Archive for the ‘surds’ Category

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FREAKY FRIDAY: Surd and Absurd Math Word Maze USA edition

October 25, 2021

PDF file: Crazy math maze work sheet 1 USA

PDF file: Crazy math maze work sheet 2 USA

CRAZY MATH MAZE WORKSHEET ANSWER

PDF File: Crazy math maze work sheet ANS USA

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Real World Maths: Surds and all that jazz …

November 23, 2020

Eddie 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. 

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FRANTIC FRIDAY: Crazy Math Word Maze USA edition

February 24, 2020

PDF file: Crazy math maze work sheet 1 USA

PDF file: Crazy math maze work sheet 2 USA

CRAZY MATH MAZE WORKSHEET ANSWER

PDF File: Crazy math maze work sheet ANS USA

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FRANTIC FRIDAY: Crazy Math Word Maze USA edition

June 3, 2019

PDF file: Crazy math maze work sheet 1 USA

PDF file: Crazy math maze work sheet 2 USA

CRAZY MATH MAZE WORKSHEET ANSWER

PDF File: Crazy math maze work sheet ANS USA

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FRANTIC FRIDAY: Crazy Maths Word Maze UK edition

June 2, 2019

PDF file: 1. Crazy math maze work sheet 1 UK

PDF file: 2. Crazy math maze work sheet 2 UK

CRAZY MATHS MAZE WORKSHEET ANSWER

PDF file: 3. Crazy math maze work sheet ANS UK

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Gadzooks! It’s a surd joke

March 15, 2019

And don’t for get the FAKE tan.

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Square Root. It’s a Tree!

May 20, 2018

Just found this on Twitter! Had to share it.

NEXT:
If an IMAGINARY NUMBER screams alone in a forest can you imagine that you can hear it? Ha!

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4. Keyword Rap

August 3, 2011

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This is the Hey! Ho! Moment.

You write down the keyword lyrics first and riff. You don’t have to be good. 

But you must never smile. It is a rule. Rappers don’t smile. They are some of the most miserable millionaires on earth.See Eminem and 50 Cent below.

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Here is an example playing with Square Roots.

eg.

Whatcha gotta know ..

Whatcha gotta know 

surds .. absurd .. surds …

√2 you do.

√3 happy

√4 Want more?

√5 Ha! Ha! Ha! Staying alive. ( A little Bee Gee Riff there.)

Chorus: Hey! Ho!

Whatcha gotta know ..

Whatcha gotta know 

surds .. absurd .. surds …

√6 clickety clicks.

√7 Go to heaven.

√8 Don’t be late.

√9 Divine.

Chorus: Hey! Ho!

The trick is to get the kids to stand together and swing their hands up in the air and across chanting HEY! HO! for the chorus.

If you want to see rapping it is done Google: True Live. Keep Myself Awake

Some kid may take pity on you and do the Keyword Rap with beat box sound effects for you.

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22. Maths Karaoke

August 3, 2011

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Get a karaoke CD. Ask kids to do karaoke in class. The trick is to rewrite the words to one song relevant to your subject.

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Here are the Diskjokeys.com 200 Hits of All Time.

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IMAGIN(ARY) NUMBERS

Based on Imagine by John Lennon

Imagin-ery numbers

There’re easy if you try

No real number

You have to call it i

Imagin-ery problems

Math’s so weird today…

Imagine there’s no maths class

It isn’t hard to do

Nothing to solve or work out

And no home work too

Imagine all the teachers

Staring at the sky …

Chorus:

You may say I’m a dreamer

One day I hope you see

This Oh! so weird world with i

Sure beats reality.

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It’s a Wonderful Surd   √

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Based on It’s a Wonderful World by Louis Armstrong

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I see √7, √3 too

I see √5, also √2

And I think to myself, what a wonderful surd.

I see sweet √4, which is only 2

The craziest square roots, you can not undo

And I think to myself, what a wonderful surd

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