## Sharp Shooter Maths …. METRIC

May 10, 2019

Mathspig grew up on a police station in the small Australian country town of Kyneton, Victoria in the 1960s. Australia has a very strict gun laws today. But such laws didn’t exist in the sixties. My Dad’s .22 rifle rested against our fridge. He pocketed the magazine.

A .22 means a bullet calibre of .22 inches.

My Dad the Sharp Shooter stopped a stolen car with one bullet. This was considered legendary by his fellow cops. He didn’t shoot the tyres. He managed, by accident and possibly even though he was aiming at the tyres, to hit the electrical lead into the car’s  distributor cap. Phht! Car go no more. More on my childhood here.

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# Sharp Shooter Maths

One measure of the accuracy of rifles, riflescopes but also the sharpshooter is the MOA or Minute of Angle.  The MOA can also be used to define the target zone (circle).

I cannot show you a triangle with an angle of 1′ because it would have to be 100m long on one side and only 3cm tall.

Needless to say, drawings are NOT to scale.

A sharpshooter can put 5 out of 6 bullets in a target zone drawn at 1′ angle around centre of target at any distance.

As the distance away from the target increases the target zone circle area increases.

A sharp shooter would be considered very skilled if they can shoot within a target zone (circle) of 10.5 inch radius at 1000 yds. Hitting a bull’s eye at this distance is down to luck.

## Sharp Shooter Math …. USA units

May 8, 2019

Mathspig grew up on a police station in the small Australian country town of Kyneton, Victoria in the 1960s. Australia has a very strict gun laws today. But such laws didn’t exist in the sixties. My Dad’s .22 rifle rested against our fridge. He pocketed the magazine.

A .22 means a bullet calibre of .22 inches.

My Dad the Sharp Shooter stopped a stolen car with one bullet. This was considered legendary by his fellow cops. He didn’t shoot the tyres. He managed, by accident and possibly even though he was aiming at the tyres, to hit the electrical lead into the car’s  distributor cap. Phht! Car go no more. More on my childhood here.

cc

cc

# Sharp Shooter Maths

One measure of the accuracy of rifles, riflescopes but also the sharpshooter is the MOA or Minute of Angle.  TheMOA can also be used to define the target zone (circle).

I cannot show you a triangle with an angle of 1′ because it would have to be 100 yds long on one side and only 1 inch tall.

Needless to say, drawings are NOT to scale.

A sharpshooter can put 5 out of 6 bullets in a target zone drawn at 1′ angle around centre of target at any distance.

As the distance away from the target increases the target zone circle area increases.

A sharp shooter would be considered very skilled if they can shoot within a target zone (circle) of 10.5 inch radius at 1000 yds. Hitting a bull’s eye at this distance is down to luck.

January 12, 2018

# UK                  None EVER

More deaths occur due to falling off chairs in Australia. Quad bikes are deadly anywhere.

Full Stats and references here.

Meanwhile,  you see a shark fin. You can swim BUT what distance do you need to be from the shark to make it to the beach.

You will find some interesting maths here.

## Mathspig is Going to the ICME Hamburg 2016 …………………………Woo Hoo!

December 21, 2015

# Hello Little Munchins,

Much to the amazement of many, including my piggy-self, Mathspig is off to present a workshop at the International Congress on Mathematical Education, Hamburg, 2016. Mathspig was surpised and delighted, of course, because humour and maths are often considered polar opposites.

Here, in part, is the workshop I will present:

## Making middle-school maths real, relevant, deadly serious and π-in-your-face funny!

I always loved, loved, loved maths at school, at university and teaching maths for 10 years. In 2009 I became Mathspig, funster maths blogger and guru to show teachers at conferences that maths could be fun.

By then I had been working as a journalist, humourist and public speaker for 25 years. Coming back to maths after such a break, I was hit with a mathematical epiphany. Suddenly, I realised that all of the maths problems I had solved at school, at university and teaching involved answers that were meaningless to me. All I wanted was to get them right and move on.

So I set out to ask maths questions that have answers middle-school students, especially, will want to know.

How much do they stretch models’ legs using Photoshop? How do you calculate ramp distances for a stunt motorbike jump? How long does it take a 14 year old to bleed to death from an arrow wound? How many calories – for Twilight fans – are in a litre of blood? Why should Headbangers study geometry? Could you return Andy Murray’s serve? How old is your hair? Why was trigonometry needed to produce the CGI image of Merida’s curly hair in the movie, BRAVE?

And here,for those of you looking to make middle school maths real, relevant, deadly serious and π-in-your-face funny are just some of the relevant links:

Odd Bods in Marie Claire: How much do they stretch modles legs in magazines?

Stuntman Jump: The trigonometry of Motor Bike Ramps

Hunger Games: Surivival Maths 1: How long would it take a 14-year-old to bleed to death from an arrow wound?

How man calories in a litre of blood? And therefore, how many Shi Tzus would a health young Vampire need to get their blood fix each night?

Could you return Andy Murray’s serve?