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!

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!

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?

Jackie from Straight Ace Learning ( Maths & Movies ) asked Mathspig to come up with a formula for Wolverines super fast super healing powers. He can regenerate or heal in 5 seconds. In the latest Wolverine Movie he becomes mortal ….

Wolverine Facts:

No. Cells in a human/X-man Body

= 75 trillion cells = 75 x 10^{12}

(Mid-point of 60-90 trillion cells cited on the fab AskaBiologist website)

Imagine Wolverine is slashed/shot/wounded in the abdomen.

Ask a student to write down two 5-digit numbers. You rapidly write a 5-digit number underneath.

Ask another student to write another 5-digit number. You write another 5-digit number quickly.

Stand back.

And instantly write the answer.

Example:

N_{1 }= 97413

N_{2} = 28619

N_{3} = 71380 (Each digit in N_{3} must add up to 9 with digits above)

N_{4} = 64231

N_{5} = 35768 (Each digit in N_{5} must add up to 9 with digits above)

Now you will instantly write down the sum of these five numbers as

297411

Da! DA!

The trick is to subtract 2 from N_{1 }and put it in front:

N_{1 }= 97413

N_{1 }-2 = 97411

Sum of 5 numbers = 297411

Hint: Get as many students to add up the five 5-digit numbers on a calculator. You will beat them, but you will also need many answers as a number of students will key incorrect numbers.