I was excited to see that this section had five videos, and two sets of exercises. For an anxious student who is looking for help, that is a bit confusing. But I am very careful to avoid confusing people with the humour. ![]() But then under the heading, Basic probability, it says, “Can I pick a red frog out of a bag that only contains marbles?” Now I have no trouble with humour per se, and some people find my videos pretty funny. ![]() The first section of this first section is called Basic Probability, so I felt I was in the right place. I was a bit confused that the first section in the Probability and Statistics Section is called “Independent and dependent events”. It shows that it has a good sized budget to use on graphics and site mechanics. Here is the verdict.įirst of all the site is very nice. I put myself in the place of a person who was struggling to understand probability at school. I decided to focus on one section, introduction to probability. However, I thought it was about time I looked at the exercises that are available on KA, wondering if I should recommend them to high school teachers for their students to use for review. You can read the review here.Ĭonsequently I am aware that blogging about the Khan Academy in anything other than glowing terms is an invitation for vitriol from your followers. I’ve also reviewed a selection of videos about confidence intervals, one of which was from Khan Academy. I know that statistics is difficult to explain – in fact one of the hardest subjects to teach. Just over a year ago I wrote a balanced review of some of the Khan Academy videos about statistics. I can’t even imagine what the history teachers say about your content-driven delivery, but I will stick to what I know. (And these tests are clearly testing the type of material you are helping them to pass!) The bloggers are not so happy, because you perpetuate a type of mathematical instruction that should have disappeared by now. ![]() The parents love you because you help their children pass tests. This opinion is borne out by comments I have read from parents and other bloggers. I fear that the reason that so many people like your mathematics videos so much is not because the videos are good, but because their experience in the classroom is so bad, and the curriculum is poorly thought out and encourages mechanistic thinking. Like many others, I believe that something as popular as Khan Academy will benefit from constructive criticism. Some of your materials are not very good, though, so I am writing this open letter in the hope that it might make some difference. You have created an amazing resource that thousands of people all over the world get a lot of help from. Khan academy probability videos and exercises aren’t good either
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