Wednesday, March 14, 2012

Pi Day Celebration!

Fact:  Pi is commonly referred to as 3.14.
We’ve been celebrating Pi Day for several days now.     This year it happened to fall right on the week we are studying circles!   How perfect is that?  (E-R says it would be more perfect, if we happened to be working on page 314 in our grammar books!)
We’ve listened to Mathematical Pi quite a few times---love its catchy tune.
A long, long time ago. Long before the Super Bowl!
As well as this amazing video
What the number Pi sounds like when translated into music---pretty awesome!
Fact:  Albert Einstein was born on Pi Day in 1879.
We started out our week with reading Sir Cumference and the Dragon of Pi. 
Sir Cumfernce and the Dragon of Pi
It was silly and a bit young for I-E and E-R, but I enjoyed it!   And it did an excellent job creating a visual picture of how pi is used to determine the circumference of a circle. 
Fact:  In the Star Trek episode—Wolf in the Fold—Spook fools the evil computer by telling it to compute to the last digit of Pi.
Next we tried to figure out how to determine the area of a circle.We knew that an area of a rectangle is determined by multiplying length by width, so we cut out our circles and tried to put them together into a rectangle.
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Cutting the circle into fourths didn’t work.    

Pi Day 223Neither did cutting it into squares.


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Cutting it into very small pizza slices almost allowed us to form a rectangle.

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By taking the one of those pizza slices and cutting it in half, we finally were able to form our rectangle.   And we could then see that 1/2 of the circumference times the radius equals the area of a circle.   Since the circumference of a circle is determined by multiplying 1/2 the diameter by pi by the radius of the circle, the area of a circle can be determined by multiplying pi by radius squared.  
Fact: At position 763 there are six nines in a row.  This is known as Feynman Point.
The Joy of Pi
The Joy of Pi (which showcases the first million digits of pi) is an informative read.   Inspired by the chapter on memorizing pi, I-E and E-R wrote their own piems
And I said, “A black pineapple at living magic dot com/dragon/sentence composing someone dot gentlemen.
See I need a below classroom to remake songs for women.  
It was hard!   
Fact:  Chao Lu of China holds the world record for most memorized digits of Pi---67,890.
After reading several chapters on the history of pie, we created this timeline book

Pi Day 252Pi Day 253Pi Day 254Pi Day 255Pi Day 256Pi Day 257Pi Day 258Pi Day 259Pi Day 260Pi Day 261Pi Day 262Pi Day 263Pi Day 264Pi Day 265
Fact:  There is no occurrences of the sequence 123456 in the first million digits of Pi.
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Drew parallel lines. 
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Dropped our baguettes (toothpicks)
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Figured, figured, and figured some more.
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One of the two experiments we completed did work out to 3.17.   Perhaps Lord Buffon was on to something, or perhaps he just had too much time on his hands! 
A Pi Banner was created
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and proudly hung.
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Notice the decimal point!
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Representing Pi to the 207th digit, the girls plan to use the banner to memorize lots of Pi.
Fact:  In 2002, a Japanese scientist found 1.24 trillion digits of pi using a powerful computer called the Hitachi SR 8000, breaking all previous records
We also created Pi plates in anticipation of the pumpkin pie we plan to make for supper!
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Fact: The height of an elephant from foot to shoulder is equal to 2 times pi times the diameter of the elephant’s foot!
A friend made this awesome Pi tee-shirt to celebrate Pi day!
Pi day teeshirt
Be sure to link up your Pi celebrations to .Celebrate Pi Day

Favorite Resource This Week


  1. Very cool post and facts! So much I didn't know about Pi! :)

  2. What a great group of activities! We've also enjoyed the Sir Cumference stories in the past.
    Thanks for sharing with Favorite Resources!

  3. You just taught me all sorts of fun Pi Day facts!!! Thanks for sharing with Learning Laboratory at Mama Smiles :)


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