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Topic: A question about straight lines
Replies: 103   Last Post: Feb 8, 2014 8:28 AM

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 Robert Hansen Posts: 11,345 From: Florida Registered: 6/22/09
Re: A question about straight lines
Posted: Jan 31, 2014 1:39 PM

On Jan 31, 2014, at 12:19 PM, Joe Niederberger <niederberger@comcast.net> wrote:

> Actually, I think we can improve on this a bit. Rather than thinking of "glue", think of open ends and closed ends line segments as being like plugs: closed (male) to open (female). To plug them together you need to mate male to female or vice versa. And for these purposes a single point will also act like a two-sided male plug adapter.

You probably intended this as a game of analogies between two adults already blessed with a sophisticated understanding of points, lines and infinity. The following is directed at using such accidental analogies in teaching?

How does this help a student? I can?t see how this in any way leads to any understanding, sophisticated or not, of points, lines and infinity. When I reach such silliness in my own pedagogy I STOP. You are beyond the student?s thinking. Just stick with the mechanical definitions of open and closed segments of real numbers. They will get the sophistication in time, and with use.

Also, would a young student even understand the meaning or the source of the meaning for male and female plugs?:)

Bob Hansen

Date Subject Author
1/26/14 Neighbor
1/26/14 kirby urner
1/27/14 Neighbor
1/27/14 Robert Hansen
1/27/14 Bishop, Wayne
1/27/14 kirby urner
1/27/14 Neighbor
1/27/14 Robert Hansen
1/27/14 Neighbor
1/27/14 Neighbor
1/28/14 Neighbor
1/28/14 Robert Hansen
1/28/14 Joe Niederberger
1/28/14 Robert Hansen
1/28/14 Neighbor
1/28/14 Robert Hansen
1/28/14 Joe Niederberger
1/28/14 Joe Niederberger
1/28/14 Neighbor
1/28/14 Robert Hansen
1/28/14 Joe Niederberger
1/28/14 Joe Niederberger
1/28/14 Robert Hansen
1/28/14 Neighbor
1/28/14 Gary Tupper
1/28/14 Robert Hansen
1/28/14 Joe Niederberger
1/28/14 Joe Niederberger
1/28/14 Louis Talman
1/28/14 Joe Niederberger
1/28/14 Joe Niederberger
1/28/14 Joe Niederberger
1/28/14 Joe Niederberger
1/29/14 Robert Hansen
1/29/14 Bishop, Wayne
1/29/14 GS Chandy
1/29/14 Domenico Rosa
1/29/14 Neighbor
1/29/14 Joe Niederberger
1/29/14 Neighbor
1/29/14 Domenico Rosa
1/30/14 Bishop, Wayne
1/29/14 Joe Niederberger
1/29/14 Neighbor
1/29/14 Robert Hansen
1/29/14 Joe Niederberger
1/29/14 Joe Niederberger
1/29/14 Robert Hansen
1/30/14 Neighbor
1/29/14 Robert Hansen
1/29/14 Joe Niederberger
1/30/14 Louis Talman
1/29/14 Joe Niederberger
1/30/14 Neighbor
1/30/14 Jonathan J. Crabtree
1/30/14 Joe Niederberger
1/30/14 Joe Niederberger
1/31/14 kirby urner
1/30/14 Joe Niederberger
1/31/14 Neighbor
1/30/14 Joe Niederberger
1/31/14 Neighbor
1/31/14 Robert Hansen
1/31/14 Joe Niederberger
1/31/14 Joe Niederberger
1/31/14 Joe Niederberger
1/31/14 Joe Niederberger
1/31/14 Robert Hansen
1/31/14 Joe Niederberger
1/31/14 Neighbor
1/31/14 Robert Hansen
1/31/14 Joe Niederberger
1/31/14 Joe Niederberger
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1/31/14 GS Chandy
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2/1/14 GS Chandy
2/1/14 Robert Hansen
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2/1/14 Robert Hansen
2/1/14 Joe Niederberger
2/1/14 Robert Hansen
2/1/14 Joe Niederberger
2/2/14 Robert Hansen
2/2/14 kirby urner
2/1/14 Joe Niederberger
2/2/14 Robert Hansen
2/2/14 James Elander
2/2/14 GS Chandy
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