My son's extra credit presentation for Honors Algebra 2 - Pi Appreciation Day 3.14.12

1. Pi-tastic

2. Yumm….

3. Did You Know?
Albert Einstein (one
of the greatest
physicists of all time)
was born on pi day.
Bet you didn’t know
that.

4. Pi is super long
If you were to print 1 billion digits of pi it would
stretch from New York City to Kansas. That’s a
long piece of paper.

5. We use pi more than you think
Pi occurs in hundreds of equations in many
sciences including those describing the DNA
double helix, a rainbow, ripples spreading from
where a raindrop fell into
water, superstrings, general relativity, normal
distribution, distribution of primes, geometry
problems, waves, navigation and much more.

6. You think memorizing 100 digits is hard?
Hiroyuki Goto of Tokyo, Japan holds the world
record for most memorized digits of pie with
42,195

7. “What do you get if you divide the
circumference of a jack-o'-lantern by its
diameter?
Pumpkin
π

8. Most accurate pi calculation to date
It's hard to imagine a trillion of anything (it's a million
million), but Shigeru Kondo calculated 5 trillion digits of pi
in August of 2011... and then blew that away with 10
trillion digits!

9. Pi hasn’t been around forever
Pi has been studied for 4000 years; however,
the actually pi symbol has only been in use for
250 years.

11. Euler’s relation to pi
Our “Favorite Friend” Euler was one of the
first mathematicians to use the symbol for pi
in 1737.

12. Common misconception of circles
Most people would say that a circle has no
corners, but it is more accurate to say that it
has an infinite number of corners.

13. Babylonian mathematicians
The first signs of pi were in Babylon in 2000
b.c. They used the fraction 25/8 or 3.125 as
pi, we’ve come a long way since then.

14. Numbers in Pie
The first million decimal places of pi consist of
99,959 zeros, 99,758 1s, 100,026 2s, 100,229
3s, 100,230 4s, 100,359 5s, 99,548 6s, 99,800
7s, 99,985 8s, and 100,106 9s.

15. Wasted life??
Ludolph van Ceulen (1540-1610) spent most of his life
calculating the first 36 digits of pi (which were named
the Ludolphine Number). With today’s modern
technology it would take someone about 2 minutes to
calculate 36 digits of pi.

16. Fun Fact
Pi was first rigorously
calculated by one of the
greatest mathematicians of
the ancient world,
Archimedes of Syracuse
(287-212 B.C.). Archimedes
was so engrossed in his work
that he did not notice that
Roman soldiers had taken
the Greek city of Syracuse.
When a Roman soldier
approached him, he yelled in
Greek “Do not touch my
circles!” The Roman soldier
simply cut off his head and
went on his business.

17. Circumference is never exact
We can never truly measure the
circumference or the area of a circle because
we can never truly know the value of pi. Pi is
an irrational number, meaning its digits go on
forever in a seemingly random sequence