Glenn Waddell, Jr. Ph.D.
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gwaddell.bsky.social
Glenn Waddell, Jr. Ph.D.
@gwaddell.bsky.social
800 followers 1.2K following 180 posts
Finding ways to put people first for my PSTs and ISTs. Teaching Associate Prof in a STEM Education program. I blog at https://mrwaddell.net/blog. My comments are my own. he/him. #MTBoS (Math TEACHER Blog o'Sphere) #ITeachMath #EduSky #MathSky
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Reposted by Glenn Waddell, Jr. Ph.D.
nctm.org
The latest issue of MTLT is out now! 🌳

The Front & Center article explores how teachers can make informed decisions about when to move on in a lesson.

🔒 NCTM Members can access now: nctm.link/wkL2v
MTLT Cover Pacing in a Discourse-Rich Lesson
November 5, 2025 at 8:23 PM
gwaddell.bsky.social
@tguindon.bsky.social @annlovesmaths.bsky.social @thestarcaller.bsky.social @ash-bans.bsky.social I just found the 3rd book by Dr. Shih. It is called MathGraf, and the single copy my library could find that exists *only* in a library in Hong Kong. In negotiations for a scanned table of contents now.
November 14, 2025 at 5:44 PM
gwaddell.bsky.social
This is FABULOUS! What a great way to show off what Dr. Shih did in his book. Love it! Thank you Tim.
tguindon.bsky.social Tim Guindon @tguindon.bsky.social · 3d
I had some fun recreating this visual, with some added interactive elements, in @desmos.com www.desmos.com/calculator/m... #mathsky
November 12, 2025 at 10:59 PM
gwaddell.bsky.social
I have two books by an author, Keh-Gong Shih, pub in 1996 that are just brilliant! But they are definitely lost. The first is PIctorial Mathematics: Patterns. It is fabulous! full of images like this. He created his own software called Mathgraf which is used to generate the images. #mathart #mtbos
November 11, 2025 at 9:22 PM
Reposted by Glenn Waddell, Jr. Ph.D.
ddmeyer.bsky.social
👋 Here is a zip file with all the handouts & slides people uploaded from the NCSM & NCTM annual conferences last month. Scraped the conference website. 400 files. 1GB. Who loves you? Me, that's who. limewire.com/d/nQXRY#AX97...
Download ncsm-nctm-2025.zip | LimeWire
Download ncsm-nctm-2025.zip on LimeWire
limewire.com
November 7, 2025 at 9:51 PM
Reposted by Glenn Waddell, Jr. Ph.D.
miriamposner.com
Eminently reasonable proposed principles for professors’ use of AI, from a student refusinggenai.wordpress.com/2025/08/29/a...
• Professors should never put a student's words or work into an AI software without their consent. • Professors should also be transparent about their Al usage with grading, curriculum building, and any other way they might use it in their teaching. • If a professor does use Al chatbots in the classroom, they should explain their reasoning behind this decision and how its usage will help students meet learning outcomes. • Professors should additionally respect a student's choice to refuse Al. To do this, it would be ideal that they have assignments that students can choose from that do
October 31, 2025 at 3:10 PM
Reposted by Glenn Waddell, Jr. Ph.D.
teacher2teacher.bsky.social
👇 Three little letters that can make all the difference:

