Edmund Harriss

Mathematician Teacher Artist Maker, at the Uni of Arkansas. Author of Patterns/Visions of the Universe with @alexbellos, creator of @curvahedra.

[Edmund Harriss @Gelada]

The moment you have been waiting for...unpacking from the #curvahedrajourney cc @curvahedra @MoMath1 #mathart

[Zach Weinersmith @ZachWeiner]

I don't understand companies trying to beat SpaceX to a satellite megaconstellation. How you gonna win when they control the cheapest launch systems? It's like trying to win at building skyscrapers when your competitor owns all construction companies.

[Michael Pershan @mpershan]

This is why what I think strong students *actually* need is a parallel curriculum that deepens their mathematical knowledge rather than just accelerating through it.

[Michael Pershan @mpershan]

There is also a kind of fragility that strong kids often show that is, really, no fault of their own, but the result of learning things very quickly. There are some things that simply can NOT be learned very quickly. It takes years to get automatic about a lot of algebra stuff.

[Michael Pershan @mpershan]

I often see young kids who are "at a 6th grade math level" in terms of arithmetic but NOT in other markers of mathematical maturity and abstraction. Like, they get numbers but can't handle word problems or geometry, won't work on difficult problems on their own, etc.

[Edmund Harriss @Gelada]

Get mathy christmas presents sorted and help bring @mathemalchemy to the Navajo Nation! https://t.co/WCeqS6Cuhh

[Mark Chubb @MarkChubb3]

I am excited to announce this year's OAME Leadership virtual event. Dr Rachel Lambert (@mathematize4all) will be sharing her session "Designing Equitable Mathematics from the Margins: UDL Math" with educators across Ontario. Register at: https://t.co/9aaYOPtO8M
Pls retweet

[Edmund Harriss @Gelada]

@CmonMattTHINK Everyone knows time is recursive but with the structure of the padovan numbers.

[Edmund Harriss @Gelada]

@ZachWeiner You say there are two choices, surely one of them is not playing? Beyond that I am not sure you can assume ethics are linear. Certainly true that expected death is 1 in both cases.

[Edmund Harriss @Gelada]

@robertkaplinsky In an ideal world I think maths would be ideal to learn to be good at failing and comfortable in confusion. In particular keeping going and not getting overwhelmed by them. Having the clear experience of something confusing coming into clarity, makes it feel possible next time.

[Dr. Martin Skrodzki @msmathcomp]

The next #illustratingMath seminar is taking place this Friday, October 11th. As usual, the seminar will be held via Zoom, so scan the QR code or head over to https://t.co/oqfZ8JegXP where you find the link to the Zoom and an invite link to our Discord server for the discussion.

[Steve Trettel @stevejtrettel]

Hey Bay Area people! I have a piece of art going up in a gallery exhibition! It's in Epperson Gallery's "Abstract Dimensions" show (Sept 22-Nov3), and there's an opening reception this Saturday. Come on by and say hi! https://t.co/Z4xpxTYKgc

[Steve Trettel @stevejtrettel]

A flat torus in the 3sphere, built with the hopf fibration.

It’s straightforward to show the preimage of any simple closed curve on S2 under the hopf map is a flat torus in S3. A beautiful result of Ulrich Pinkall is the converse holds: all flat tori arise this way.

[Tom Edgar @TedG]

Teaching geometric series this fall? Here is a compilation video of 9 geometric series dissection proofs:

https://t.co/pzGlobltys

#proofwithoutwords #math

[Keenan Crane @keenanisalive]

There is a selection bias in college-level mathematics education:

We believe that the status quo works well because it works for the top students (who go on to do PhDs, etc.).

Yet it often works poorly for students in the “middle of the class.”

[Vinay @leashless]

I feel @Gelada may have ideas

[Steve Trettel @stevejtrettel]

Here’s another view of the trajectory I posted yesterday, of light doing one loop around a Schwarzschild black hole before rejoining its original trajectory.

There are similar such trajectories making 2 loops, 3 loops… n loops etc approaching an unstable circular orbit.

[Didier 'Dirac's ghost' Gaulin @DiracGhost]

Have yourself introduced to the beautiful mind of Mikhael 'Misha' Gromov, in 'Great circles of mysteries', a short book which cover his views of mathematics, the world and the mind.

On a quick aside, I love the fact that they used Misha on the cover😌

[Amie Albrecht - moved to 🦋 @nomad_penguin]

NEW Blog Post: ‘Learning from the practices of mathematicians’

What can we learn from how mathematicians work, think, and feel? A new series exploring how they come to know mathematics and what it means for maths education.

https://t.co/ku5BOgE0Tg

[Alex Bellos @alexbellos]

Rearrange two 30-60-90 triangles with no overlaps so the combined shape has a line of symmetry.

Find BOTH solutions

(one of the puzzles from today's column.)

[European Mathematical Society @euromathsoc]

The Maison Poincaré – a maths museum in France by Sylvie Benzoni-Gavage. 4/7

https://t.co/dr5KifxY02