multiplication tables. A new way.

I have found a new way to teach the multiplication tables, very fast and that does not require almost memory. It is explained in this article of the magazine epsilon 101 https://thales.cica.es/epsilon/?q=node/4783
Although it is in Spanish, you only need to follow the diagrams  to figure out how it works.


There are also some explanatory videos, which come to be the same:

-  Video explanatory: how to use

- Video explanatory construction 1

- Video explanatory construction 2. Step by step.