Abstract
Research has indicated a great need to evaluate the experiences related to creating an electronic portfolio to contribute to the overall teaching excellence. Instructors use rubrics to evaluate electronic portfolios, but no study has been conducted to examine whether the rubrics are valid to measure students' learning. This study described the process of developing an electronic portfolio rubric, and examined its validity and reliability to assess preservice science teachers' performance. Electronic portfolios of 59 preservice teachers from a Midwestern University were included in the analysis. A rubric was developed by the authors to assess the electronic portfolios. The data analysis indicated a reliability of (r= .756) for the rubric. Item analysis was also conducted to examine the construct validity of the rubric. The major results indicated that rubric can be a pragmatic vehicle to evaluate electronic portfolios. PUBLICATION ABSTRACT
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