iiinova — where your digital self keeps evolving

Oscar Levin @oscarlevin.com · 25/07/2026

Is it time to start writing your course materials? Want to make them accessible? We are hosting a few free workshops in the next weeks to help you do just that with PreTeXt. And using PreTeXt.Plus means nothing to install and no GitHub required. Info here: pretext.plus/announcement...

pretext.plus

PreTeXt.Plus | Writing Accessible Course Materials with PreTeXt: workshops in July & August 2026 | Office Hours at MAA MathFest

To help our colleagues adopt PreTeXt to meet this need (whether via the PreTeXt.Plus app, or a local install of PreTeXt's free and open source software), we're excited to offer several virtual workshops this July and August.

0145

Oscar Levin @oscarlevin.com · 18/06/2026

We do plan on offering shorter more targeted workshops later this summer which will not have such requirements, so keep an eye out.

010

Oscar Levin @oscarlevin.com · 17/06/2026

Thinking about #accessibility for your #math course materials for the Fall semester? Join @mitchkeller.phd and me for a virtual 3-day workshop next week hosted by the Ohio section of the MAA: More at mathtech.org/workshops/oh...

mathtech.org

Ohio MAA 2026 Summer Workshop

Showcasing open-source technologies that innovate mathematics education and communication.

163

Oscar Levin @oscarlevin.com · 13/06/2026

Or *more* help resources, in case you Rrrnt a pirate.

030

Oscar Levin @oscarlevin.com · 13/06/2026

We are here to help, including multiple drop in zoom office hours every week. See pretextbook.org for me help resources.

pretextbook.org

PreTeXt - Write Once, Read AnywherePreTeXt

260

Oscar Levin @oscarlevin.com · 13/06/2026

Additionally, you can now add interactive exercises (eg, webwork) in your PreTeXt worksheets for your online students to try, and their grades can be automatically recorded in Canvas.

140

Reposted by Oscar Levin

Mitch Keller @mitchkeller.phd · 08/05/2026

#PreTeXtGang win during the Canvas outage: I had been embedding worksheets and annotated notes in Canvas (Thanks @oscarlevin.com !) from GitHub-pages deployed stuff. Just had to email students direct links to the entire thing. Quickly built and deployed exam questions that had been posted as SCORM.

093

Reposted by Oscar Levin

Steven Clontz @clontz.org · 09/04/2026

oh also lol this is gonna make a lot of people happy #MathSky

screenshot of pretext.plus web app which includes a "LaTeX-style PreTeXt" project type

1111

Reposted by Oscar Levin

Steven Clontz @clontz.org · 09/04/2026

Faculty and students can now create a pretext.plus account without needing an invite when they use their .edu email address! We'd love your feedback at the #pretext-plus channel of mathtech.org/chat!

pretext.plus

PreTeXt.Plus | Author accessible mathematical documents in your browser

PreTeXt.Plus is a service that supports the authoring and sharing of PreTeXt documents using only a web browser.

1145

Oscar Levin @oscarlevin.com · 25/03/2026

Oh no! #MathSky friends! According to a theoretical physicist and Scientific American, we just can't agree! Even if it doesn't lead to any more contradictions that calculus. Mathematicians can’t agree on whether 0.999... equals 1 | Scientific American share.google/mA2qoeNbIulE...

share.google

Mathematicians can’t agree on whether 0.999... equals 1

Whether 0.999... equals 1 is the subject of bitter dispute in countless online forums

222

Oscar Levin @oscarlevin.com · 14/03/2026

Congratulations! Very well deserved!

010

Oscar Levin @oscarlevin.com · 23/02/2026

Another free #PreTeXt workshop, this time on a Monday (3/2), only one hour, and focused on creating a worksheet using the pretext.plus online editor. Register here: scholarlattice.org/collections/...

scholarlattice.org

Getting Started with PreTeXt (Mar 2026) | ScholarLattice

Learn more on ScholarLattice.org!

075

Oscar Levin @oscarlevin.com · 12/02/2026

Thanks for the heads up. I'll see what I can do to fix that.

