Honner
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Math Photo: Sharp Tangency « Mr Honner
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9/15/12 — Happy Right Triangle Day! « Mr Honner
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The Algebra of Coffee Consumption « Mr Honner
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