The wonderful folk in the Willamette University Mathematics Department asked me to do a full colloquium session, October 1, and it was about ... Exploding Dots! Check here to see the full story, from how we write numbers to grade school arithmetic to high-school math to open research, all in one fast-paced hour. Loads of fun!

Join Orlando Science School folk on April 10th for a fun morning of exploring math. Each lesson will take about 30 minutes, so there will be two lessons an hour. It will start promptly at 9 AM EDT (6 am PDT) and end at 12 noon EDT (9 am PDT). This is designed mainly for 4th-6th graders, but others may enjoy it as well. And it is free!