Friday, March 18, 2011

Kindergarten Numberlines- What's Wrong with this Picture?

The simple reason why ColorMyMath number line is better than others is we focus on formatting for the child to understand counting and not formatting for the publisher to print.

Bad number lines start with 1 basketball and finish with 20 sticks.


One big basketball and lots of little sticks?! What's wrong with these pictures?

If we start out counting basketballs, then we finish counting basketballs. This takes up too much space and formatting becomes a problem.




Many number lines on the market have the flaw of changing the objects that are being counted, putting smaller objects in for the larger numbers so the objects fit on the page.

The objects/dots in the ColorMyMath  number line simply stay the same size.

Counting is more logical by simplicity than the previous example. By adding the same "measure" a dot, the child can now see the relationship between counting to larger numbers and making bigger groups.

The ColorMyMath number line also reinforces the previous learning goal for the child: recognizing bigger and smaller. The number line beautifully displays small, big, bigger, bigger still, biggest!

Monday, March 14, 2011

Daniel Tammet Likes Pi

Today is 3rd month and 14th day of the year. When math people write this date every year, too often they think of the first three digits of Pi, 3.14.


 
Daniel Tammet  is an interesting resource for today's teacher. He fits in with Pi Day because one day he recited 22,514 digits of Pi!  Daniel raised money for Epilepsy.  Besides math, Daniel also can learn languages in a matter of weeks as well!

When Daniel was young, he suffered from epilepsy. In Daniel's memoir, Born on a Blue Day,  he recounts how after nearly dying from a seizure he began to "see" colors when thinking about numbers. This is known as synesthesia and the famous physicist, Nikola Tesla is also known to "see" colors in thoughts.


Daniel's own drawing of a part of Pi.
The Boy with the Incredible Brain, start here, is 50 minute show about Daniel. Daniel shows scientists how he sees numbers by making them out of clay. These scientists are amazed when they show Daniel a corrupted version of the digits of Pi, he gets physically upset just watching. I was amazed to watch students in Japan use an imaginary abacus. Also, Daniel meets Kim Peek, the "real" Rain Man, and plays blackjack in Las Vegas.


In the book, Born on a Blue Day , Daniel describes his struggles with Aspergers syndrome and he writes about going on David Letterman and having to concentrate on making eye contact and smiling. Daniel tells David he looks like the number 117!  here.

Happy Three Point One Four Day!

Tuesday, March 8, 2011

Marie Curie

Marie Curie 1867 - 1934

As teacher and a father of a daughter, Marie Curie has always been an exceptional female role model in the field of science and math. Born in 1867 as Magna Sklodowska,  Marie was of Polish nationality and her parents taught her to read Polish at a time when it was illegal! 

Her mother died early and the house was turned into a boarding house and school by her father to make ends meet. Magna found respite in her studies. Her sisters and brother would try to distract Magna to no avail.

Around 1890, Magna changed her name from the Polish to the French pronunciation. This is the time when Marie began studying Physics at the Sorbonne in Paris, France. After graduating with top marks in Physics she began her second degree in Mathematics.

During the time at the Sorbonne, Marie met, married and work side-by-side with Pierre Curie. There is a wonderful 1943 movie, Madame Curie , based on a biography written by one of her daughter’s, Eve. The movie depicts the hardship of their lab conditions, and the work that goes into separating pitchblende into its elements. At the time pitchblende was a source of Uranium, however Marie and Pierre discovered two other radioactive elements hidden in it : Radium and Polonium, named after her native Poland.

In 1903, Marie was the first woman awarded a Nobel Prize when she and Pierre were awarded a Nobel prize in Physics for their discoveries in the new science of radioactivity

Alpha particle ejected from the nucleus of atom.

Three years later, Pierre tragically was run over by a horse and carriage crossing the street on a rainy day in Paris. Marie Curie became the first female Professor at the Sorbonne when she took Pierre’s position. Marie had a difficult time going back into the the lab because she and Pierre worked so closely for so many years.

Marie was awarded a second Nobel prize in 1911 in Chemistry. Now Marie was the first person to win two Nobel prizes in different fields.

When World War I broke out, Marie put science to work to save many lives. X-rays are excellent at showing pieces of metal like bullet shrapnel, in a body. If the surgeon does not find all of the metal, greatly increases the chance the patient will not recover. At the time, x-ray equipment was only in the bigger hospitals in the cities. 

Marie knew that the x-rays machines were needed at the front-line hospitals. Marie figured out how to put the x-ray equipment in a truck. The truck traveled between army hospitals supplying x-ray images and giving its life saving information. The trucks that drove the x-ray equipment were known as “Petite Curies” or “Little Curies. 

Marie in a "Little Curie truck"

The courageous Marie and one of her daughter’s drove to the front-line and trained others on how to run the x-ray machine. We found an enjoyable children's movie depicting this part of Marie's life called Marie Curie- More Than Meets The Eye at the library years ago and loved it.

Marie received the French Legion of Honor because she was beloved by France even before the war.

Marie and Pierre honored on French money.

Marie’s daughter, Irene also was awarded a Nobel prize in Chemistry in 1935. This was a year after Marie’s death at 66.

Madame Curie is now accessible to kids in graphic novels about her amazing life. This book my daughter enjoyed Marie Curie (History Maker Bios).

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Monday, March 7, 2011

Geradus Mercator Map Maker

Gerard Mercator was born, March 5th 1512, in the hospice of St Johann in Rupelmonde. Gerard’s older brother Gisbert was a priest at the hospice. Gerard was the 7th of 11 children. The father was a poor cobbler, and the family survived mainly on bread for the first 5 years of Gerard’s life.

At school Gerard studied Latin, religion and arithmetic. By the time he was seven years old he was able to speak and to read Latin fluently. Although others in his family became priests, Gerard could not accept the teachings of Aristotle. He was not going to publicly disagree with Aristotle because it would be heresy against the Catholic Church. Gerard could not believe the Catholic Church’s creation story either. What he could believe in was the land that god had made, he traveled extensively and fell in love with geography. Gerard found his calling mapping God’s creation.

Mercator is Latin for “merchant”. Gerard did not take the name Mercator until after his mother’s death around 1528. Maps at the time were very political because they showed which countries owned what, which cities were bigger than others.

Mercator returned to the school in Louvain in 1534 where he now studied mathematics. He had difficulty until he found the math that dealt with cosmography. He also learned to be an engraver and instrument maker and taught at the school for his income.

In 1538, Mercator produced his first world map. This was the first map to show the Americas stretching from the north to the south and the first time that North America was called North America.

In 1569, he first used straight longitudinal and latitudinal lines in a “Mercator projection”. Mercator also coined the word “Atlas” for the 18 wall maps of the world he produced.

On December 2 1594, after a third stroke, Gerard Mercator passed away. One of his sons completed the maps in progress.