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Christopher Danielson

@triangleman.bsky.social
1.6K followers 350 following 3.5K posts

Kids, math, fruit, words Saint Paul, MN talkingmathwithkids.com

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Christopher Danielson @triangleman.bsky.social · 11h
If the hot dog shop is closed, we might have to get them in bulk from the deli counter. I guess that’d be the wurst-case scenario
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Christopher Danielson @triangleman.bsky.social · 29/09/2026
Done and done. Go get ‘em, Ty!
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MInnesota Council of Teachers of Mathematics (MCTM) @mctm-mn.bsky.social · 28/09/2026
What are the most common questions the MDE Assessment team has received about the Minnesota Comprehensive Assessmetns (MCAs) both III and IV? What are the answers to those questions? FREE webinar answering (hopefully) all your questions about MN's MCA assessments. #mctm mctm.org/Events
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shiftedshaped - emily mae @shiftedshaped.bsky.social · 24/09/2026
Schedules just dropped. It’s good, people. Check it! We’ll be bopping around with tune plans of Nur-D at Urban Lights & 26 Bats at @blackhartstp.com, & Sawtooth Witch at @turfclub.bsky.social. Will you be out enjoying community? A tiiiiime will be had all around town! The festival has everything.
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John Golden @johngolden.bsky.social · 22/09/2026
nice post from @zandrade.bsky.social about a life goal of mine, @triangleman.bsky.social's Math on a Stick. mathematicallyeducated.com/2026/09/20/m...
mathematicallyeducated.com
Math and the Minnesota State Fair - Mathematically Educated
I am excited that I had the opportunity to visit with Christopher Danielson in person and see the mathematical goodness that is Math-on-a-Stick at the Minnesota State Fair later this month. Math-on-a-...
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John Golden @johngolden.bsky.social · 21/09/2026
Our mighty li'l math conference in Feb 2027 now open for proposals. Please come and share! #miched #iteachmath www.gvsu.edu/mathinaction/
gvsu.edu
Math in Action
Math in Action 2027 conference at GVSU seeks presenters! Share math education insights.
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Mike Deutsch @mdeutschmtl.bsky.social · 19/09/2026
Made a new math-edu friend this week at the always-fun #MathRoutineCollaborative... Do y'all know @janakialeena.bsky.social ? Check out her classroom reflections at thinkingwithchildren.com ... they're really thoughtful and well written. 🤓 ... /
thinkingwithchildren.com
Thinking With Children
Teaching and learning mathematics with children
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Christopher Danielson @triangleman.bsky.social · 18/09/2026
Also we should explore the possibility that Monopoly is a card game, not a board game.
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Christopher Danielson @triangleman.bsky.social · 18/09/2026
Uh oh yall! What about Twister?!?!?
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ꭓle Ormsby 𓆙 @e-infinity.space · 18/09/2026
Sometimes you just need to make a 76"x50" poster of all 1044 unlabeled graphs on 7 vertices ordered by the subgraph relation. 🧮
full Hasse diagram -- it's big!detail of bottom left of Hasse diagramdetail of middle portion. you can see two rows of 9 graphs on 7 vertices and a bewildering number of covering relations.the top 5 rows of the Hasse diagram with K_7 at the top.
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Christopher Danielson @triangleman.bsky.social · 18/09/2026
With gratitude to colleague Tony, I am Now puzzling over what counts as a board game. www.mentalfloss.com/geography/st...
mentalfloss.com
Every State's Favorite Board Game, Ranked By Most Popular
See which board game holds a monopoly in your home state according to new ranking data.
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Amie Albrecht @nomadpenguin.bsky.social · 18/09/2026
@triangleman.bsky.social I feel like this is in your wheelhouse.
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Christopher Danielson @triangleman.bsky.social · 18/09/2026
Northern Spy truth. Also Cortland
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Lauren in Saint Paul @comobelladonna.bsky.social · 15/09/2026
🚨BSKY MEETUP ALERT🚨 (in which we will attempt to drink enough beer to save Summit Brewery) September 29th, 4:30pm @ Saint Paul Tap!
Save our Summit Brewery 
One city’s attempt to drink $8 million worth of beer
September 29th 4:30pm @ Saint Paul Tap
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Liesl McConchie @lieslmcconchie.bsky.social · 16/09/2026
I could talk to Zak Champagne for days. You can now listen to our latest conversation on his podcast, Curiosity Continued, to explore the ideas behind his book, Curious Kids in the Math Classroom. My episode is out TODAY! Find it on YouTube or wherever you listen to podcasts!
