Yeah! It’s a Dad Joke!

Whoa! Totally CRAZY! Skiing a HELIX.

It looks like a Fibonacci Spiral, but that is an illusion. Steps on a spiral staircase are always the same length!

NO! This is not your homework. No stunts.

Just show us where you see maths in the world.

Prime Numbers vs The Hackers!

Note: The last challenge involves guess work. Maybe, an intelligent guess, but, maybe, not.

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More Math Jokes for Mathy Folks **here.**

**PLAIN TEXT Dad Joke Maths Survey Worksheet pdf UK & Australia**

**PLAIN TEXT Dad Joke Math Survey Worksheet pdf USA**

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**Maths Photo Scavenger Hunt Worksheet PDF**

**More interesting Maths Selfies here.**

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**NB: This post has been updated twice. Disraeli said that if you want to become acquainted with a subject, write about it!!!! Mathspig’s head nearly exploded writing about this subject. But I’ve got it down to its simplest form now. One that Mathspig finally understands.**

**Prime Numbers Hide Your Secrets: SLATE**

Remember the best online calculator is the **WEB 2.0 Calc.** NOTE: This is a secure website and you can check on its KEYCHAIN too.

You will find a fantastic list of Prime Numbers **here**.

**Crack a Security Code WORKSHEET & ANS**

Mathspig thanks Prof Kate Smith-Miles, Prof of Applied Maths, Monash University for the information about Keychains. Kate has used KEYCHAIN exercises with primary school students. They really enjoyed going home and showing their parents how to find a Keychain on the computer.

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Some information you need.

Iron (Chemical symbol:Fe) content in food is recorded in mg because there are only small amounts of iron in food.

1 g = 1000 mg

eg. 1 paper clip = 0.5 g = 500 mg

Iron in 2 teaspoon peanut butter = 0.19 mg

**Full Page Worksheet PDF:Daily Iron Intake Calculation Work Sheet**

**More info here**

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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.

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

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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.

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

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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**

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Students worry about getting the answer wrong in front of the class because they believe that maths answers are always either RIGHT or WRONG.

The maths we need in the REAL world often involves open ended questions. Think of finding directions on Google Maps. What is the best way to get from A to B? One route might be shorter but include tollways another might involve longer distances but less traffic.

Text book problems are often repetitive with RIGHT answers at the back of the book. But in the real world maths problems nearly always involve THINKING. eg. A building design might require specific engineering maths. Now add costing! That’s an open question. There are many options. Maybe the costing will then change the engineering. Build 20 stories instead of 25.

Thinking Outside the box in Education: Info and Toolbox: **here**

Prof **Peter Liljedahl,** Faculty of Edu, Simon Fraser Uni, Canada, advocates open ended questions in the maths classroom.

Here are some of his examples for Year 7 -9 (Download pdf file at the link):

You have won tickets to a concert in Toronto but must plan your trip using flight times to arrive at the concert by 9pm.

You are in a bike race and have to use a street bike and trail bike, but one bike must be left somewhere on the route. You travel at different speeds depending on which bike you use. What route do you take? (A basic map is included.)

Maths is often about playing around with answers. This is how play led a class of 12 year olds to produce a peer reviewed research paper published in a science journal.

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