Archive for April, 2016

In this Newsletter:

1. New 3D interactive graph
2. Over 70 interactives
3. Roller door problem and Polymath software
4. Math in the news
5. Math puzzles
6. Math movie: Math symbols in ancient rock art?
7. Final thought: Mathematical habits of mind

Ancient rock art may give clues to the origin of written symbols, including early math notation.

I recently added a 3D interactive graph which you can use to explore the x-, y- and z-axis system.

Here's a numerical solution to an earlier problem we discussed involving a roller door.