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Factors in the Use of Lap‐dissolve Presentation Methods for Teaching the Visualisation of Spatial Transformations
Author(s) -
Seddon G. M.,
Farra A. O. K.,
Jusoh I.
Publication year - 1984
Publication title -
british educational research journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.171
H-Index - 89
eISSN - 1469-3518
pISSN - 0141-1926
DOI - 10.1080/0141192840100206
Subject(s) - presentation (obstetrics) , mathematics education , visualization , unit (ring theory) , psychology , computer science , medicine , artificial intelligence , radiology
Two experiments were performed to study the effects of varying the exposure‐time and the dissolve‐time in the use of a lap‐dissolve control unit in presenting programmes intended to teach 14‐15‐year‐old students to visualise the effects of performing reflections and rotations on molecules represented in diagrams. Both experiments employed a two‐dimensional design with three levels for each of the two factors. The Rotations Programme was not effective with any of the combinations of exposure‐ and dissolve‐times. The effectiveness of the Reflections Programme showed a significant U‐shaped relationship as the exposure‐time changed from 5 through 7.5 to 10 seconds. There was no significant effect involving dissolve‐time.