Category Archives: Numeracy

Why we teach

Let x = 0.222 ...

On Friday, after lessons, a pupil came to find me. I don’t teach him this year, but have done so previously and I know him to be particularly interested in the subject and we often chat about what he’s currently studying in maths. He sought me out for some help with a problem he had […]

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Palindromic Numbers

Today is a palindrome. Look at today’s date: 31 1 13 Its the same forward as it is backwards. There’s quite a nice little investigation you can do with numbers: Take any 3 digit number – say 567. Reverse the digits -> 765 and add them together.  Is the answer “interesting”? (In this case “interesting” […]

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Percentages of …

10% Sales Tag - find 10% of an amount

  To find a percentage of any amount, start by finding 10% Finding 10% is easy – just divide the amount by 10 So, to find 10% of 120, all you do is 120 ÷ 10 = 12 So, 10% of 120 = 12 If we need to find 30% of an amount, we still […]

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BODMAS

BODMAS

BODMAS – one of my favourite topics to teach. 2 + 3 x 4 Does it equal 20 or does it equal 14? We can’t have two answers to one question – that would cause all sorts of confusion! So, back in the day, mathematicians got together and agreed to BODMAS – the order in […]

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Numbers!

The Number 5

Visualising Numbers We all see numbers differently, but I recently stumbled upon a great website for visualising numbers: http://www.datapointed.net/visualizations/math/factorization/animated-diagrams/ All non-prime numbers are made up of prime numbers – this is often called prime factorisation, in maths lessons we ask pupils to … “… write [some number] as the product of its prime numbers in […]

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