|
|
|
|
|
|
by Rendello
455 days ago
|
|
|
Have you used it much? I'd like one, but I can imagine it sitting on my desk for years unused. I have "Secrets of Mental Math" by Arthur Benjamin and have wanted to practice some of those mental math skills, and I wonder if learning the soroban will interfere with my existing mental calculation framework (which is admittedly weak at the moment). |
|
|