In the video, Lieber says the math behind the trick is part of an idea called the ... where probabilities line up until people’s outcomes end up being the same. There are a lot of variations ...

However, you never know when you’ll need to do quick math, and the Japanese multiplication method (also called multiply-by-lines ... Here’s how the trick works. First, pick a multiplication ...

Math, though we promise you ... into a simple game of counting dots. The "trick", which is taught in Japanese schools, involves drawing parallel lines to represent the digits you are multiplying ...

This genius Japanese multiplication method of drawing lines ... said: "Maths should never feel mystical to the point of confusion. And while magicians may never reveal their tricks, we think ...

The math of handicraft was long dismissed as merely a cute trick or an inconsequential coincidence ... the shape of a riding saddle) where all lines curve away from each other.

This genius Japanese multiplication method of drawing lines ... said: "Maths should never feel mystical to the point of confusion. And while magicians may never reveal their tricks, we think ...

This genius Japanese multiplication method of drawing lines ... said: "Maths should never feel mystical to the point of confusion. And while magicians may never reveal their tricks, we think ...

This genius Japanese multiplication method of drawing lines ... said: "Maths should never feel mystical to the point of confusion. And while magicians may never reveal their tricks, we think ...