010

Oscar Levin @oscarlevin.com · 04/02/2026

Our next "Getting Started with #PreTeXt" workshop is next week on Thursday, February 12, 12-2pm EST. Space is limited. Register for free: scholarlattice.org/collections/...

scholarlattice.org

Getting Started with PreTeXt (Feb 2026) | ScholarLattice

Learn more on ScholarLattice.org!

165

Oscar Levin @oscarlevin.com · 09/01/2026

Want to get started with #PreTeXt? Maybe write your syllabus or a worksheet so it is accessible? @mathtech.org is hosting a free zoom drop-in office hours 12-2pm EST today. Link available at mathtech.org/events/

mathtech.org

Events

Showcasing open-source technologies that innovate mathematics education and communication.

044

Oscar Levin @oscarlevin.com · 08/01/2026

I know that nutrition is complicated and there can be honest debates about the health and morality of eating meat... But can we at least agree that that there is zero way in which this is a "pyramid"? www.npr.org/2026/01/07/n...

npr.org

RFK Jr.'s new food pyramid puts meat, cheese and vegetables at the top

Health Secretary Robert F. Kennedy Jr. has announced new dietary guidelines for Americans focused on promoting whole foods, healthy proteins and fats. And he has "declare[d] war" on added sugar.

120

Reposted by Oscar Levin

Steven Clontz @clontz.org · 01/01/2026

Excited to share the below announcement for our new app at pretext.plus -- author PreTeXt in your web browser, no GitHub required! Join the @mathtech.org Discord chat to grab an invite code: first come, first served! pretext.plus/projects/80f...

23815

Reposted by Oscar Levin

ꭓle Ormsby 𓆙 @e-infinity.space · 07/12/2025

MAA workshop on accessible course materials with @mitchkeller.phd and @oscarlevin.com! Free for AMS and MAA members. events.zoom.us/ev/AjygoFh_y...

events.zoom.us

Accessible course materials: a practical guide

193

Oscar Levin @oscarlevin.com · 02/11/2025

I assume this is an implicit differentiation question, with w, q, and z functions of t. In which case, you might want to use the chain rule.

100

Oscar Levin @oscarlevin.com · 29/10/2025

That was a good hint. Also, "abecedarium" is my new favorite word.

010

Reposted by Oscar Levin

MathTech.org @mathtech.org · 10/10/2025

In today's blog post, @StevenClontz shares his passion for getting mathematicians (and other mathy academic types) up and running using GitHub tools that only require a web browser. mathtech.org/2025/10/10/g...

mathtech.org

Getting Started with GitHub

This post is supported by National Science Foundation award #2449139. While anyone in the mathematical sciences should have no trouble engaging in the development of software supporting math-relate...

0114

Reposted by Oscar Levin

Steven Clontz @clontz.org · 28/09/2025

Use Doenet.org to create mathematical interactives to support inquiry-based learning: mathtech.org/2025/09/26/d...

Screenshot of interactive applet that illustrates how scaling a column of a determinate scales the determinate's value by the same factor.

1106

Reposted by Oscar Levin

code4math Community @code4math.org · 12/09/2025

Our Grand Opening continues on Monday as @oscarlevin.com shows us how PreTeXtBook.org can help authors create accessible and interactive scholarly documents. Join us Sep 15 at 9am Eastern. preview.scholarlattice.org/collections/...

pretextbook.org

PreTeXt

053

Oscar Levin @oscarlevin.com · 29/08/2025

Well now I need to wait for this to come to streaming so I can do that. As long as I can figure out how to keep popcorn close enough to my treadmill.

000

Oscar Levin @oscarlevin.com · 17/08/2025

New PreTeXt feature: Handouts! If you use guided notes in your teaching, or just want to make accessible versions of the printouts you bring to class, you can now author these in #PreTeXt and print directly from the browser (or save as PDF to annotate on a tablet). mathtech.org/2025/08/17/h...

mathtech.org

Handouts and Worksheets in PreTeXt

We all know that PreTeXt is great for writing textbooks. But did you know that it can also be used to create small, standalone course materials? Perhaps you want to create an in-class activity to en...

0208

Oscar Levin @oscarlevin.com · 13/08/2025

Nope, Calculus 1 and Abstract Algebra. Real analysis would be a lot of fun though.

210

Oscar Levin @oscarlevin.com · 13/08/2025

I was thinking QUBES hub as well.

