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Topic: Visual Presentation of Real Number System
Replies: 61   Last Post: Dec 11, 2013 11:12 PM

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 Robert Hansen Posts: 11,345 From: Florida Registered: 6/22/09
Re: Visual Presentation of Real Number System
Posted: Nov 21, 2013 6:27 PM
 att1.html (2.3 K)

A slow year at the math department I guess.

Bob Hansen

> On Nov 21, 2013, at 10:28 AM, Jerry Becker <jbecker@SIU.EDU> wrote:
>
> Colleagues -
>
> Prof. Hyunyong SHIN would like to share the attached article that deals with the number line as a visual representation of the real number system.
>
> Abstract:
>
> Abstract Number line is a visual representation of real number system. There was no arrow at either
> end of the representation in the early figures of number line. But after the 19th century, number lines with one arrow on the right hand side have begun to appear. In USA, however, many textbooks of secondary school mathematics have number lines with arrows on the left hand side as well as on the right hand side. It is quite different from the global standard. We argue that it is mathematically reasonable for number lines to have an arrow only on the right side.
>
> This is for your information, from
>
> Professor Hyunyong Shin
> Department of Mathematics Education
> Korea National University of Education
> Chungbuk 363-791, KOREA
> E-mail: shin@knue.ac.kr
>
>
> --
> Jerry P. Becker
> Dept. of Curriculum & Instruction
> Southern Illinois University
> 625 Wham Drive
> Mail Code 4610
> Carbondale, IL 62901-4610
> Phone: (618) 453-4241 [O]
> (618) 457-8903 [H]
> Fax: (618) 453-4244
> E-mail: jbecker@siu.edu
> <number-line-1.pdf>

Date Subject Author
11/21/13 Jerry P. Becker
11/21/13 Dave L. Renfro
11/21/13 Gary Tupper
11/25/13 Gary Tupper
11/25/13 Robert Hansen
11/25/13 Gary Tupper
11/25/13 Robert Hansen
11/25/13 Robert Hansen
11/25/13 Joe Niederberger
11/21/13 Robert Hansen
11/24/13 Joe Niederberger
11/25/13 Robert Hansen
11/25/13 Joe Niederberger
11/25/13 Joe Niederberger
11/25/13 Robert Hansen
11/25/13 Joe Niederberger
11/25/13 Robert Hansen
11/25/13 Robert Hansen
11/25/13 Robert Hansen
11/26/13 Joe Niederberger
11/26/13 Robert Hansen
11/26/13 Robert Hansen
11/26/13 Robert Hansen
11/26/13 Robert Hansen
11/26/13 Joe Niederberger
11/26/13 Louis Talman
11/26/13 Joe Niederberger
11/26/13 Robert Hansen
11/26/13 Joe Niederberger
11/26/13 Robert Hansen
11/26/13 Joe Niederberger
11/26/13 Gary Tupper
11/26/13 Robert Hansen
11/26/13 Joe Niederberger
11/26/13 Robert Hansen
11/26/13 Joe Niederberger
11/26/13 Joe Niederberger
11/26/13 Joe Niederberger
11/27/13 Joe Niederberger
11/27/13 Robert Hansen
11/27/13 Joe Niederberger
11/27/13 Robert Hansen
11/27/13 Joe Niederberger
11/27/13 Robert Hansen
11/27/13 Joe Niederberger
11/28/13 Robert Hansen
11/27/13 Joe Niederberger
11/28/13 Joe Niederberger
11/28/13 GS Chandy
11/28/13 Joe Niederberger
11/29/13 Robert Hansen
11/28/13 Joe Niederberger
11/29/13 GS Chandy
11/29/13 Joe Niederberger
11/29/13 Joe Niederberger
11/29/13 Robert Hansen
11/29/13 Joe Niederberger
12/4/13 GS Chandy
12/4/13 Joe Niederberger
12/11/13 Joe Niederberger
12/11/13 Robert Hansen
12/11/13 GS Chandy