Geometer's Sketchpad: How do I put a grid over an image?

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Discussion Overview

The discussion revolves around the use of Geometer's Sketchpad (GSP) to overlay a grid on an image, specifically for the purpose of superimposing a grid over a map. Participants explore the feasibility of this feature and share experiences related to different versions of the software.

Discussion Character

  • Technical explanation, Homework-related

Main Points Raised

  • One participant, tubegeek, inquires about the possibility of using an image as a background for a function graph in GSP and seeks alternative suggestions if this is not feasible.
  • Another participant confirms that it is straightforward to overlay a grid on an image and provides a link to a demonstration.
  • Tubegeek expresses gratitude for the link and shares difficulties encountered with cutting and pasting on school machines running an older version of GSP, questioning whether this feature was recently added.
  • A later reply suggests that the cutting and pasting feature may have been available since version 4.03.

Areas of Agreement / Disagreement

Participants generally agree that overlaying a grid on an image is possible, but there are unresolved issues regarding the functionality of different versions of GSP and the specific experiences of users with those versions.

Contextual Notes

The discussion highlights potential limitations related to software version differences and user experiences, but does not resolve these issues.

tubegeek
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Is it possible to use an image as a background to a function graph in Geometer's Sketchpad, so that I could superimpose a grid over a map? Does anybody have an alternative suggestion if that's not possible in GSP?

Thanks,

-tubegeek
 
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Yes, it is pretty straightforward - see my post at mathfest.blogspot.com/2008/01/strauss-sketchpad-photos-quadratics-and.html
 
rossisen said:
Yes, it is pretty straightforward - see my post at mathfest.blogspot.com/2008/01/strauss-sketchpad-photos-quadratics-and.html

Thanks for the link, great demo.

For some reason cutting and pasting wasn't working for me on the machines at school - do you know if that is a recently added feature? Because the machines at school run GSP 4.06 and I have 4.07 at home (which did the job fine.)

Hmm. I'll have to try harder on it at school now that I know I SHOULD be able to get it to work.



- tubegeek
 
I would guess that it was in 4.03, at least.
 

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