Header image of a close-up of a soroban

Forum

Share your comments, criticisms, ideas in the following forums

4 topics

6 comments

Virtual soroban

About the virtual soroban and its tutorials

36 topics

105 comments

Anzan

About the anzan software, "mental calculation"

8 topics

17 comments

Generator

About the generator

40 topics

41 comments

Website

About the website, news, suggestions