010

Oscar Levin @oscarlevin.com · 12/08/2025

I'm not looking to rank courses. I'm hoping to find well written learning targets to help me build my specification-based grading course. And hopefully help other instructors do the same. Writing good, assessable learning targets is hard!

110

Oscar Levin @oscarlevin.com · 12/08/2025

This fall I'm going to use master/specification grading in two new courses. So can someone remind me where the big online repository of learning targets for all math courses is? Or if there isn't one, could someone please make that? Or help me make it? #MathSky, #iTeachMath

520

Oscar Levin @oscarlevin.com · 02/08/2025

Wow, that output looks amazing! What typesetting system are you using?? 😁

150

Oscar Levin @oscarlevin.com · 29/07/2025

This sudoku is full of #math lessons: logic, combinatorics, symmetry, and joy. Try it here: sudokupad.app/qt0xjevecl. Then watch this: youtu.be/ddnLr8jWNeY?...

sudokupad.app

Hypnotic Suggestion by Atticus837 (Sven's SudokuPad v0.591.4)

130

Oscar Levin @oscarlevin.com · 14/07/2025

Zero dates back to the early days of Wimbledon, when a homophobic sportscaster was uncomfortable declaring the score Love-Love

070

Oscar Levin @oscarlevin.com · 10/07/2025

The better question, "if you are not able to stop the flow of asylum seekers, do you think the US has enough insane asylums to hold all of them?"

000

Oscar Levin @oscarlevin.com · 19/06/2025

This is a great question. For me, it means I see how I could teach the concept. I can see the whole story arc of how the mystery fits together.

000

Oscar Levin @oscarlevin.com · 15/06/2025

Clearly they knew you wanted to decorate with purple roots. That's what you get for grocery shopping at Hobby Lobby

040

Oscar Levin @oscarlevin.com · 10/06/2025

I tried to capture some of the advice from a seminar by an accessibility expert as part of the PreTeXt guide. See Subsection 4.40.3: Advice for Writing Image Descriptions pretextbook.org/doc/guide/ht...

pretextbook.org

AccessibilityPreTeXt logo

173

Oscar Levin @oscarlevin.com · 19/05/2025

The easiest way to use pandoc for pretext is to use the feature in vs code and pretext-tools. Assuming you have pandoc installed, search for the command pretext: convert file to pretext. There are currently too many conversions in pretext-tools. I need to clean that up.

050

Reposted by Oscar Levin

doom boy @doomboy.bsky.social · 04/05/2025

if you click the first hyperlinked word on any wikipedia article, and then click the first hyperlinked word on the next one, and so on, within 10-15 clicks you will get to the wikipedia article for philosophy. and i think that's beautiful

219924

Oscar Levin @oscarlevin.com · 04/05/2025

And yet, the recent piece circulating from popular science includes, "“[I don’t] believe in irrational numbers,” he said." www.popsci.com/science/alge...

popsci.com

Mathematician solves algebra's oldest problem

All you need to do is toss out irrational numbers.

010

Reposted by Oscar Levin

MathTech.org @mathtech.org · 01/05/2025

Accessible Course Materials with PreTeXT Virtual Workshop: Monday, May 19 to Thursday, May 22, 2025; 12-2pm EDT Not only free, but limited participant stipends are available! Info at mathtech.org/workshops/ma...

mathtech.org

Accessible Course Materials with PreTeXT Workshop

Showcasing open-source technologies that innovate mathematics education and communication.

097

Oscar Levin @oscarlevin.com · 29/04/2025

Are we sure we aren't living in Fight Club? Or am I not supposed to talk about that?

000

Oscar Levin @oscarlevin.com · 20/04/2025

I hear, "Happy Easter to those who celebrate it. And to everyone else, enjoy celebrating Hitler's birthday."

010

Oscar Levin @oscarlevin.com · 19/04/2025

I wonder why the Democrats aren't trying to change his mind more, given how easy it is to do. Seems like with the right level of flattery and cleavage, he could be leading the Democratic party by now.

030

Oscar Levin @oscarlevin.com · 18/04/2025

This is a good point. I keep forgetting about this as an option. I'll try to add it to my post.

000