On vehicles and the meanings of words
The following is an extended excerpt of a cover letter for Is It a Vehicle?, a book I have play-tested many hundreds of times in a wide range of situations over the last five-plus years and not yet found a publishing home for. I hope you enjoy the writing, and I...
Minnesota’s Largest Pattern Block Mosaic
To celebrate ten years of Math On-A-Stick, we built Minnesota's Largest Pattern Block Mosaic yesterday at the Minnesota State Fair. Careful study of this next image reveals 24 jaggedy "rows" of 7 large hexagons, totaling 168 regular hexagons (with a few more than...
Questioning Piaget
Note: An earlier version of this post was part of the Talking Math with Your Kids newsletter. The provider I used for that newsletter ceased operating a while back, but I saved all of the content and will republish some of that writing here on the blog from time to...
Two competing theories, resolved
I wrote about two competing theories recently. Each is an answer the question Why do you never see a square on the rectangle page of a shapes book for young children? That question stands in for lots of other specific questions, such as Why do counting books tend...
