| May Birthdays: Two
famous mathematicians have birthdays this month:
Maria Gaetana Agnesi was born on May 16th. She lived in Italy, from
1718 to 1799.
In Italy, in the eighteenth century, most women could not read. It was
felt that women went astray by reading bad books.
With even a basic education so difficult to achieve, it makes her contributions
to mathematics even more amazing. We'll learn more about her in coming months
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May is a month of flowers. Go
outside, and stroll around a garden. Look closely at some flowers. Count the
petals. What do you observe?
Keep track of the numbers of petals on different flowers. You many notice
that many of them are among the following number sequence:
1,1,2,3,5,8,13,21,34,55,89...
This sequence of numbers is called the Fibonacci Sequence, named after the Italian
mathematician.
Can you tell how the sequence is formed? What are the next two numbers in
the sequence?
What do Fibonacci Numbers have to do with Flowers?
For reasons we don't exactly know, Fibonacci numbers appear in nature far more
often than other numbers.
This month, find some flowers, and count the petals. Count the spirals in
pine cones - in both directions. Do the same in pineapples, or sunflowers. See
what you discover.
And remember to stop and smell the roses.
Answer to top question: Fibonacci numbers are derived by adding the two previous
numbers in the sequence. Hence the next two will be 144 and 233. |
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Abraham De Moivre was born on May 26th, 1667. He
lived in England, and was a good friend of Sir Isaac Newton.
Trigonometry students use the theorem that
carries his name, a thoroughly elegant way to find roots and powers of complex numbers.
He died in 1754. |