▲ 1265 ▼ Panik (i.postimg.cc) submitted 2 years ago by ickplant@lemmy.world to c/lemmyshitpost@lemmy.world 146 comments fedilink hide all child comments
[–] Zacryon@feddit.de 5 points 2 years ago (1 child) One of the reasons why I love the number 3. There are other neat digit sum tricks, see for example for the numbers 1 to 30 here: https://en.m.wikipedia.org/wiki/Divisibility_rule permalink fedilink source parent hideshow 2 child comments replies: [–] Dagwood222@lemm.ee 7 points 2 years ago (2 children) They didn't teach stuff like this in school, which is silly. This is the kind of thing that a kid would eat up. It's like they wanted to make sure people hated math. permalink fedilink source parent hideshow 4 child comments replies: [–] steeznson@lemmy.world 4 points 2 years ago My experience of maths in high school was being taught a trick or method to solve a really specific type of problem every week. Sometimes the method would build off something we'd learnt the previous week. The whole thing was bottom-up learning where you get given piecemeal nuggets of information but never see the big picture. They completely lost me at around the age of 15. I eventually came back to maths later in life after studying formal logic in my philosophy undergrad degree. permalink fedilink source parent [–] Zacryon@feddit.de 2 points 2 years ago (1 child) I guess I was one of the lucky few who learned this in elementary school. And later again. permalink fedilink source parent hideshow 2 child comments replies: [–] Dagwood222@lemm.ee 1 point 2 years ago (1 child) I first saw the nine times finger trick in the movie 'Stand And Deliver.' I remember seeing it written out on a blackboard at some point, but never the finger trick. https://youtu.be/-WOgLltWhgg permalink fedilink source parent hideshow 2 child comments replies: [–] PipedLinkBot@feddit.rocks [B] 1 point 2 years ago Here is an alternative Piped link(s): https://piped.video/-WOgLltWhgg Piped is a privacy-respecting open-source alternative frontend to YouTube. I'm open-source; check me out at GitHub. permalink fedilink source parent
[–] Dagwood222@lemm.ee 7 points 2 years ago (2 children) They didn't teach stuff like this in school, which is silly. This is the kind of thing that a kid would eat up. It's like they wanted to make sure people hated math. permalink fedilink source parent hideshow 4 child comments replies: [–] steeznson@lemmy.world 4 points 2 years ago My experience of maths in high school was being taught a trick or method to solve a really specific type of problem every week. Sometimes the method would build off something we'd learnt the previous week. The whole thing was bottom-up learning where you get given piecemeal nuggets of information but never see the big picture. They completely lost me at around the age of 15. I eventually came back to maths later in life after studying formal logic in my philosophy undergrad degree. permalink fedilink source parent [–] Zacryon@feddit.de 2 points 2 years ago (1 child) I guess I was one of the lucky few who learned this in elementary school. And later again. permalink fedilink source parent hideshow 2 child comments replies: [–] Dagwood222@lemm.ee 1 point 2 years ago (1 child) I first saw the nine times finger trick in the movie 'Stand And Deliver.' I remember seeing it written out on a blackboard at some point, but never the finger trick. https://youtu.be/-WOgLltWhgg permalink fedilink source parent hideshow 2 child comments replies: [–] PipedLinkBot@feddit.rocks [B] 1 point 2 years ago Here is an alternative Piped link(s): https://piped.video/-WOgLltWhgg Piped is a privacy-respecting open-source alternative frontend to YouTube. I'm open-source; check me out at GitHub. permalink fedilink source parent
[–] steeznson@lemmy.world 4 points 2 years ago My experience of maths in high school was being taught a trick or method to solve a really specific type of problem every week. Sometimes the method would build off something we'd learnt the previous week. The whole thing was bottom-up learning where you get given piecemeal nuggets of information but never see the big picture. They completely lost me at around the age of 15. I eventually came back to maths later in life after studying formal logic in my philosophy undergrad degree. permalink fedilink source parent
[–] Zacryon@feddit.de 2 points 2 years ago (1 child) I guess I was one of the lucky few who learned this in elementary school. And later again. permalink fedilink source parent hideshow 2 child comments replies: [–] Dagwood222@lemm.ee 1 point 2 years ago (1 child) I first saw the nine times finger trick in the movie 'Stand And Deliver.' I remember seeing it written out on a blackboard at some point, but never the finger trick. https://youtu.be/-WOgLltWhgg permalink fedilink source parent hideshow 2 child comments replies: [–] PipedLinkBot@feddit.rocks [B] 1 point 2 years ago Here is an alternative Piped link(s): https://piped.video/-WOgLltWhgg Piped is a privacy-respecting open-source alternative frontend to YouTube. I'm open-source; check me out at GitHub. permalink fedilink source parent
[–] Dagwood222@lemm.ee 1 point 2 years ago (1 child) I first saw the nine times finger trick in the movie 'Stand And Deliver.' I remember seeing it written out on a blackboard at some point, but never the finger trick. https://youtu.be/-WOgLltWhgg permalink fedilink source parent hideshow 2 child comments replies: [–] PipedLinkBot@feddit.rocks [B] 1 point 2 years ago Here is an alternative Piped link(s): https://piped.video/-WOgLltWhgg Piped is a privacy-respecting open-source alternative frontend to YouTube. I'm open-source; check me out at GitHub. permalink fedilink source parent
[–] PipedLinkBot@feddit.rocks [B] 1 point 2 years ago Here is an alternative Piped link(s): https://piped.video/-WOgLltWhgg Piped is a privacy-respecting open-source alternative frontend to YouTube. I'm open-source; check me out at GitHub. permalink fedilink source parent