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Tracy Zager @tracyzager.bsky.social · 13/09/2026
Since I dusted off my social tonight, I wonder if anyone around here likes to think about student work in math like we used to via #mtbos and #iteachmath on the bird app? If anyone's up for it, I would LOVE to know what questions you might ask these two different students. Both new 5th graders.
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Christopher Danielson @triangleman.bsky.social · 11/09/2026
Hot take: “inflection point” is a lazy and meaningless metaphor for organizational or systemic change. Doubly so if you are discussing math learning.
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Christopher Danielson @triangleman.bsky.social · 09/09/2026
Lolol yes. “Why don’t you try just telling kids stuff?”
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Christopher Danielson @triangleman.bsky.social · 09/09/2026
This is beautiful. The quote had me expecting the kid to change for the swim meet. But she does not and it is beautiful.
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Chris Nho @nhoskee.bsky.social · 09/09/2026
I had such a great time joining Zak Champagne for Curiosity Continued, a new podcast series exploring the ideas behind his book Curious Kids in the Math Classroom. My episode drops today! Check it out on YouTube or wherever you listen to podcasts. youtu.be/HfZQCjx56t0?...
youtu.be
1 Curiosity Continued Final Video Chris Nho Foreword
YouTube video by Zachary Champagne
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The Cuisenaire Company @cuisenaireco.bsky.social · 08/09/2026
Term time has well and truly begun. Don't forget to get a set of #cuisenairerods for your child to support their mathematical literacy! #mathsplay #cuisenaire #dyscalculia #mathsed cuisenaire.co.uk/product-cate...
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John Golden @johngolden.bsky.social · 07/09/2026
Happy Labor Day from Nancy and Caroline Cash.
Nancy says 8 hours for work, rest and what we will. Happy Labor Day!
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Christopher Danielson @triangleman.bsky.social · 03/09/2026
Evidence of living the good life right here!
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Christopher Danielson @triangleman.bsky.social · 03/09/2026
Ye Olde Mill is not yours to understand. It exists outside the realm of logic or sense making. Ye Olde Mill is yours to experience. It is wonder. Wonder that is destroyed by your questions and expectations.
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Jenna Cruz @jennacruz.bsky.social · 30/08/2026
Me at #Math on a Stick from Friday. I'm excited to volunteer here next week!
Jenna posing by the Math on a Stick entrance at the MN State Fair
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Chris Steller @chrissteller.bsky.social · 30/08/2026
The front of the line at Sea Salt connects to the back of the line at Crop Art by way of a wormhole I don’t make the rules
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Christopher Danielson @triangleman.bsky.social · 29/08/2026
No clue, but after looking up “tanghulu” I now understand it to be the glass-sugar coated fruit that spouse has been carrying on about needing to try
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samjshah.bsky.social @samjshah.bsky.social · 28/08/2026
It is finally done! My Truchet tiles stained glass piece. I explored Guillaume Pelletier-Auger’s site ages ago and was inspired. pelletierauger.com/en/projects/... #mathart #mtbos I feel really proud even though it’s crooked in places; I’m still such a novice. But it’s so beautiful to me!
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Christopher Danielson @triangleman.bsky.social · 28/08/2026
Before the great sky monster has eaten it completely!!!
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Christopher Danielson @triangleman.bsky.social · 27/08/2026
It occurred to me today that I don’t know a definition for “spiral”. And that maybe a circle is a degenerate spiral?
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Christopher Danielson @triangleman.bsky.social · 27/08/2026
An 8 year old on the stepping stones. Starts on the stone labeled “1”. Says “one” as she steps on the 2 stone. Continues this way, with her count bigger than the stone number at each step until saying “twelve”.
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Christopher Danielson @triangleman.bsky.social · 27/08/2026
Teen walks up to pentagon table at Math On-A-Stick. “What are these, Penrose tiles?” In my head, “Take a seat, son. Let’s do some learning together.”
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Amie Albrecht @nomadpenguin.bsky.social · 27/08/2026
I love every single thing about this. It’s so clever, so creative, so thoughtful and so joyful. Just wonderful.
