I’ve updated my collection of screenshots. Hopefully useful for anyone who likes seeing lots of colourful geometry puzzles all on the same page. 😁 drive.google.com/file/d/1hVP8tL…

What is a sandwich? Delicious ice-breaker idea for any class where definitions matter. matthematics.com/sandwiches-and…

Recordings of a few talks from the Communicating Mathematics conference are available for a limited time here: sites.google.com/view/communica…

Submitting an abstract speak the Joint Mathematics Meetings? Here are some instructions I wrote up for speakers in an AMS Special Session that I am organizing with Tyler Kloefkorn @tylerkloefkorn, Dave Kung Dave Kung (龚仲孝)🇺🇦☮️, and Blain Patterson! docs.google.com/document/d/1JO…

A straight line is drawn across a square. It is always possible to then draw a path that passes through the midpoint of each and every line segment you see. Is this always possible if you draw 2 lines across a square? 3? Any number of lines?

Boris is the least important part of this picture

I just attempted to compliment a student’s writing by telling them they had a actual argument that they supported. I sincerely think this is a compliment. I need to work on my ability to praise writing.

It's not just the procedures and concepts that matter, but also how they fit together. Thank you for sharing this map!

There are differences in first-term GPA at UIUC across students highest level of math in high school, but overall there are no differences between students who took calculus and students who took statistics in high school. 🧵

The locus of points whose sum of distances from two fixed points is a fixed value is an ellipse. What is the locus of points whose sum of distances from a fixed point and a fixed line is a fixed value?

Come see Jo Boaler and me at the JMM! And afterwards head to @tylerkloefkorn and my session on math education, standards, policy, and politics (room 109)!

An honor to be on this panel! Thank you to Jennifer Schultens and the Joint Committee on Women for organizing.

The status quo of math ed is failing too many students, particularly students from underserved communities. In the latest AMS Notices, we lay out the *hard work ahead* that mathematicians, educators, curriculum designers, and learning scientists agree on! ams.org/journals/notic…

I love this. I've been thinking recently about what it might mean to be productively or unproductively explicit in instruction. To me, this is a great example of productive explicitness when explaining.

How we listen is an answer to the question: "Who gets to participate in math, and what does participation look like?" So fun to present this argument National Museum of Mathematics! And fun to see Philip Keller there. Argument inspired by Gail Burrill at JMM 2019. Thank you Tim Chartier for the invite!

How many regular hexagons can you see? #patternblocks #hexagons #21centuryPB #mathforlove

Our next Pride Month honoree is Pamela E. Harris Pamela E. Harris, PhD! Pamela E. Harris (she/her/ella) is a Mexican-American mathematician, algebraic combinatorics researcher, and Fellow of the AMS & AWM. #PrideMath

A puzzle I want to include in my classes. johndcook.com/blog/2023/06/2…

Excellent thread by Dave

An essay I wrote on Making Mathematical Claims yvonnexlai.com/2023/07/21/mak…