Blog
Coming SoonAugust 22, 2026
Why Leaves Change Color, and Why That Is a Mathematics Question
A Math Letter about pattern, timing, and the difference between describing and predicting.
Coming SoonAugust 12, 2026
The Question a Child Asks Is Rarely the Question They Mean
On why the wrong question is more informative than the right answer.
Coming SoonJuly 2, 2026
Why We Number Things Before We Name Them
On observation as a discipline, and why naming too early stops people looking.
Coming SoonMay 21, 2026
What a Model Does Not Know It Does Not Know
On using language models in education, and the specific failure that makes it dangerous.
Coming SoonApril 16, 2026
Free Is Not the Same as Open
On the difference between removing a price and removing a barrier.
Coming SoonFebruary 19, 2026
Six Thousand Books Is an Argument, Not a Boast
On why the size of a curriculum matters, and what it does not prove.
Coming SoonDecember 4, 2025
The Part of a Lesson That Cannot Be Marked
On assessment, and the work that disappears because there is no way to score it.