Some time ago
when I revised my niece’s homework I explained her how to obtain the perimeters
and areas of some plane geometric figures. There was no problem in the
calculations of the square, rectangle and triangle areas. But the problem was
the calculation of the circle’s area because of the number pi. How to explain
pi to her? In those days, she hasn’t seen even the decimal numbers and notation
(those things about the decimal point and the cyphers on the right). It was
really difficult to make her understand those numbers and to explain her pi and
the perimeter and area formulas. However some scientific celebrations helped me
and I would like to tell you about them.

The wine: The Roman period.

Hace 5 años