13. Thirteens

Source: NRICH Maths – Elevenses Why did we choose this problem? Good Play With Your Math problems: involve some sort of “play” before choosing a specific strategy. have a low floor (accessibility and entry point) have a high ceiling (need for more complex mathematics) have a succinct, accessible, intuitive wording and visualization This problem meets … Continue reading 13. Thirteens

12. Space Race

On Friday, we shared Play 12. Space Race with our students. Here is a sketch of how this problem developed. 1. Find a fun problem. We met Ben over the summer at a BU discussion workshop, showed him some of our Play problems, and talked about our approach to the project. Later, Ben sent us a problem that … Continue reading 12. Space Race


On the first day of school, I gave my students notecards with their table number. On that card, I asked for their name, 2 examples of everyday problems, and 2 examples of everyday creativity. I gave minimal guidance about what an "everyday problem" or "everyday creativity" is. I took the results and turned them into … Continue reading Everyday

This Year, I’m Excited to Try …

1. Dan Meyer's 5, 4, 3, 2, 1 ... strategy to earn students' attention Getting students' attention in order to transition from group/individual work to whole-class discussion is a classroom management problem that's been bugging me for two years. I've seen and rejected several solutions to this problem because I didn't think I could pull them off; I fear … Continue reading This Year, I’m Excited to Try …