## Archive for the ‘algebra’ Category

August 16, 2017

# The Complaint

## 8b: When will I EVER use this maths?

# The Cause:

#### Students doing repetitive text book exercises without using maths to solve REAL WORLD problems.

**The Solution:**

## You are going to use this maths NOW…………………..

## ……………………………………………………………………………….

## How much blood can YOU lose and survive?

## ………….METRIC UNITS

Remember the best calculator to use is the **WEB 2.0 Calculator** as it shows the worked equation as you go.

**CAREERS:** It’s not only health workers who need to understand these calculations, but also creatives running health campaigns online, on TV, radio and in magazines.

# TOPICS: Decimals, %, algebra, vol, weight units (METRIC)

PDF WORKSHEET HERE:**How**** much blood can you lose and still survive? WORKSHEET METRIC**

Posted in 10 REasons Why Students Hate Maths: BUSTED, algebra, Decimals, middle school, Units Volume, Year 7 mathspig, Year 9 Mathspig **|** Tagged blood, calculate, challenge, cool, die, equation, formula, hate, loss, Math, student, survive, volume, When will I use this math? **|** 1 Comment »

August 16, 2017

# The Complaint

## 8b: When will I EVER use this maths?

# The Cause:

#### Students doing repetitive text book exercises without using maths to solve REAL WORLD problems.

**The Solution:**

## You are going to use this maths NOW…………………..

## ……………………………………………………………………………….

## How much blood can YOU lose and survive?

## ………….USA Units

Remember the best calculator to use is the **WEB 2.0 Calculator** as it shows the worked equation as you go.

**CAREERS:** It’s not only health workers who need to understand these calculations, but also creatives running health campaigns online, on TV, radio and in magazines.

# TOPICS: Decimals, %, algebra, vol, weight units (USA UNITS)

PDF WORKSHEET HERE:How much blood can you lose and still survive? WORKSHEET USA UNITS

Posted in 10 REasons Why Students Hate Maths: BUSTED, algebra, Decimals, middle school, Units Volume, Year 7 mathspig, Year 9 Mathspig **|** Tagged blood, calculate, challenge, cool, die, equation, formula, hate, loss, Math, student, survive, volume, When will I use this math? **|** 1 Comment »

August 14, 2017

# The Complaint

## 8c: I Will Never Use this Maths

**The Solution:**

## You are going to use this maths NOW……………..

……………………………………………………………………..

# How much alcohol will kill you?

## TOPICS: Decimals, %, algebra, vol, weight units (Metric)

At low levels of consumption alcohol impairs decision making and inhibits coordination. It makes you DUMB and CLUMSY, which can cause serious injuries if you, say, fall down stairs.

Legal Age to Buy or Sell Alcohol USA: 21 years

Legal Age to Buy or sell Alcohol AUST, NZ & UK: 18 Years

Legal Age to Buy or sell Alcohol CANADA: 18 – 19 Years depending on region.

At higher levels of consumption ALCOHOL can kill. It is a depressant. It acts on your central nervous system. It can STOP YOU BREATHING.

WORKSHEET PDF: ** How Much Alcohol Would Kill You? WORKSHEET**

**WORKED EXAMPLE**

**1. Calculate the weight of (pure) alcohol or ethanol in the following standard drinks using the following information:**

Now Ethanol = **0.79** gm/ml

More information @ **alcohol.org.nz**

Posted in 10 REasons Why Students Hate Maths: BUSTED, algebra, Middle School, units length, Year 7 mathspig, Year 9 Mathspig, Young Drunk Dead **|** Tagged alcohol, algebra, answer, calculation, challenge, drink, kill, lethal, Math, percentage, perfect, shots, simple, teenage, when will I use **|** 1 Comment »

July 17, 2017
## METRIC UNITS below. USA UNITS here.

# BEAR STATISTICS

# Grizzly Bear

**Weight: 250kg**

**Height: 250cm**

**Top Speed: 56kph = 16 m/sec**

**More bear stats here. **

# Brown Bear

**Weight: 680kg**

**Height: 250cm**

**Top Speed: 35kph = 10m/s**

**More bear stats here.**

**Comparing these speeds to the fastest man on earth, Usain Bolt:**

# Usain Bolt:

**Top speed: 243kph = 12m/s**

**So Usain Bolt could out run a Brown Bear but NOT a Grizzly!**

# Bears are NOT as dangerous as:

**In fact more Americans die choking on their own vomit each year than a re killed by bears.**

**More death stats here.**

**But bears are very fast so Park Rangers recommend the following survival tactics:**

**More bear survival info here.**

**REF: Dog helps save hikers after grizzly chases them for 20 minutes here.**

Posted in algebra, Decimals, Fractions, Linear Equation, Middle School, Simultaneous Equations, The Terrifying Maths of Running from a Bear, units length, units speed, Year 7 mathspig, Year 9 Mathspig **|** Tagged amazing, bear, Brown, campers, danger, death, Grizzly, kill, Math, project, safety, scary, speed, stats, warning **|** 1 Comment »

July 17, 2017
## USA UNITS below. METRIC UNITS here.

