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Computational Diversions: The Return of the Spherical Turtle

Computational Diversions: The Return of the Spherical Turtle Tech Know Learn (2012) 17:115–122 DOI 10.1007/s10758-012-9195-4 COMPUTATIO NAL D I V ERSION S Computational Diversions: The Return of the Spherical Turtle Michael Eisenberg Published online: 9 December 2012 Springer Science+Business Media Dordrecht 2012 Two years ago in this column (time flies!), I discussed the idea of programming a Logo turtle to move about the surface of a sphere. This was an idea explored at length in Abelson and diSessa’s (1980) book Turtle Geometry, and it’s a fun way of introducing many of the seemingly strange ideas of non-Euclidean geometry. In that earlier column, I described a still-embryonic programming system that permitted spherical turtle programs to be drawn on the giant spherical screen, ‘‘Science on a Sphere’’, produced by the National Oceanic and Atmospheric Administration (NOAA). The column closed with a photograph of a Logo ‘‘flower’’ drawn on the giant sphere at our local Fiske Planetarium here in Boulder, and I’ve brought back that photograph as Fig. 1 for this column: the flower was a thank- you gift of sorts for Hal Abelson and Andrea diSessa in honor of their remarkable and timeless book. This essay returns to the topic of spherical turtle geometry, but in a more participatory http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Technology, Knowledge and Learning" Springer Journals

Computational Diversions: The Return of the Spherical Turtle

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Publisher
Springer Journals
Copyright
Copyright © 2012 by Springer Science+Business Media Dordrecht
Subject
Education; Learning & Instruction; Mathematics Education; Educational Technology; Science Education; Arts Education
ISSN
2211-1662
eISSN
2211-1670
DOI
10.1007/s10758-012-9195-4
Publisher site
See Article on Publisher Site

Abstract

Tech Know Learn (2012) 17:115–122 DOI 10.1007/s10758-012-9195-4 COMPUTATIO NAL D I V ERSION S Computational Diversions: The Return of the Spherical Turtle Michael Eisenberg Published online: 9 December 2012 Springer Science+Business Media Dordrecht 2012 Two years ago in this column (time flies!), I discussed the idea of programming a Logo turtle to move about the surface of a sphere. This was an idea explored at length in Abelson and diSessa’s (1980) book Turtle Geometry, and it’s a fun way of introducing many of the seemingly strange ideas of non-Euclidean geometry. In that earlier column, I described a still-embryonic programming system that permitted spherical turtle programs to be drawn on the giant spherical screen, ‘‘Science on a Sphere’’, produced by the National Oceanic and Atmospheric Administration (NOAA). The column closed with a photograph of a Logo ‘‘flower’’ drawn on the giant sphere at our local Fiske Planetarium here in Boulder, and I’ve brought back that photograph as Fig. 1 for this column: the flower was a thank- you gift of sorts for Hal Abelson and Andrea diSessa in honor of their remarkable and timeless book. This essay returns to the topic of spherical turtle geometry, but in a more participatory

Journal

"Technology, Knowledge and Learning"Springer Journals

Published: Dec 9, 2012

References