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Lara! @laramathcalf.bsky.social · 25/08/2026
I think there was a reason behind the IM change of WODB to “which three go together” and I wanted to give it a chance to be just the same but it’s not. Harder to write down student thinking, more difficult to ensure that all the different pictures are addressed. #ITeachMath
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Henri Picciotto @hpicciotto.bsky.social · 24/08/2026
New post, responding to @mpershan and @Mathforlove : Makeover or Heart Transplant? blog.mathed.page/2026/08/24/m... #mtbos #iteachmath #mathed
blog.mathed.page
Makeover or Heart Transplant?
For several years, I was quite active on Twitter. What got me to stick with it (until its takeover) was that it was a good place to discuss math teaching with like-minded educators. In fact, it was…
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David K Butler @davidkbutler.bsky.social · 23/08/2026
On the third anniversary of me starting to create Maths Sheep Play Sheep, a blog post about its creation, and the meaning and decisions behind every sheep. davidkbutler.xyz/2026/08/23/m... #MathSky
davidkbutler.xyz
Maths Sheep Play Sheep
It’s Children’s Book Week in Australia, and so it’s a good time to write a little something about a project I did in honour of Book Week in 2023: a picture book called “Math…
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Christopher Danielson @triangleman.bsky.social · 22/08/2026
My toxic trait is that I think 1 is the best prime because it is the most prime.
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Dara Moskowitz Grumdahl @deardara.bsky.social · 22/08/2026
Optimist: The cup is half full Pessimist: The cup is half empty Restaurant critic: This cup is actually pretty average, but if you just go a little down the street oh my God, you have to try this cup!
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Dr. Maria at Natural Math @maria-naturalmath.bsky.social · 22/08/2026
Optimist: the glass is half full. Pessimist: the glass is half empty. Game theorist: Suppose two people are going to play Half-Empty/Half-Full Dilemma Game repeatedly...
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Dr. Halcyon Foster @infinigon.bsky.social · 22/08/2026
Optimist: The cup is half full Pessimist: The cup is half empty Cheeky math educator: what was the age of the bus driver?
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Christopher Danielson @triangleman.bsky.social · 22/08/2026
Optimist: The cup is half full Pessimist: The cup is half empty Calculus teacher: assuming a conical cup, what is h?
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Shelby Strong 💗💜💙 @sneffleupagus.bsky.social · 21/08/2026
Shout to @triangleman.bsky.social for rescuing the WODB site so I had images to use tonight! Talkingmathwithkids.com/wodb
talkingmathwithkids.com
wodb | Talking Math With Your Kids
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Shelby Strong 💗💜💙 @sneffleupagus.bsky.social · 20/08/2026
The last few weeks have been a whirlwind but HEY GUESS WHAT..... Math Routine Collaborative is meeting TONIGHT! See you at 8ET if you can make it!
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Christopher Danielson @triangleman.bsky.social · 20/08/2026
The Three-Ever Pack!
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Christopher Danielson @triangleman.bsky.social · 20/08/2026
Look out! Toilet paper math just leveled up!
An enormous toilet paper package labeled “Forever Roll Go up to one month before changing your roll”. The fine print states that there are three rolls per pack and 1700 two-ply sheets per roll. A shelf label indicates that the pack costs 33.49 and there seems to be a unit price of 1.97 but the unit is tiny and illegible to my aging eyes
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Kelly Barnhill @kellybarnhill.bsky.social · 18/08/2026
Can anyone in the Boston area share recommendations for bakeries that do local deliveries? Cupcakes, specifically? Hoping to get a sweet treat for my son's birthday, even though he lives so very far away
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Valerie Bolling @valeriebolling.bsky.social · 16/08/2026
THREE MONTHS from today's date this book will be out in the world on November 16. I look forward to sharing it with teachers and their students. For more information about the book: www.valeriebolling.com/writing-poet... @kassiaowedekind.bsky.social @stenhousepub.bsky.social
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Gabrielle Plastrik @gplastrik.bsky.social · 16/08/2026
#iteachenglish
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Jenna Laib @jennalaib.bsky.social · 16/08/2026
So you want to share slow reveal graphs with colleagues! 📊 I created some slide decks for people to use at faculty meetings at PLCs (openly licensed, CC-By 4.0). They don't recreate the full experience of professional learning I facilitate, but they're a nice invitation into the work. Link below!
slowrevealgraphs.com
Free Resource: Slide Decks For Faculty Meetings & PLCs
by Jenna Laib So you want to share slow reveal graphs with colleagues! I am thrilled! While I'm the person that popularized the routine, I did not create it on my own, and I hope that it has a life beyond me and my collaborators. After I give a session -- whether it's at a conference or a private PD -- there are typically a few requests for slides.
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