Archived Japanese children learn super-fast mathematics with abacus (hooktube.com)
submitted ago by Grindelwo
Posted by: Grindelwo
Posting time: 1.7 years ago on
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Archived on: 7/4/2019 10:00:00 AM
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Archived Japanese children learn super-fast mathematics with abacus (hooktube.com)
submitted ago by Grindelwo
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[–] thelma 0 points 1 point 1 point (+1|-0) ago
https://www.invidio.us/watch?v=xveJjbgiN-I
BAM..slide rules rock biitches
[–] RedditOMeter ago
They are ingenious! So many applications. https://www.youtube.com/watch?v=a3larHNC0Hg