? Alan Porter (@rockhopper)

Raleigh, NC, USA

The below is an off-site archive of all tweets posted by @rockhopper ever

November 25th, 2011

@base10 Mandarin Pinyin pronunciation in a nutshell - http://t.co/ZoAik7gA

via Twitter for iPhone in reply to base10

Showing the girls how to find the center of the pumpkin pie circle using just a right angle (newspaper page). #geekdad

via Twitter for iPhone