(Inspiration via T Ms. Ivey)
Bulletin board display is titled " ... YET: The Most Powerful Addition" and reads "I don't get it + yet = Optimism; I can't do this + yet = Perseverance; I can't do math + yet = Growth Mindset."
October 31, 2025 at 12:19 AM
Reposted by Glenn Waddell, Jr. Ph.D.
mfannie.bsky.social
Think a #NoticeWonder shirt would be awesome? It could be a reality if you move fast! The store is open today through Nov 9. Hopefully enough styles, sizes, and colors to suit everyone. #ITeachMath #MTBoS
A picture showing three shirts and a onesie, with text that reads Notice and Wonder Shirts, Men's, Women's, Youth, Toddler, Onesies, Store open October 29-November 9, $16-21, all profits go to TODOS.
October 30, 2025 at 4:13 AM
Reposted by Glenn Waddell, Jr. Ph.D.
gizem-karaali.bsky.social
Hi Blue Sky! I edit the Journal of Humanistic Mathematics. We publish articles, essays, #fiction & #poetry on doing, teaching & living of #mathematics. So far we had more than 850K full-text downloads of our content - why not check us out? scholarship.claremont.edu/jhm/ #math #openaccess #mathart
Journal of Humanistic Mathematics - an online-only, open access, peer reviewed journal | Current Journals | Claremont Colleges
Journal of Humanistic Mathematics - an online-only, open access, peer reviewed journal published by the Claremont Colleges Library.
scholarship.claremont.edu
September 30, 2025 at 4:42 PM
Reposted by Glenn Waddell, Jr. Ph.D.
divbyzero.bsky.social
I met with my knot theory independent study students today. The topic: braids. I broke out these "BraidTiles" that I made several years ago. You can download a printable pdf here (recommendation: print them on cardstock): divisbyzero.com/2019/05/01/b...
A photo of BraidTiles
October 29, 2025 at 7:09 PM
Reposted by Glenn Waddell, Jr. Ph.D.
motivickyle.bsky.social
This is a real sign from a real deli near the Wesleyan math department, and they put it up because the mathematicians were too engrossed in their mathematics discussions to efficiently order sandwiches. www.cbc.ca/radio/asitha...
October 29, 2025 at 8:21 PM
Reposted by Glenn Waddell, Jr. Ph.D.
rajraizada.bsky.social
The new surface-colouring option in @desmos.com 3D allows a cute way of visualizing conic sections.
www.desmos.com/3d/fiv5gnltdl
(The option to have translucent surfaces doesn't save with the graph itself, so needs to be re-toggled on. It's important for seeing the full curves)
#MathSky #iTeachMath
October 29, 2025 at 3:38 PM
Reposted by Glenn Waddell, Jr. Ph.D.
patoss-dyslexia.bsky.social
📣 Live FREE Webinar Series for Educators this November designed for parents, teachers, SENCos, and support staff who want to strengthen their knowledge and classroom practice around maths learning differences.

Book now: www.patoss-dyslexia.org/Live-Webinar...

#Dyscalculia #MathsEducation #SEN
October 29, 2025 at 12:15 PM
Reposted by Glenn Waddell, Jr. Ph.D.
iteachkids.bsky.social
Great resource for students with dyscalculia.
A context dependent calculator: dyscalculator.app

#disablities #iteachkids #mtbos #MathSky
October 29, 2025 at 1:00 PM
Reposted by Glenn Waddell, Jr. Ph.D.
ridermeister.bsky.social
@ukmathstrust.bsky.social are here!

#MathsToday #AlevelMaths #UKMathsChat
October 29, 2025 at 1:25 PM
Reposted by Glenn Waddell, Jr. Ph.D.
nrennie.bsky.social
Slides: nrennie.rbind.io/talks/yss-ya...
Beyond the Basics: Data Visualisation – Nicola Rennie
In this talk, I’ll showcase why you should visualise data, present some guidelines for making more effective charts, before discussing examples of good and not so good charts.
nrennie.rbind.io
October 28, 2025 at 1:29 PM
Reposted by Glenn Waddell, Jr. Ph.D.
msdimaria.bsky.social
#NCTMATL25 reminded me that conferences are really about people. The sessions are great, but the best moments happen when you connect with fellow educators, share ideas, and leave inspired. Grateful for every conversation in Atlanta! #EdChat #MathEd #edusky
October 27, 2025 at 2:51 AM
Reposted by Glenn Waddell, Jr. Ph.D.
mtep2-0math.bsky.social
Math teacher shortages continue to grow nationwide. The CBMS 2024 Report calls for urgent action to recruit & retain qualified math teachers. Explore key findings & solutions here ➡️ bit.ly/mtepCBMSrrr

#MTEP #NCTM #AMTE #NCSM #MTBoS
October 27, 2025 at 5:02 PM
Reposted by Glenn Waddell, Jr. Ph.D.
abeljennifer.bsky.social
🎉 New blog alert! 🚀 "Synthetic Division, Nix the Tricks, and Conversations that Matter" Reflections on our Nix the Tricks book study. 👉 Read more: mathsational.blogspot.com/2025/10/synt...

