CunningMath @CunningMath
Lecturer of Mathematics at the University of Massachusetts Boston. Interested in discrete/combinatorial geometry, computational combinatorics, math education. Joined April 2020-
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CunningMath retweeted
To "stack" a number, replace each digit with the sum of it and the digits to its left, apply carries if needed. eg 54->5|9=59, 387->3|11|18=428. A number is "primitive" if it is not the result of a stack of another number. eg 10 & 265 are primitive. Which numbers are primitive?
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I played some "Guess My Number" with my oldest today. First just an ordinary game where I picked a whole number from 1-100. Then one where I picked 5 and a half. Totally worth it to see him go from "there's no number between 5 and 6!" to "oh! 5 and a half!"
These flashcards look great and I decided to back them even though my kids are still a bit young (though maybe they'll surprise me!): kickstarter.com/projects/mathf… by @MathforLove
Dear students turning in eerily similar take-home tests: I am a mathematician. That makes me a professional pattern-matcher. I'm going to notice!
Here's Pascal's Triangle where the numbers have been replaced by circles whose areas scale appropriately: desmos.com/calculator/uo2… #mathartchallenge
There is one Earth Day per Earth year. By canceling out the Earths, we may conclude that there is one day per year.
Ooh, I think I'm going to make a twitter bot that posts a daily Fermi problem!
Here's a fun Desmos toy I made a couple weeks ago to show my students: desmos.com/calculator/bya…
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