A probability problem from James Tanton’s “Solve This”

We were unpacking a bunch of books today and ran across James Tanton’s Solve This and Theoni Pappaas’s The Adventures of Penrose The Mathematical Cat. I asked the boys to find a problem they’d like to talk about and they found a gem from Tanton’s book: 16.1 A Fair Game? Peter has ten coins, Pennelope … Continue reading A probability problem from James Tanton’s “Solve This”

Revisiting an old James Tanton / James Key pyramid project

Several months ago this tweet – inspired this project: A neat geometry project inspired by a James Tanton / James Key tweet Fast forward a few months today and I’m actually studying pyramids with my older son and it seemed like a great time to revisit the project. Because my younger son is also starting … Continue reading Revisiting an old James Tanton / James Key pyramid project

An old James Tanton-inspired 3d printing project pays off today!

Last summer James Tanton posted this problem on Twitter: That problem led to a super fun 3D printing project with the boys: James Tanton’s Geometry Problem and 3D Printing To my great (and wonderful) surprise, today my older son and I came across a similar problem from an old AMC 10: Problem #17 from the … Continue reading An old James Tanton-inspired 3d printing project pays off today!