美国MITBBS

回复里有人提到，总共 12级，只有最开始的两级有实体算盘，三级以上都是意念算盘了。

masalion •7h ago • Edited 2h ago

Parents sent me to do this, gave up after a bit but the ones that go through all 12 levels are insane.
They stop using the physical device after level 2. Level 3 - 12 is completely mental.

EDIT: Mental = mentally visualizing the thing + triggering muscle memory with hands.

太牛了

珠心算嘛

who 写了： 27 7月 2024, 13:36

小朋友这个手巴拉巴拉的样子太可爱了

牛逼！