## Posts Tagged ‘real world’

## Halloween Math: Witches vs Zombies 2

October 16, 2022## Halloween Math : Witches vs Zombies 1

October 16, 2022There 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.**

## Real World Maths: Surds and all that jazz …

October 12, 2022Eddie Woo is an Aussie Maths teacher who runs his own Youtube Channel. So popular is this channel in October 2015, **Woo** won the NSW Premier’s **Prize** for Innovation in Science and Mathematics. This youtube clip won’t tell you where you will use surds, but it does something magical.

It compares surds to different kinds of music to help students understand why mathematicians go crazy over the concept of surds. This clip tells why maths is soooooo special. There is no guesswork or fake information in this maths. Maths must be accurate. And surds demonstrate this point. (Look for the 5 min mark)

## Will you use surds in real life?

Maybe. Probably, not. But surds are used in mathematical programs that demand accuracy. eg. engineering skyscrapers, building satellite dishes, and even in video games. But you won’t see them. Like so much mathematics surds will be hidden in some algorithm.

Here are two Examples:

# 1. The Golden Ratio:

Often written a 1:1.61 the Golden Ratio or Fibonacci Sequence appears in art and nature and has an aesthetic appeal to the eye, but the accurate ratio is:

# 2. The Quadratic Function

Satellite dishes, headlights, torches, and bridges all designed using the parabolic arc. The parabola is defined by the quadratic function and sometimes solving for x produces an irrational no. namely a surd. Rounding off can introduce inaccuracies that can become more dramatic when scaled up to the sie of, say, a bridge.

# 3. The Golden Ratio in Music

Mozart arranged his piano sonatas so that the number of bars in the *development and recapitulation* divided by the number of bars in the *exposition* would equal approximately **1.618**, the Golden Ratio. Find more @** CLASSIC FM.**

In the above diagram, C is the sonata’s first movement as a whole, B is the *development and recapitulation,* and A is the *exposition*.

And here is Mozart’s Piano Sonata No. 1 in C Major as an example. Can you hear the Golden Ratio. Not really. But it’s there.

## DART vs ASTEROID: Middle School Math

September 27, 2022**DART is a test **

**of NASA’s planetary defence plans.**

# AND IF YOU GOOGLE ……..

# DOUBLE ASTEROID REDIRECTION TEST

# Guess what?

**The DART(Double Asteroid Redirection Test)** mission was launched on Nov. 23, 2021, atop a SpaceX Falcon 9 rocket from the Vandenberg Space Force Base in California.

### It is the size of a small vending machine and it has been travelling through space for 10 months.

## MIDDLE SCHOOL MATH: Mapping, Matrices and GAME DEVELOPMENT

August 7, 2022The aim of this post is to show middle school math students that MATRICES are used in the REAL WORLD of GAME DEVELOPMENT.

They don’t have to do the math.

To have some fun playing with a 2D to 2D transformations go to this **MathIsFun **post.

## No Frills MATHs SKILLS for Parents 2 : Algebra

May 4, 2022## Death by Caffeine: The Math Part 2 USA units

November 18, 2021## Death by Caffeine: The Math Part 2 Metric Units HERE.

Caffeine content sources **Caffeine Content Data Base**

On April 12 2017 16-year-old Davis Cripe collapsed at school in South Carolina and died later in hospital. In the span of two hours, Davis drank a cafe latte from McDonald’s and a large Mountain Dew, then “chugged” a 16-ounce energy drink when he got back to art class.

Here, assuming Davis drank large sized drinks, is the lethal caffeine consumption.

NOTE: Davis lived in the USA where standard drink volumes are slightly different to Australia & UK. The USA volumes are used here converted to litre and ml.

The official cause of death was “caffeine-induced cardiac event causing a probable arrhythmia,” the coroner concluded. Source: Washington Post

# Caffeine can kill.

WARNING: “Mixing caffeine with alcohol is a dangerous practice because it may lead to higher levels of alcohol consumption as the person often believes and feels they are more alert,” said Dr Robert Glatter, ER doctor at Lenox Hill Hospital, NYC . “The risk of alcohol poisoning increases as people consume more alcohol because they feel the caffeine will keep them awake and alert.” Source: USA Today

## Death by Caffeine: The Maths Part 2 METRIC

November 18, 2021## Death by Caffeine: The Math Part 2 USA UNITS HERE.

Caffeine content sources **Caffeine Content Data Base**

On April 12 2017 16-year-old Davis Cripe collapsed at school in South Carolina and died later in hospital. In the span of two hours, Davis drank a cafe latte from McDonald’s and a large Mountain Dew, then “chugged” a 16-ounce energy drink when he got back to art class.

Here, assuming Davis drank large sized drinks, is the lethal caffeine consumption.

NOTE: Davis lived in the USA where standard drink volumes are slightly different to Australia & UK. The USA volumes are used here converted to litre and ml.

The official cause of death was “caffeine-induced cardiac event causing a probable arrhythmia,” the coroner concluded. Source: Washington Post

# Caffeine can kill.

WARNING: “Mixing caffeine with alcohol is a dangerous practice because it may lead to higher levels of alcohol consumption as the person often believes and feels they are more alert,” said Dr Robert Glatter, ER doctor at Lenox Hill Hospital, NYC . “The risk of alcohol poisoning increases as people consume more alcohol because they feel the caffeine will keep them awake and alert.” Source: USA Today

## Maths in the Real World: 10 Attention Grabbers for Middle School

September 5, 2021## 1. Smoke Jumpers: The Amazing Maths of wildfires

## 2. The Rolling Coin Paradox!!

## ROLLING COIN PARADOX HERE

## 3. How barcodes work!

## Barcode MATHS HERE

## 4. Pop Song Beats and Jogging

## 5. Linear Math and Linear Drumming. It’s a thing!

## 6. Powers and the Loudest Rock Band in the World

## Powers and the Loudest Rock Band MATHS HERE

## 7. Alcohol Kills! Calculate how much would kill you!

## Alcohol Kills! MATHS HERE

## 8. Tall Tales: Is height the most important factor in sport?

## Height in Sport maths: METRIC UNITS HERE

## 9. Mmmmm! Chocolate. Yes! It can kill you

## 10. Random Music? You think!