Posts Tagged ‘simple’

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Mean, Median and Coffee: Busting an Urban Myth

April 21, 2017

 

A Fun Maths Exercise.

Students count steps.

No units of length used. 

You can find the free pdf worksheet  (included below) here.

Other fun middle school math(s) worksheets in the Hot Heels series at TpT include

Unit Rates, Angles, Ratios and Algebra.


There is a lot of maths and science behind coffee sloshing in a coffee mug. ‘The human stride has almost exactly the right frequency to drive the natural oscillations of coffee’ explains fluid physicists at the University of California at Santa Barbara. You will find their full explanation here.

 

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Tennis: Andy Murray is serving. How long have you got to return his serve?

January 19, 2017

 No. 1 UK tennis star Andy Murray is currently playing in the Melbourne Open. 

Mathspig often pops along to watch the tennis. 

andy-murray-serve-carine-06

Andy Murray’s Serve by Carineo6

Could you return Andy Murray’s serve? 

According to Wikipedia Andy Murray’s fastest serve speed is:

Andy Murray = 233 km/h (145 mph)

Keep in mind the fastest female tennis serve by Barbora Záhlavová-Strýcová is a very respectable 225 km/h (140 mph).

5a Mathspig Andy Murray

Go here to see why this simplified calculation works! 

Mathspig tested her reaction time here. TRY IT!

Mathspig’s best, best, best reaction time = O.33 sec

Could Mathspig return Andy Murray’s serve?

Nooooo!…………………………………………………………………….

I’d be hit in the head by a speeding tennis ball

before I even moved.

But I’m a pig. I got the best service GRUNT! Ha!

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1. Tube Cube

February 17, 2016

10 Amazing ways to see a cube

The Tube Cube is made from straws and hat elastic (Steps 1 – 9 below). The effect is quite amazing. The TUBE CUBE can then be used to make a CUBIC BUBBLE here.

Don’t show your Middle School students these instructions. Just give them access to some straws, hat elastic, rulers and scissors and ask them to make and then photograph their cube. That’s the challenge Mathspiggies. But the end result (See  Step 9) is awesome.

Mathspig Cube 1.1

Mathspig Cube 1.2

Mathspig Cube 1.3

Mathspig Cube 1.4

Mathspig Cube 1.5

Mathspig Cube 1.6

Mathspig Cube 1.7

Mathspig Cube 1.8

Step 8: The TUBE CUBE can be flatened into a hexagon.

Mathspig Cube 1.9

Step 9: The TUBE CUBE can be turned into an art work. This pic was taken in daylight.  The cube was positioned at an angle on a black sheet of paper with one corner set in Blu Tack. WOW!

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1. Hokey Pokey Algorithm

November 25, 2015

1a Mathspig Hokey pokey
Here’s the Hokey Pokey:

You put your right foot in
You take your right foot out
You put your right foot in
And you shake it all about
You do the hokey pokey
And you turn yourself around
That’s what it’s all about!

1b. Hokey Pokey

Why are algorithms as easy as the Hokey Pokey?

Because the Hokey Pokey is an algorithm or a set of steps that have to be taken to complete a task (see below) and the task is having fun and/or being really embarrassed by your parents in public. Whatever!

2. Algorithm 1
3. Algorithm 2
For more information about algorithms go to the Khan Academy here.

READABILITY ALGORITHM
We are going to look at texts including a maths test to check their readability. Here are just a few songs with their age and Grade readability scores:
Hokey Pokey (above) = Grade 3 = 9 yo
Frosty the Snowman = Grade 5 = 11 yo
Hello by Adele = Grade 5 = 11 yo
Wildest Dream = Taylor Swift = Grade 3 = 9 yo
Russians* Sting = Grade 6 = 12 yo
* Most complicated lyrics I know. Any other suggestions?

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4. The Harry Potter Algorithm

November 25, 2015

Here is the Harry Potter Text:

Harry Potter and the Sorcerer’s Stone, J.K. Rowling

“Have you ever seen anything quite as pathetic?” said Malfoy. “And he’s supposed to be our teacher!”

Harry and Ron both made furious moves toward Malfoy, but Hermione got there first – SMACK!

She had slapped Malfoy across the face with all the strength she could muster. Malfoy staggered. Harry, Ron, Crabbe, and Goyle stood flabbergasted as Hermione raised her hand again.

“Don’t you dare call Hagrid pathetic you foul—you evil—”

“Hermione!” said Ron weakly and he tried to grab her hand as she swung it back.

“Get off Ron!”

Hermione pulled out her wand. Malfoy stepped backward. Crabbe and Goyle looked at him for instructions, thoroughly bewildered.

“C’mon,” Malfoy muttered, and in a moment, all three of them had disappeared into the passageway to the dungeons.

Hermione!” Ron said again, sounding both stunned and impressed.”

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Readability Harry Potter: Method 1

Break the above text into sentences. Count the words, sentences and syllables.

You will find the text breakdown and syllable count here. Syllables in Harry Potter Text

Word Count =

Sentence Count =

Syllable count =

The syllable count is tricky. You will find my sentence-by-sentence count here.

10 Harry Potter Readability Method 1

Readability Harry Potter: Method 2

You will still have to do a sentence count, but you can cut and past the text into the following:

Word Counter

and

Syllable Counter

Results:

Word count = 138

Syllable count = 194

Sentence count = 14

11 Harry Potter readability Method 2

Readability Harry Potter: Method 3

You can calculate the Flesch Kincaid Score by cutting and pasting text here or here:

12 Harry Potter Readability Method 3

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5. Maths Test Readability Algorithm

November 25, 2015

Here is the text from a Grade 3 Math Test:

See Fear and Loathing in Grade 3 Math

Math homework

Math formative.

I can use multiplication strategies to help me multiply.

I can use the structure of a word problem to help me solve it.

Solve the word problem below. Be sure to show your work. Julie bought 7 packages of cupcakes. Each package has 4 cupcakes in it. How many cupcakes did Julie buy?

Flesch Kincaid Score = 81.4

Grade Reading Level = Grade 5

Reading Age = 10 – 11 years

This is a bit tough for Grade 3 students. Perhaps more Maths tests should be tested for AGE READING LEVELS!!!!!