Posted in revision

When you've got a maths exam coming up, you need to study for it. Trouble is, you don't know how. Here are a few tips and tricks that can help you improve - as Katrina says: I got my results back. My previous exam, i did really badly, but by

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Posted in revision

I never really learned how to revise for a maths exam at school. I'm sure people tried to teach me, but I generally wound up reading passively through my notes, maybe copying them out, and possibly writing big question marks on them in highlighter. It worked ok for me, at

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Posted in in praise of..., ranting, sport

or, why we need to show exams the red card Oh, Jesus wept. A study shows that in even years - when there's meaningful international football in the summer - boys' exam performances drop. The authors suggest starting the exams earlier so as not to disadvantage football-watchers. Let's leave aside

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Posted in decision maths, psephology

I don't think that the benefit to one party or another is a valid reason to pick a voting system - but one of the features of AV is that it tends to select the least objectionable candidate. Here's a simplified example. Let's imagine we have four candidates contesting a

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Posted in statistics

There's an excellent article by talking about a really interesting probability 'paradox' to do with summer births. It's not really a paradox (as with a lot of probability, it makes perfect sense once you think it through), but the "at least one boy" puzzle was one of my favourites growing

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Posted in logarithms

(Photo courtesy of UN Development Program.) We've had a lot of noticeable earthquakes around the world in the last year or so - Haiti, Chile, New Zealand. Probably no more than usual, except that we notice them more - but that's a topic for another day. Instead, we're going to

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Posted in ranting

Here, let me get on this soapbox a moment Things that irritate me beyond end, number two in a series of, well, lots: grumbles about how "oh, it's pointless teaching maths, you only ever use it to work out discounts in the supermarket and there are calculators on your phone

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Posted in algebra, geek pride, prime numbers

If you follow the great big geeks on twitter - and , I'm looking at you - you'll have seen bits and pieces of discussion about prime birthdays. How to find your next prime birthday It's your prime birthday if you've been alive for a number of days that happens

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Posted in algebra

Two things: the somewhat random-looking picture above is from The Moon Is Blue, a 1953 film that's the first known reference to the 'dating rule' discussed here. Secondly, I don't make any judgement about the validity of the 'dating rule' - you might find it a useful rule of thumb

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Posted in fractions

Good God, will you get your fractions sorted out? You're meant to have been on top of them since primary school, but you've been studiously avoiding them for the last half-decade, haven't you? If you'd put half as much effort into learning four simple rules as you have into convincing

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