tag:blogger.com,1999:blog-4242439961617529545.post5929388219924978641..comments2024-03-27T21:10:45.791+00:00Comments on Resourceaholic: The Rule of ThreeJo Morganhttp://www.blogger.com/profile/11919801458664779971noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-4242439961617529545.post-29867512335278327132020-02-21T15:01:56.562+00:002020-02-21T15:01:56.562+00:00It all makes sense now! - I was teaching some perc...It all makes sense now! - I was teaching some percentage topics with a class including Spanish and Mexican students, and guess what they were doing - very proficiently, but they didn't have the understanding as to why. This always makes me somewhat nervous, but I was happy that they continued using their method as long as they were secure in knowing how to layout their calculation (some Anonymoushttps://www.blogger.com/profile/06183407042700697733noreply@blogger.comtag:blogger.com,1999:blog-4242439961617529545.post-7266493502471842992020-02-19T16:57:59.943+00:002020-02-19T16:57:59.943+00:00The method I describe for this in my post about ra...The method I describe for this in my post about ratio is essentially the Rule of Three. I don't say 'cross-multiply' but it's the same thing: https://www.resourceaholic.com/2017/12/ratio.htmlJo Morganhttps://www.blogger.com/profile/11919801458664779971noreply@blogger.comtag:blogger.com,1999:blog-4242439961617529545.post-37078244279149216432020-02-19T16:56:19.351+00:002020-02-19T16:56:19.351+00:00Thanks Atul, that's really interesting. Sounds...Thanks Atul, that's really interesting. Sounds like you're doing awesome stuff with your tutees.Jo Morganhttps://www.blogger.com/profile/11919801458664779971noreply@blogger.comtag:blogger.com,1999:blog-4242439961617529545.post-11550020308918897352020-02-18T10:27:02.360+00:002020-02-18T10:27:02.360+00:00I just got hold of your book and have started goin...I just got hold of your book and have started going through it, also read the intro which I think is important. I went to school in Kenya, Libya, India and eventually on to my 8th school at my local comp in London finishing off Year 11, 12 and 13. I learnt a few methods adapting to whatever new method was presented to me through those years. My London school only had one A level set run by the Atul Ranahttps://www.blogger.com/profile/11259088181007986688noreply@blogger.comtag:blogger.com,1999:blog-4242439961617529545.post-73414241323412156262020-02-18T09:54:32.372+00:002020-02-18T09:54:32.372+00:00I was recently, last week in fact, teaching my yr1...I was recently, last week in fact, teaching my yr10 class. We are following the crossover scheme from JustMaths. In Unit 15 - Ratio, I came across a the objective “write a ratio as a linear function”. I suspect that others in my faculty have ignored this objective and wished I had spotted this before anyone should have taught it, (I will be looking into the the first week back). The cross Bladehttps://www.blogger.com/profile/05149316187887866509noreply@blogger.comtag:blogger.com,1999:blog-4242439961617529545.post-31857961458234782982020-02-15T12:26:03.701+00:002020-02-15T12:26:03.701+00:00I use the Cross multiplication method but I explai...I use the Cross multiplication method but I explain why it works first whilst doing equivalent fractions in year 7. I also teach the reasoning approach as sometimes that is the easier option. I use this multiplicative reasoning in lots of topics at GCSE. m.smith@saddleworthhttps://www.blogger.com/profile/16802172471886132921noreply@blogger.com