## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Archive for October, 2014

### Skew…

October29

“Skew” means “slant” or “leaning”. For example, looking at this picture of the Leaning Tower of Pisa (taken by H3 recently): We can say that the tower is “askew” or skewed” – it has an obvious lean to the right (from where the picture was taken – from some angles it doesn’t appear to lean […]

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### Rock Star Stats – death by numbers!

October29

“When you gonna wake up?” might well resound in our musical ears. Bob Dylan’s haunting lyrics apply to some astonishing statistics that analyze the deaths of pop stars and then compares these stats. with the general population. Pop stars tour the world, party whenever they want and live truly lavish lifestyles but their habits often […]

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### What use is my high school math?

October28

This is a really good question and one that I was asked in class again today. A simple answer is, “Not much directly, but…” In a recent article on the same question, Angus McDougall, 25, a Sydney structural engineer, says he “wasn’t amazing” at maths during high school, but decided to study a bachelor of civil […]

### Can 1 = 3?

October26
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### Thanks a million….oops, 10,000!

October25

Thanks for supporting H3Maths. We have now reached 10,000 hits on the blog which we never thought would happen, ever! Many students have enjoyed the way that we connect Mathematics with the real world, simplify important classroom concepts, and focus on career opportunities that require (or don’t require) a basic mathematical interest. So, from the […]

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### Mathematics creates computer games

October24

Missy is 6 years old and loves building things. MineCraft is based on blocks that link to make new spaces and gives her that stimulating, creative outlet. She is also enjoying and doing well in her Math. Mathematics is widely used for modelling real life situations via simulation or strategy games. These types of games […]

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### One Apple 1 is very special

October23

At the calculating roots of our high school math courses was a rather crude looking computer called the Apple 1. Guess what? A model of the Apple-1 (above) recently sold for a stratospheric \$US905,000 by Bonhams auction house! This was a working model of the Apple-1 and among the 50 models that were assembled by […]

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### “Maths is keeping me afloat!”

October22

The intellectual rigour of the most complex high school mathematics does not worry these students at Sydney Girls High School. All but a handful of the selective school’s Senior girl students sat the State mathematics test on Wednesday, along with more than 50,000 of their peers. They laugh when asked if they ever considered not […]

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### Hey big spender…don’t spend on me!

October18

“A new study in the US has found that the more people spend on their weddings and engagement rings, the more likely they are to divorce. Economic professors at Emory University carried out a study on over 3000 US men and women who had been married to a member of the opposite sex. Professors Andrew […]

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### It’s the Commutative Law!

October15

Yes, we mathematicians also have to keep the law and the Commutative Law is a big one for us! A commuter is someone who travels to work each day and then home again.They might look something like this; Their travel route and distance is the same in both directions, so we call them a “Commuter”. […]

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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)?]