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March 11th, 2016, 10:41 AM  #1 
Member Joined: Oct 2015 From: Arizona Posts: 57 Thanks: 0 Math Focus: Analysis  Who is organizing the opposition to Common Core?
I propose to write a textbook on the subject of geometry: https://www.researchgate.net/publica...Multiplication A number of people have expressed an interest in using this book when it is complete and I am already making arrangements for it to be translated into Russian. But here in America it cannot be published because it is not Common Core. Who is organizing the opposition to Common Core? Publication of this book cannot advance in my own land until Common Core is defeated, so I need to get in touch with the resistance. And I mean teachers, not parents. The latter, while their hearts are in the right place, have made a lot of misinformed statements about Common Core that its proponents like to quote for the purpose of making the opposition look stupid. 
March 11th, 2016, 10:48 AM  #2  
Senior Member Joined: Dec 2012 From: Hong Kong Posts: 853 Thanks: 311 Math Focus: Stochastic processes, statistical inference, data mining, computational linguistics  Quote:
 
March 12th, 2016, 03:38 PM  #3 
Member Joined: Oct 2015 From: Arizona Posts: 57 Thanks: 0 Math Focus: Analysis 
The U.S. Common Core for geometry prohibits teaching students Euclid's five postulates. This may seem incredible to parents who learned geometry from Euclid's Elements, but they can verify that their son's or daughter's textbook nowhere lists these five postulates. Common Core admits that, "Later in college some students develop Euclidean and other geometries carefully from a small set of axioms." But they insist that this is not allowed in high school. Also, Common Core makes transformations the "spine" of geometry. "In the approach taken here, two geometric figures are defined to be congruent if there is a sequence of rigid motions that carries one onto the other. This is the principle of superposition." But superposition, which Euclid used in Proposition IV and nowhere else has been regarded with suspicion for 2300 years. Many have pointed out that, if it were a viable proof, then it would appear on every page of the Elements, but obviously Euclid was not comfortable with it or he would not have used it only once to get past that initial hump and then then never again. I begin with a statement of Euclid's five postulates and then base the entire rest of the book only on those postulates and on theorems that I have already proven. Also, I refuse to use superposition but insist on only those axioms accepted in modern abstract algebra. For these two reasons, Common Core forbids the use of my textbook in America. Calling me "unconventional" is just name calling. Last edited by skipjack; April 8th, 2016 at 01:46 PM. 
March 14th, 2016, 03:00 PM  #4 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,261 Thanks: 894 
The first thing I notice is that "quadrilateral" is define as "The union of two triangles adjacent on their longest sides". The usual definition is simply "a figure with four sides", "quad" meaning "four" and "lateral" meaning "line" or "side". The two definitions are NOT the same, your definition not counting as "quadrilaterals" many figures that have four sides.

March 15th, 2016, 11:43 AM  #5  
Member Joined: Oct 2015 From: Arizona Posts: 57 Thanks: 0 Math Focus: Analysis  Quote:
BTW About a month ago I reworded that definition slightly, though it is still true that I do not consider foursided concave figures. You might want to download my paper again. It is an ongoing project  it gets updated all the time.  
April 3rd, 2016, 03:47 PM  #6 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,261 Thanks: 894 
So basically, this has nothing to do with 'Common Core'. You want to be able to publish a book that expresses your idiosyncrasies. Even if there were no 'Common Core' it is unlikely that any Publisher would be interested.

April 8th, 2016, 12:18 PM  #7 
Banned Camp Joined: Apr 2016 From: Australia Posts: 244 Thanks: 29 Math Focus: horses,cash me outside how bow dah, trash doves 
Yep look it's been great pal excellent work with the publication. You truly are an inspiration to all of us in creating what appears essentially everything I would find if I googled geometry, but in a pdf mixed in with a bunch of spam written by a seemingly incoherent author.
Last edited by skipjack; April 8th, 2016 at 01:52 PM. 
April 8th, 2016, 12:21 PM  #8 
Math Team Joined: Dec 2013 From: Colombia Posts: 7,508 Thanks: 2513 Math Focus: Mainly analysis and algebra  
April 10th, 2016, 05:54 PM  #9 
Banned Camp Joined: Apr 2016 From: Australia Posts: 244 Thanks: 29 Math Focus: horses,cash me outside how bow dah, trash doves  hmmm
cant remember are those the type of lens that cause "eye burny" if its held the wrong way round aimed at the sun or is that convex?


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