Posts Tagged ‘decimals’


OMG! Credit Card Antenna Geometry is so cool + some PIN Probability

January 24, 2023

The world  has mostly agreed on the size of a credit card:

Credit cards today contain a microchip and aerial.

A credit card is dissolved in ACETONE (solvent found in some nail polish removers) to extract the chip & aerial in this BBC video.


OMG! The cardless chip still works to pay for coffee. But if you wanted cash you would still need the PIN.


Halloween Math : Witches vs Zombies 1

October 16, 2022

There has been a real world Witches Vs Zombie Fight.

The witches of the Haunted House in Salem, Massachusetts, are at war with the Zombies of The Nightmare Factory nearby. A witch tripped a Zombie who was wearing a straight jacket!!!! And … read it for yourself in the Daily Mail, UK.

Links: Top Grossing Horror Movies

Blair Witch Project Budget here.


22 Amazing Numbers for 2022

January 6, 2022

Answers Q 1 – 5 Here

Answers  Q 6 – 10 Here

Answers Q 11 – 16 Here

Answers Q 17 – 22 Here


22 Amazing Numbers for 2022  … Answers Q 1 – 5

January 6, 2022

Ref: New York Post

REf: Hoop Addict

Ref:Interview on I Catch Killers with Gary Jubelin podcast.

Ref: Healthline


22 Amazing Numbers for 2022 … Answers Q 6 – 10

January 6, 2022

Ref: Indoor Skydiving

REf: Naomi Osaka

REf: Forbes Mag

REf: Shoe Obsession


22 Amazing Numbers for 2022  … Answers Q 11 – 16

January 6, 2022

Ref: (

Ref: Dermatology Clinic


Ref: Call of Duty


22 Amazing Numbers for 2022  … Answers Q 17 – 22

January 6, 2022

Ref: The Guardian, Aus

Ref: New York Times

Ref: (

Ref: Guinness book of Records

Ref: 22 facts about No. 22


MATH JOKE 9: Seriously Funny

January 18, 2019


4. If you are involved in a car chase, hijacking, explosion, volcanic eruption or alien invasion, you will not go into shock.

January 10, 2019

Here are just a few of the popular disaster movies:
Avalanche (2001), Earthquake (1974), Armageddon (Involves meteors 1998), Deep Impact (More meteors 1998), 2012 (Tsunamis, earthquakes, the lot. 2009), Twister (tornadoes 1996), Backdraft (Fire. 1991) and Towering Inferno (They don’t make thunderous movie titles like that anymore. (1974)  

But what percentage of people involved in, say, an explosion suffer from SHOCK! There are many statistics about Post Traumatic Stress Disorder (PTSD) available. In one excellent study in The National Centre for PTSD Journal involved an explosion in a paint factory in Norway (1976), the 246 employees were ranked for their exposure to shock as follows:.

A. 66 Narrow escape

B. 59 Involved but not in danger

C. 121 Not present on the day.

 80% Group A suffered shock and PTSD. Both Groups A & B showed symptoms of PTSD 7 months later. If, say, a plane crashed into your school sports field and your class survived with minor injuries calculate  how many students in your maths class would go into SHOCK and how many would be left to take action using the above statistics.

These stats can also be used as a fraction or decimal exercise using 0.8 or 4/5 as the fraction of students in shock.

More information at the Health Dept WA

NOTE: Many schools in Australia today not only practise fire drills but terrorist attack lockdowns.


m+m maths 3: how many m+ms will kill you?

June 25, 2015

Maths topics 10

mathspig death by choc

mathspig m&m maths 3a

mathspig 12 yr old

mathspig m&m maths 3b

mathspig m&m maths 3c

mathspig 14 yo

mathspig m&m maths 3d

mathspig m&m maths 3e

You can find more Death by Chocolate Maths here and here.