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2013 Conference Proceedings - University of Nevada, Las Vegas

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given to the 33 students on the MPI, 55.6% <strong>of</strong> the questions on the pre-MPI were attemptedusing a spatial approach. This percentage rose to 62.3% on the post-MPI. The average grade onthe pre-MPI to post-MPI changed as well, increasing from 60.6% to 67.7%. As with the PSVT,a t-test for paired samples was used to compare the students’ preference for using a visual-spatialapproach for problem solving before and after eight weeks <strong>of</strong> spatial task implementation. Asignificant difference was revealed in the scores for the pre-MPI (M=4.76, SD=14.16) and thepost-MPI (M=8.76, SD=15.94) conditions; t(32)=2.42, p=0.021. These results suggest thatinclusion <strong>of</strong> spatial tasks had an effect on the participants’ preference for using a spatialapproach when solving problems on the MPI. Specifically, these results suggest that theinclusion <strong>of</strong> spatial activities increased the preference for using schematic drawings and,therefore, a spatial approach when solving mathematical problems.This study showed a positive correlation between the PSVT and the MPI, and therebystrengthened the body <strong>of</strong> existing literature on the relationship between spatial thinking andproblem solving. Improvement on one post-measure typically indicated improvement on theother. Through journal responses and discussions, participants stated they had “more confidence”when taking the MPI the second time. Fisher (2005) explained that “visual expression provides ameans <strong>of</strong> formulating and solving problems” (p.16), so improvement on these two instrumentsmakes sense. Based on these results, it is apparent that exercises in spatial thinking affect spatialability as well as one’s preference for using a spatial approach when problem solving inmathematics. A change in students’ beliefs seems like a logical extension <strong>of</strong> the change instudents’ confidence and ability.Spatial Thinking and Pre-service Teachers’ BeliefsIn addition to examining the influence spatial tasks had on ability, this study explored theimpact <strong>of</strong> spatial activities on beliefs <strong>of</strong> pre-service elementary teachers. The beliefs <strong>of</strong> preserviceteachers are an important component <strong>of</strong> spatial thinking and problem solving, sinceresearch has shown that teachers who are more confident in their own spatial abilities are morelikely to use such strategies in their classrooms (Battista, 1990; Presmeg, 1986). Qualitativeanalysis on the STAS showed considerable change in teacher beliefs concerning the usefulness<strong>of</strong> spatial thinking outside <strong>of</strong> mathematics.The STAS, developed by Hanlon (2009), was a 15-question, five-point, Likert-type surveythat partially focused on measuring beliefs regarding spatial thinking. Notably, question number<strong>Proceedings</strong> <strong>of</strong> the 40 th Annual Meeting <strong>of</strong> the Research Council on Mathematics Learning <strong>2013</strong> 72

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