March 14th is π Day.
The third month and the 14th day
relates to 3.14 which is π to three
significant figures.
Today's challenge is to memorise π to as many digits as you can before it fades completely.
3.141592653589793238462643383279
502884197169399375105820
974944592307816406286
208998628034825
3421170679
...
Though it is not necessary for students to memorise pi these days it is important that they are familiar with it and can use a rough approximation of it to estimate answers to questions. This exercise certainly helps students become familiar with pi but also uses pi as an arbitrary subject of this memory challenge.
Incidently, in the days when memorising pi was important people devised mnemonics such as “How I wish I could calculate pi” where the number of letters in each word represent the first seven digits of pi. Do you know any other mnemonics for remembering pi? Please let us know.
Topics: Starter  Circles  Memory  Multiple Intelligences  Rounding
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\(i\) is the imaginary unit, the square root of negative one.
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then adapted and published by Gottfried Leibniz around 1676.
The normal distribution is the most important continuous distribution in
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drop \(n\) needles of length \(L\) onto a plane ruled with parallel lines \(t\) units apart.
Count the number of needles, \(h\), that cross lines.
First posed by Mengoli in 1650 and solved by Euler in 1734 this is known as The Basel problem.
Even calculus has a use for pi as can be seen in this integration.
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Matt Parker's new book is all about our mistakes and misadventures with maths, geometry and all things numbers. Going from the mundane as to arguments about how many days in a week and the shape of footballs on signs, to famous errors and mistakes like the Space Shuttle disaster, London's walkie talkie building and the Millennium wobbly bridge. He explains how these problems occurred and in the case of some that they had occured in the past and we hadn't learnt from previous experience.
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You can find out more about this book here
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