This is very cool.

https://www.facebook.com/didyouknowpage1......8487238/

Mike

This gets quite a bit of coverage over at the Mind Your Decision blog: https://mindyourdecisions.com/blog/tag/multiply-by-lines/

...and here are a few advanced tricks with the concept: https://www.youtube.com/user/MindYourDec......by+lines

Amazing. It's fitting that a people that use pictures instead of letters to communicate can use pictures to multiply.

BJ

It's nice that the stick additions mirror our standard method of multiplying on paper, but it is hardly faster and you don't understand place values when you use the sticks. Also, the examples side step the problem of having a carry by using small digits. Still, it is good that there is a visual counterpart to the pencil and paper method.