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And then there is Singapore math https://www.nytimes.com/2010/10/01/education/01math.html https://www.nytimes.com/2010/10/01/education/01math.html

• ravenstine 5y ago
  Strangely enough, I'm an American who was taught Singapore math in elementary school. Then my family moved to a nearby city where they taught standard American math and I wasn't allowed to solve math problems the Singapore way. Even though I got the correct answers, the teachers insisted I do math the "right" way, which I consistently messed up for the rest of my life. Singapore math not only has a more reasonable pace to learning, but as someone with inattentive ADHD I found its approach to arithmetic easier for me to keep track of in my head. Even if people have heard of Singapore math, they might not know that things like addition are done left-to-right rather than right-to-left. https://youtu.be/HS7BDq73pRE?t=44 https://youtu.be/HS7BDq73pRE?t=44 I don't know about anyone else, but that is more like how I do math in my head on a day to day basis since the first step gets you closer to the answer. Just doing more addition underneath is also more visually clean than carrying numbers by writing them above the original equation. Paper is plentiful, and now I'm sure it could all be done digitally, so there's no reason to use standard American math to save space.