# BEAR STATISTICS

**Weight: 550 lb **

**Height: 8’ 2” **

**Top Speed: 35 mph = 51 ft/s **

**Weight: 1,500 lb **

**Height: 8’ 2” **

**Top Speed: 22 mph = 32 ft/s**** **

**Comparing these speeds to the fastest man on earth, Usain Bolt:**

**Usain Bolt:**

**Top speed: 27 mph = 40 ft/s **

# Bears are not dangerous:

………………………………………………………………………

**In fact, more Americans die each year from choking on their own vomit than are killed by bears.**

**More death stats here. **

**Nevertheless, bears are very fast. So you can see why Park Rangers offer the following advice:**

More information at Mountain Nature.

**The reason for waiting until the bear is 15 ft away is to make sure the spray doesn’t disperse in the air. If the Pepper Spray is too spread out it will not stop the bear.**

Ref: Dog helps save hikers after grizzly chases them for 20 minutes.

Posted in algebra, Decimals, Middle School, Simultaneous Equations, The Terrifying Maths of Running from a Bear, units length, units speed, Year 7 mathspig, Year 9 Mathspig **|** Tagged amazing, attack, bear, BMX bike, Brown, challenge, death, escape, Grizzly, Math %, Middle school, rules, safety, statistics, survival **|** 3 Comments »

June 26, 2017

# ………………..How much money does a popular

# ………………………YOUTUBE clip make?

You will learn everything you need to know at **1 Million YouTube Views. ** Now let’s do the maths!

Here are the TOP 3 **YouTube Clips Ever**. Their popularity is measured by Number of Views.

# 1. PSY – GANGNAM STYLE

# 2,879,287,942 views

View **here**.

# 2. Taylor Swift – Blank Space

# 2,088,564,435 views

View** here**.

# 3. Wiz Khalifa – See You Again. Charlie Puth (Furious 7)

# 2,850,776,581 views

View **here**.

YouTube uses an algorithm (ie. a formula) for calculating the amount of income earnt by a clip from advertising. There are multiple issues involved including how long viewers watch the ad, the demographics (age group) and the actual sales (Retailers actually do review ad costs vs increased sales. Always. They are not idiots.)

Here is the basic method used to calculate ad revenue for a Youtube creator. Remember, a creator must have a minimum of 10,000 hits on their channel before any revenue is paid.

Of course, pop stars use Youtube as a promotion platform. They can earn money through multiple Youtube clips, sponsors, merchandise and live perfomances. Nevertheless, it is surprising how little money is earned by each clip.

eg. ONE DIRECTION

# 521,126,151 views

View **here**.

Posted in %, algebra, Base 10, Middle School, YouTube Clip Money Making Maths **|** Tagged ad, algorithm, calculations, clip, earn, ever, how much, income, Math, most, payment, popular, top, youtube **|** Leave a Comment »

February 23, 2017
Mathspig spends some time on trains looking at nearby phone HOTSPOT names, so she went out looking for some fun mathsy WIFI names.

Surely,

### IT = nerd behaviour = mathsy fun

## SHOCK! HORROR! OUTRAGE!

Mathspig searched for days online. She only found 1, ONE, UNO, SINGULARITY, THE LONELIEST No., one vaguely mathsy WIFI funny (below).

Instead of showing WIFI maths funnies, Mathspig came up with a great MIDDLE SCHOOL MATHS WIFI CHALLENGE.

## MIDDLE SCHOOL MATHS

## WIFI CHALLENGE

# SUMMARY

1. Find a test/worksheet for your class.

eg. Mathcentre NZ have some fabulous **Middle School Worksheets** with **answers**. (eg. BELOW)

2. Change your phone name and HOTSPOT password.

3. Test Answer is your WIFI HOTSPOT password!

If you do not know how to rename your phone or change the password, GOOGLE it.

It is easy.

4. When students have worked out their answers and accessed your HOTSPOT using the password, tell them to go this funny link **Use the Wifi Force, Luke! **

Here is a worksheet example:

Worksheet ANSWERS:

# QUICK SUMMARY

LINK: **Use the WIFI Force, Luke!**

Posted in algebra, Middle School, Wifi Challenge, Year 7 mathspig, Year 9 Mathspig **|** Tagged algebra, challenge, classroom, Fun, joke, Math, Middle school, motivation, name, password, project, wifi, worksheet, year 9 **|** Leave a Comment »