## Archive for the ‘%’ Category

April 5, 2019
Posted in %, Middle School, units weight, Year 7 mathspig **|** Tagged % sugar in chocolate, chocolate, Easter, Easter Eggs, Fun, Guylian Chocolate, How much sugar, Math, Maths, Middle School Math, project **|** Leave a Comment »

February 18, 2019

The follicle diagram (above) came from bgoffforensics blog. More on hair growth rates here.

**QUESTION 1:**

## How long to grow that really bad 70s style hair cut?

The length of Fabio’s hair (below) is approx 50cm.

t = 50/1.25 months

t=40 months

## t = 3 Years 4 months!!!!

## Is it worth the effort? Ha!

**QUESTION 2: **

The growth rates of 1.25 cm/month or 0.5 inches/month are rounded off. Calculations using these growth rates will produce different answers for very large numbers (as above). Read more about the above story in the Daily Mail, UK here. By the way, Asha has been growing her hair for 25 years. Her hair weighs 3 stone or 19 kg. You can find more hair records including the World’s longest ear hair here.

**QUESTION 3:**

Natasha lives in Rio de Janeiro, Brazil. Read more about Natasha in the Daily Mail here. Once again Mathspig has rounded off the length of hair for easy calculation. The Daily Mail puts Natasha’s ‘mane’ at 5 feet 2 inches or 157 cm. This is the length of hair to be cut off. So Mathspig adjusted the length to 180cm or the approx length of her longest hair.

Posted in %, 10 MATH JOKES, decimals, units length, Year 7 mathspig, Year 9 Mathspig **|** Tagged %, 1970s, 1980s, calculation, dreads, funny, growth, hair, haircuts, length, Maths, old, rate, ugly, world record, worst **|** Leave a Comment »

January 18, 2019
Posted in %, 10 MATH JOKES, Arithmetic, Junior School, Middle School **|** Tagged arithmetic, back to school, canteen, decimals, Dumb, Fun, funny, HOmework, I hate, joke, lunch, Math, Maths, Middle school, Stupid **|** Leave a Comment »

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.

Posted in %, 10 Movie Cliches Debunked with Maths, Fractions, Hollywood Maths, Junior School, Middle School, Year 7 mathspig, Year 9 Mathspig **|** Tagged %, alien invasion, Armageddon, calculate, decimals, disaster, exercise, fractions, Math, Middle school, movie, real life, shock, symptoms, Twister **|** Leave a Comment »

May 27, 2018
Posted in %, 10 Mentalist Maths Tricks, Junior School, Mentalist Maths, Middle School, Year 7 mathspig, Year 9 Mathspig **|** Tagged %, 10 Math Mentalist tricks, calculate, classroom, crazy, end of year, entertainment, Fun, Math, mentalist, Middle school, psychic, spooky, stunt, trick **|** Leave a Comment »

March 5, 2018
# ………………………………………..

# And the Oscar for Best Mathematical Performance Goes to …..

# Ben Zauzmer

**Ben Zauzmer, a Harvard Applied Math graduate who has a 75 per cent success rate in predicting the winners of Oscar Awards every year, has correctly predicted 20 of 21 winners in 2018 Oscars, which is a success rate of 95%. **

**How does he do it? He gathers thousands of data points on Oscar ceremonies over the past two decades – such as categories movies are nominated in, other award results, and aggregate critic scores – and he uses statistics to calculate how good a predictor each of those metrics is in each Oscar category. Then, he plugs in the numbers and that gives him the % chance that each film will win in each category according to the Boston Globe.**

**Ben, who writes for The Hollywood Reporter, uses his mathematical model to produce Bar Graphs like this:**

**This year the Best Picture was a close call, but Ben’s Mathematical Prediciton was correct. **

Posted in %, algorithms, Hollywood Maths, Middle School, Senior School, Year 7 mathspig, Year 9 Mathspig **|** Tagged Academy Award, accuracy, algorithm, Ben Zauzmer, Best Picture, data, Math, methematics, model, Oscar, percentage, predictions, statistics, Winner **|** Leave a Comment »

September 20, 2017

**The Complaint**:

**You’re either Good at Maths or You’re Not!**………………

### ………………………………………………………………………….

**The Cause**:

#### Most students who said “I can’t do maths’ when I was teaching, didn’t do maths. They talked, penned a tattoo on their arm. Or scribbled in the text book. Today they read texts or play games on their phones under table or fall asleep.

### ………………………………………………………………………….

**The Solution:**

#### There is no point arguing. Students must ‘see’ they can do maths.

#### Do something that grabs their attention, something counterintuitive. Here is one of the BEST revision projects ever for middle school maths students. Remember, the best way to learn something is to teach it.

………………………………………………………………………………….

**Project MATHS SLAM WORKSHEET plain txt PDF**

**Project MATHS SLAM WORKSHEET plain txt USA PDF**

### ………………………………………………………………………….

**Project Maths Slam**

**Project Maths Slam USA TERMS**

Posted in %, 10 REasons Why Students Hate Maths: BUSTED, Decimals, Middle School, middle school, Units Volume, Year 7 mathspig, Year 9 Mathspig **|** Tagged back to school, best, boring, Busted, class, Fun, good or bad, hate, help, home work, Math, Middle school, motivation, project, Revision **|** 2 Comments »