## Big Ice Cubes

Are big ice cubes worth it? Do they dilute your drink slower? Dr. Drang looks at the math behind it. This needs some more investigation. Also: sphere icecubes.

Are big ice cubes worth it? Do they dilute your drink slower? Dr. Drang looks at the math behind it. This needs some more investigation. Also: sphere icecubes.

From a review of a local pizza place: Because of the easily laid out website, I could see that getting three 10-inch pizzas ($6 for plain cheese, $7 for pepperoni, and $9 for a house combo “Carcass” pie with sausage, … Continue reading

So my skallops arrived and I’ve had some time to play with them. Geometry teacher’s dream. Ok. Will the following setup make a polygon if I keep the same angle and keep adding on? What about 30 degrees? 45, 60, … Continue reading

Skallops are a construction toy that uses laser (no sharks) cut wood clips to put together playing cards. They are up on kickstarter now and they can make some incredible shapes. I just ordered a set myself.

From Make. Just discovered this fascinating little geometrical recreation at the 2011 Bridges Math Art Conference galleries. The idea is simple, and the field still fairly unexplored, from what I can tell. What interesting 3D shapes can be made by zipping … Continue reading

To copy Ms. Nowizee from last year, I want to share my Geometry Concept List. This was the first year of Standards Based Grading in Geometry, and before seeing the end of the year results, I’d give it a B (more … Continue reading

Quick post: In NY our end of the year exam is the Regents exam (no comment). The schedule of the exams this year means that I won’t see my students for 13 days. Great. I made up a Geometry Regents … Continue reading

From the brilliant(?) minds at vat19.com, I present to you, the IcoSoKu: Just thousands, that’s it? In my list of mathematical strengths probability does not appear, but there are: 12 unique numbers (vertices of an icosahedron), so 12! = 479,001,600 ways to arrange … Continue reading

Looking up at the ceiling of Westminster Abbey in Henry VII’s Lady Chapel. No questions, just thought it was cool.

Neat: (from Make: Online) If you’ve ever struggled to locate the center of a circular plate or a piece of round stock using a ruler or a square, you know it can be a tricky proposition. But this cleverly-designed gauge … Continue reading