## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Archive for December, 2018

### Math Wizz used Probability to Beat Lotto

December31

Romanian economist Stefan Mandel was struggling to make ends meet. So he came up with an unlikely solution — winning the lottery. But while most people who dream of scooping the jackpot rely on dumb luck, Mandel had other ideas. Mandel spent his spare time poring over probability papers penned by mathematician Leonardo Fibonacci — […]

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December28

It was one of those nasty family surprises – a family member having an emergency visit to hospital. As the nurse was making the patient comfortable, she was also busy checking the vital stats and noting them down in her log. Her comment was, “It’s all about numbers and I can’t do my job without […]

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### The Math of Christmas

December24

In the Bible there are some 300 prophecies concerning the arrival and life of Jesus Christ, the Messiah. Here are 8 of those 300 prophecies and the mathematical probability that they happened: (1) The Messiah will be born in Bethlehem. (Micah 5:2; Matthew 2:1; Luke 2:4-6) (2) The Messiah will be a descendant of Jacob. […]

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### Find x

December17

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### My Math – the Stats

December16

I am finally retiring – or at least trying to. Here are my stats: 46 years teaching 10 different schools Teaching in 3 different countries 2 Head of Faculty positions 2 attempts to retire 1 school leadership position 1 textbook and 1 novel 1 wife and 3 children So, you might ask, what happens to […]

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### Some Math Quotes…

December11

For teachers and students of Mathematics, a collection of Math Quotes can inspire and encourage deeper learning. They can also be fun. Here are a couple-click on them for

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### Math Trauma in Teachers and Parents

December10

“Maths trauma in teachers and parents contributes to the difficulty in learning and teaching mathematics. It is estimated that one third of primary school teachers suffer from “Math Trauma”. It is NOT their fault. When I was in primary school in the sixties, I was in the first cohort to use the textbooks adapted from […]

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### Math Factoid…

December6

There are more people alive today than have ever died

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#### Post Support

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]