Using An Abacus
| Field | Math |
| Went Obsolete | An approximation of when the skill was made obsolete |
| Made Obsolete By | The skill or item that made this skill obsolete |
| Knowledge Assumed | The knowledge needed to perform the skill |
| When useful | When this skill could still be used in the real world |
Then enter a description of the skill, and include a photo using the 'attach' link in the header for this page.
- not obsolete in my opinion, usage of the abacus at a young age seems to promote an understanding of abstract numbers-- and is still taught regularly in japanese public schools.
- By no means obsolete. Still in wide use throughout East Asia.