Thursday, April 26, 2007
Foto is from a walk around campus with my new camera...
I did a search for “Quick Calculations” in prepping for a math workshop I am giving on Saturday and came across this book on Amazon… which I promptly bought, called:
Speed Mathematics: Secret Skills for Quick Calculation (Paperback)
by Bill Handley (Author) "How well do you know your basic multiplication tables?..."
“People who excel at mathematics use better strategies than the rest of us; they are not necessarily more intelligent.
Speed Mathematics teaches simple methods that will enable you to make lightning calculations in your head–including multiplication, division, addition, and subtraction, as well as working with fractions, squaring numbers, and extracting square and cube roots. Here’s just one example of this revolutionary approach to basic mathematics:
96 x 97 =
Subtract each number from 100.
96 x 97 =
Subtract diagonally. Either 96—3 or 97— 4.
The result is the first part of the answer.
96 x 97 = 93
Multiply the numbers in the circles. 4 x 3 = 12.
This is the second part of the answer.
96 x 97 = 9312”
very cool!... I sent for the book…
Wednesday, April 25, 2007
Tuesday, April 24, 2007
My Brazilian Father, mentor and friend Ubiratan D´Ambrosio sent this today. It was taken in Guarapuava, Paraná, Brasil. It is especially funny as
Goggle search gets you to:
|Endereço:||ROD. SC 477 - KM "0", S/N|
|Cidade:||Canoinhas - SC|
An all my life I felt besieged by Orey as a last name (Oreo, O´Rey, Drey…). Travel is great… it opens ones eyes...
Sunday, April 22, 2007
Then after “All Things Considered” which I enjoyed as I walked around my yard a good friend... we will refer to her as “Santa Eda” came by with a flan and we had tea and talked…
Finished the evening watching the Discovery channel’s “Planet Earth”. My new camera arrives on Wednesday… I can only aspire to such amazing shots.
Picture here is my labyrinth in my back yard...