Nonetheless, exploring the byways of practical mathematics through the pages of the Treviso Arithmetic is both illuminating and great fun. It provides a fascinating glimpse of arithmetic as it was taught and used centuries ago. Copyright 1996 by Ivars Peterson. Swetz, Frank J. 1987. The New Math of the 15th Century.
Comments are welcome.
He is the author of The Mathematical Tourist, Islands of Truth, Newton's Clock, and Fatal Defect.