Fibonacci year 1220- Learning decimal Indian numbers in Algeria or Tunisia? Meeting Roman Emperor Frederick in Pisa, ...

Meeting Roman Emperor 1235 AD

Learning from Arab Teacher 

Two clocks with different dials of number systems.

Imaginary - A Tower clock in Italian building getting changed to decimal

Pulling down Roman numerals - Fibo proudly displaying 

Fibo displays a calendar with decimal Inian system - Imaginary

The Best - On a big White wall Fibo writes X . (Roman number for 10) 

Then writes 10 the Indian number .

Then scores off the X (Good bye to Roman numeral)