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2026

Book Review: The Proof in the Code original ↗

24 May 2026

Connecting Classroom Math to AI — NCTM New Orleans original ↗

15 Mar 2026

Math Photo — Snow Array original ↗

1 Feb 2026

Angle Sums and Pythagorean Triples original ↗

11 Jan 2026

2025

2025 — Year in Review original ↗

31 Dec 2025

The Best Advice I Got in 2025 original ↗

28 Dec 2025

Books I Read in 2025 original ↗

21 Dec 2025

AI-Generated Letters of Recommendation original ↗

22 Nov 2025

Workshop — A One-Problem Tour of Statistics original ↗

3 Nov 2025

Strogatz, the NYT, and Triangular Numbers original ↗

12 Oct 2025

Strogatz, the NYT, and Mathematical Packing original ↗

2 Oct 2025

Good AI, Bad AI original ↗

28 Sept 2025

Strogatz, the NYT, and the Golden Ratio original ↗

24 Sept 2025

Strogatz, the NYT, and Taxicab Geometry original ↗

17 Sept 2025

Building Thinking Classrooms original ↗

7 Sept 2025

Appearing on MoMath’s QED original ↗

13 Aug 2025

Profile on COMAP original ↗

18 Jul 2025

Decision Education Webinar original ↗

3 Jul 2025

2024

Workshop — Applying Math Through Modeling original ↗

2 Oct 2024

Revolutionary Ideas in Math Education original ↗

29 Sept 2024

Math That Connects Where We’re Going to Where We’ve Been — Quanta Magazine original ↗

24 Mar 2024

Workshop — The Geometry of Statistics original ↗

14 Feb 2024

People Tell Me My Job is Easy original ↗

28 Jan 2024

The Surprising Simple Math Behind Puzzling Matchups — Quanta Magazine original ↗

26 Jan 2024

Math Photo: A Most Mathematical Building original ↗

21 Jan 2024

My Tests are So Hard original ↗

14 Jan 2024

Taught Helplessness original ↗

7 Jan 2024

2024 and Differences of Squares — Solution original ↗

5 Jan 2024

2024 and Differences of Squares original ↗

1 Jan 2024

2023

Books I Read in 2023 original ↗

29 Dec 2023

2023 — Year in Review original ↗

27 Dec 2023

ChatGPT in Geometry Class original ↗

17 Dec 2023

Pierre de Fermat’s Link to a High School Student’s Prime Math Proof — Quanta Magazine original ↗

27 Nov 2023

NCTM 2023 original ↗

22 Oct 2023

This Student Gets Me original ↗

15 Oct 2023

Math Photo: Water Circles original ↗

8 Oct 2023

Math that Moves the Needle — Quanta Magazine original ↗

1 Oct 2023

Video — In Conversation with Manil Suri original ↗

24 Sept 2023

Sharing Instructional Materials original ↗

17 Sept 2023

Math Photo: Translation/Projection original ↗

10 Sept 2023

Jaipur Literature Festival New York original ↗

4 Sept 2023

Math Patterns That Go On Forever but Never Repeat — Quanta Magazine original ↗

24 Aug 2023

Please Teach the Vertical Line Test original ↗

20 Aug 2023

Charter Schools and Cafeterias original ↗

15 Aug 2023

How to Optimize Traffic original ↗

8 Aug 2023

Math That Lets You Think Locally but Act Globally — Quanta Magazine original ↗

24 Jul 2023

The Symmetry That Makes Solving Math Equations Easy — Quanta Magazine original ↗

25 Mar 2023

Workshop — Learning to Love Row Reduction original ↗

16 Feb 2023

The Basic Algebra Behind Secret Codes and Space Communication — Quanta Magazine original ↗

24 Jan 2023

2022

2022 — Year in Review original ↗

31 Dec 2022

2022 in Tweets original ↗

20 Dec 2022

Review — Math Games with Bad Drawings original ↗

17 Dec 2022

The Geometry of Brownie Bake Offs — Quanta Magazine original ↗

22 Nov 2022

Workshop — The Geometry of Linear Algebra original ↗

9 Nov 2022

How Big is Infinity? — Quanta Magazine original ↗

2 Oct 2022

How Can Infinitely Many Primes Be Infinitely Far Apart — Quanta Magazine original ↗

22 Jul 2022

No Confidence in Testing Inference on the Regents Exam original ↗

18 Jul 2022

Is 2+3i an Imaginary Number?original ↗

16 Jul 2022

When a Model Isn’t a Model original ↗

14 Jul 2022

Why Claude Shannon Would Have Been Great at Wordle — Quanta Magazine original ↗

31 May 2022

Introducing Painless Statistics original ↗

23 May 2022

Math Photo: Geology / Geometry original ↗

10 Apr 2022

What a Math Party Game Tells Us About Graph Theory — Quanta Magazine original ↗

25 Mar 2022

The All 1s Vector original ↗

22 Mar 2022

Making Math by Design — Queen’s College original ↗

21 Mar 2022

22022022 original ↗

22 Feb 2022

Pitfalls for Parents — MoMath original ↗

3 Feb 2022

Why Triangles are Easy and Tetrahedra are Hard — Quanta Magazine original ↗

2 Feb 2022

2021

2021 in Tweets original ↗

30 Dec 2021

2021 — Year in Review original ↗

28 Dec 2021

Books I Read in 2021 original ↗

26 Dec 2021

Math Photo: Triangles and Reflections original ↗

5 Dec 2021

What Hot Dogs Can Teach Us About Number Theory — Quanta Magazine original ↗

30 Nov 2021

Workshop — It’s All Linear Algebra original ↗

8 Nov 2021

Back in the Classroom — Week 3 original ↗

31 Oct 2021

Teaching Triangle Angle Sum original ↗

26 Oct 2021

10/22/2021 — Happy Permutation Day!original ↗

22 Oct 2021

Back in the Classroom — Week 2 original ↗

26 Sept 2021

The Simple Math Behind the Mighty Roots of Unity — Quanta Magazine original ↗

24 Sept 2021

Back in the Classroom — Week 1 original ↗

19 Sept 2021

Let’s Remember the Year Everyone Wants to Forget original ↗

1 Aug 2021

Roundtable Discussion on Math Education in the US original ↗

27 Jul 2021

How to Find Rational Points Like Your Job Depends On It — Quanta Magazine original ↗

25 Jul 2021

Essay on MAA’s MathValues.org original ↗

22 Jul 2021

Math Photo: Spherical Garden original ↗

11 Jul 2021

Regents Recap, January 2020: Isn’t the Quadratic Formula Completing the Square?original ↗

7 Jul 2021

Regents Recap, January 2020: What is an Irrational Number?original ↗

5 Jul 2021

Ends and Beginnings original ↗

26 Jun 2021

Questions and Answers original ↗

19 Jun 2021

The Gift of Hope original ↗

13 Jun 2021

Who Needs Trig Sub? Part 2 original ↗

10 Jun 2021

What Would You Keep?original ↗

6 Jun 2021

Who Needs Trig Sub?original ↗

3 Jun 2021

Everything I Didn’t Do original ↗

29 May 2021

Something I’ve Missed original ↗

24 May 2021

A Bad Lesson original ↗

15 May 2021

How to Solve Equations That Are Stubborn as a Goat — Quanta Magazine original ↗

10 May 2021

Covering the Curriculum original ↗

8 May 2021

The Last Day original ↗

1 May 2021

“What Did I Do Last Year?”original ↗

25 Apr 2021