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Let’s say you’re in the business of selling cookware to people, and you actually care about them a lot. You want to get them the best pots and pans possible. One option is [...]

There’s a new lesson plan just added to our Free Lesson Library: Forty Faces. This has become a favorite of mine for many reasons, and like 1-2 Nim and Pig, it’s [...]

In the recent, excellent article for EdReports, 3 Common Misconceptions About High Quality Instructional Materials, author Janna Chan makes a distinction between fidelity and [...]

I just received this lovely reflection from the Early Family Math newsletter. I’m now on the board at Early Family Math, and I recommend you check it out! The issue of [...]

I recently received this lovely email entitled Prime Climb Success Story. The thinking here is super interesting, in my opinion, and wonderfully idiosyncratic. Can you figure out [...]

There’s a huge, untapped possibility to improve math teaching and learning that is more playful and more rigorous than how most of us learned the subject back in the day.

Here’s how I know, and how to make it happen.

Classes Conjectures and Counterexamples: Tues – Fri, February 22-25 at the Phinney Neighborhood Association in Seattle This is a 4 day camp serving 1st/2nd graders in the [...]