Jenni Gorham

Physics graduate, online maths tutor and maker of videos

[Jenni Gorham @thawom0]

If you've been struggling with remote learning/homeschooling during lockdowns, check out my video on how I was educated. #remotelearning #homeschool #lockdown #unschooling https://t.co/Vv5zXZE3g9

[Jenni Gorham @thawom0]

Video: a geometry construction problem I could actually do! https://t.co/i50pG2X0yX

[Jenni Gorham @thawom0]

New video: solution for 2019 Senior AMC Q30 (a function recursion question) https://t.co/34aflWVCc7

[Jenni Gorham @thawom0]

@TBoywonder https://t.co/Jphxw6FyvB It's pretty complicated why this happened. Basically, some early 20th century textbooks phrased an order of operations rule poorly, and some teachers took it as gospel, so now calculator manufacturers are under pressure to conform to the mistake.

[Jenni Gorham @thawom0]

How I do maths tutoring online (a guide for people switching from face-to-face tutoring because of COVID-19) https://t.co/xjR5rzDD7d

[Jenni Gorham @thawom0]

Video: long division maths puzzle https://t.co/NqT9QaSyNS

[Jenni Gorham @thawom0]

Solutions for Q16 of the 2019 NSW HSC Maths Ext2 exam https://t.co/BdYkweHidc

[Jenni Gorham @thawom0]

@WWMGT @preshtalwalkar 19-11=8, but upside down

[Jenni Gorham @thawom0]

New maths olympiad video: IMO 2018 Combinatorics 1 https://t.co/f9E6C1gfia

[Jenni Gorham @thawom0]

Merry Christmas! My recent bloopers and youtube's automatic caption failures: https://t.co/uluwaY02oz

[Jenni Gorham @thawom0]

The How and Why of Mathematics (https://t.co/fyDVsIRvhb) just reached 1000 subscribers! 🎉🥂 Nice to have some good news on this dark day with Sydney blanketed in smoke.

[Jenni Gorham @thawom0]

Video on the hardest questions from past Maths 30-1 Diploma Exams https://t.co/CPdYlm7Pta

[Jenni Gorham @thawom0]

Video on some hard geometry problems, and what I've been up to over the past couple months: https://t.co/OptP0MngXu

[Jenni Gorham @thawom0]

Another good problem for those who struggle with algebra word problems: https://t.co/KKhGjea0yC

[Jenni Gorham @thawom0]

@steph_anoodle Unfortunately it's not so simple, because PEMDAS is an oversimplification of the order of operations actually used in mathematics. See this video: https://t.co/Jphxw6FyvB

[Jenni Gorham @thawom0]

@stevenstrogatz @nytimes The follow-up article is spot on. I just made a youtube video about the history of this disagreement about order of operations and why some calculators say 16 while others say 1: https://t.co/Jphxw6nXE3

[Jenni Gorham @thawom0]

@Starla50106759 @jdmumma @JoeBarri @pjmdolI Interestingly, David Linkletter @DLink71381357 found that it was mostly just American teachers that thought the answer was 16, whereas others say 1. I made a new video which mentions this: https://t.co/msQjTxmekF

[Jenni Gorham @thawom0]

@AlexRoseGames @cryptoLINDA @chaser_kang @TwitterMoments What's interesting is that Texas Instruments calculators originally (back in the early nineties) would've given the answer 1. So do Sharp calculators. The reason TI now give the answer 16 is probably due to pressure from teachers, rather than thinking 16 is correct.

[Jenni Gorham @thawom0]

@scottleish @TwitterMoments This is the perfect answer. I just made a youtube video saying exactly this. And I found that most calculators available to me locally gave the answer 1.

[Jenni Gorham @thawom0]

@TwitterMoments Multiplication by juxtaposition has priority over division, so the answer is 1. See https://t.co/Jphxw6FyvB