#MathEd #TeachingStrategies #KeepTheWhy #iTeachMath #MTBoS
Synthetic Division, Nix the Tricks, and Conversations that Matter
I used to declare that I hated synthetic division. It always felt like a jumble of steps with no real meaning behind them, and my students...
mathsational.blogspot.com
October 27, 2025 at 10:47 PM
Reposted by Glenn Waddell, Jr. Ph.D.
todos-math.bsky.social
Join the TODOS Book Club! Explore Antiracist Mathematics Education: Stories of Acknowledgment, Action & Accountability (on Amazon).

Commitment: Readings & guided discussions over several sessions.

Register now for Nov 19, 2025!
us02web.zoom.us/webinar/regi...

#MathEquity #iTeachMath #EduSky
A flyer for the TODOS: Mathematics for ALL Virtual Book Study. The design features four colorful, student-style paintings arranged in diamond shapes: one shows a blue face, another depicts green and orange trees along a road, a third shows two people in front of a ferris wheel and buildings, and the fourth features an abstract blue-and-white cityscape. The TODOS logo appears on the left, followed by the book title Antiracist Mathematics Education: Stories of Acknowledgment, Action, and Accountability. On the right, green and yellow text reads “Virtual Book Study – Nov 19 | 4:30 PM PT – Section 1: Students.” The overall background is olive green with a diagonal split design.
October 28, 2025 at 1:23 AM
Reposted by Glenn Waddell, Jr. Ph.D.
mdsteele47.bsky.social
It’s amazing to me that we still have people cherry picking what they think qualifies as research-based best practice and castigating @nctm.org based on those biases. Seems a good time to remind everyone that NCTM runs the top tier research journal in the field. #iteachmath
October 25, 2025 at 5:31 PM
gwaddell.bsky.social
This is so important. I wish a teacher had done any of these for me. I just learned coping techniques on my own.
edutopia.org Edutopia @edutopia.org · 20d
For students with dyscalculia, math can feel overwhelming and confusing. Educator Kimberly Fuller has strategies that students can use today to better engage with classroom content. 👇

#MathSky #ITeachMath #SpecialEducation
Understanding How You Can Help Students With Dyscalculia
By providing targeted supports and instruction, teachers can help students with dyscalculia find more comfort and success in math class.
edut.to
October 25, 2025 at 10:35 PM
Reposted by Glenn Waddell, Jr. Ph.D.
davidkbutler.bsky.social
This I posted on Twitter in 2020 is currently experiencing a resurgence.
A screenshot of a Twitter post. It’s from David Butler (me) at 4:55 16/7/2020. The text says: Separating rational functions using partial fractions is a change of basis. I knew this already. But today I realised that this means you can do it WITH A MATRIX. The image shows maths: To separate 3 x + 1 over x+1 times x+2 into partial fractions … 1 over x+1 times x+2 = 1 over x+1 plus -1 over x+2 x over x+1 times x+2 = -1 over x+1 plus 2 over x+2 2 by 2 matrix with first column 1 and -1 and second column -1 and 2 times column vector 1 and 3 = column vector -2 and 5 Therefore 3x+1 over x+1 times x+2 = -2 over x+1 + 5 over x+2
October 25, 2025 at 10:19 PM
gwaddell.bsky.social
Now that #NCTMATL25 is over, The next best thing is to scroll through all of the posts from the hashtag and follow everyone I wasn't already following. Great way to build a wonderful list. Thank you all for a fabulous week!.
October 18, 2025 at 8:31 PM
Reposted by Glenn Waddell, Jr. Ph.D.
johngolden.bsky.social
Happy 50th birthday, fractals! daily.jstor.org/fifty-years-...
Fifty Years of Fractals - JSTOR Daily
A half century ago ago, Benoit Mandelbrot coined the word "fractal" and pioneered a new type of geometry.
daily.jstor.org
August 17, 2025 at 11:36 PM