Christopher Danielson

@Trianglemancsd

Working and playing at the intersection of mathematics and children's minds. Author at Stenhouse. Public Math. (Find me on blue sky, where I am triangleman.)

St Paul, Minnesota talkingmathwithkids.com Joined December 2009

969 Following 21K Followers 24K Posts

Latest posts 5

Christopher Danielson @Trianglemancsd Apr 25

Just popping in real quick with a new post on an old blog.

With All Due Respect

christopherdanielson.wordpress.com/2026/04/25/wit…

christopherdanielson.wordpress.com With All Due Respect With all due respect, Mr. Secretary, a follow-up question for you. If that $600 drug were only discounted 50% instead of 600%, how much would it cost?

Christopher Danielson @Trianglemancsd Apr 20, 2023

Hey @mctm_mn friends! Be careful out there!

I-35 conditions change abruptly about 20 miles south of Duluth. Be safe!

#mctmduluth

Christopher Danielson @Trianglemancsd Apr 20, 2023

Just fyi math teachers, this weeks Ted Lasso features a trippy Donald Duck in Mathmagicland sequence.

Christopher Danielson @Trianglemancsd Apr 19, 2023

Some days in this job, supporting your colleagues means going back through your Twitter feed for examples that illustrate very particular math ideas.

And SOME days, that leads you to this kind of beauty!

Chris Nho @nhoskee Sep 2, 2018

My favorite noticing/wondering from @MathOnAStick today

View quoted post on X

Christopher Danielson @Trianglemancsd Apr 18, 2023

#unitchat

Brian Bushart 🏳️‍🌈 @bstockus Apr 18, 2023

Me: "Why doesn't the denominator change?"

Student: "Because that's our unit. It's not changing."

#ElemMathChat
View quoted post on X