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Students’ Guided Reinvention of Definition of Limit of a Sequence With Interactive Technology
Abstract
In a course emphasizing interactive technology, 19 students, including 18 mathematics education majors, mostly in their first year, reinvented the definition of limit of a sequence while working in small cooperative groups. The class spent four sessions of 75 minutes each on a cyclical process of guided reinvention of the definition of limit of a sequence for a particular value, L = 5. Tentative definitions were tested systematically against a well-chosen set of examples of sequences that converged, or not, to 5. Students shared their definitions and the problems they were having with their definitions with their peers through whole class presentations and public postings on a course electronic forum. Student presenters received feedback from their peers both in person and through the forum. The approximation, error, error bound framework was used to help structure students’ thinking. The use of interactive examples with epsilon bands and movable N values, in which students could zoom in to adjust the value of epsilon or zoom out to find a value of N, proved especially helpful in the process. The changes in their tentative definitions show the difficulties students had as well as the learning that occurred.
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Enabling Collaboration and Video Assessment: Exposing Trends in Science Preservice Teachers’ Assessments
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Abstract
This article details a new, free resource for continuous video assessment named YouDemo. The tool enables real time rating of uploaded YouTube videos for use in science, technology, engineering, and mathematics (STEM) education and beyond. The authors discuss trends of preservice science teachers’ assessments of self- and peer-created videos using the tool. The trends were identified from over 900 assessments of 170 videos, with over 131 unique users. Included in this data set is a 2-year study focusing on 27 preservice science teachers (from a 5-year study of 76 total science preservice teachers) and their use of the tool. The authors collected both quantitative (numerical scores) and qualitative data (open-ended questions) from the 27 participants. Findings show that (a) rating two metrics had a non-zero bias between the two metrics; (b) preservice teachers found continuous video rating beneficial in enabling video assessment, promoting critical thinking, and increasing engagement; and (c) preservice teacher’s self-assessment was uncorrelated with their peers’ assessment. Additionally, the elements to enable skill improvement were met, including (a) a well defined task, (b) a challenging task, (c) immediate feedback, (d) error correction, and (e) practice. Implications include improvement in preservice teacher reflection and discussions, especially related to STEM content and pedagogy.
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Commentary: Building Web Research Strategies for Teachers and Students
Enabling Collaboration and Video Assessment: Exposing Trends in Science Preservice Teachers’ Assessments
By
Abstract
This article details a new, free resource for continuous video assessment named YouDemo. The tool enables real time rating of uploaded YouTube videos for use in science, technology, engineering, and mathematics (STEM) education and beyond. The authors discuss trends of preservice science teachers’ assessments of self- and peer-created videos using the tool. The trends were identified from over 900 assessments of 170 videos, with over 131 unique users. Included in this data set is a 2-year study focusing on 27 preservice science teachers (from a 5-year study of 76 total science preservice teachers) and their use of the tool. The authors collected both quantitative (numerical scores) and qualitative data (open-ended questions) from the 27 participants. Findings show that (a) rating two metrics had a non-zero bias between the two metrics; (b) preservice teachers found continuous video rating beneficial in enabling video assessment, promoting critical thinking, and increasing engagement; and (c) preservice teacher’s self-assessment was uncorrelated with their peers’ assessment. Additionally, the elements to enable skill improvement were met, including (a) a well defined task, (b) a challenging task, (c) immediate feedback, (d) error correction, and (e) practice. Implications include improvement in preservice teacher reflection and discussions, especially related to STEM content and pedagogy.
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Commentary: Building Web Research Strategies for Teachers and Students
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Technological Modeling: Faculty Use of Technologies in Preservice Teacher Education from 2004 to 2012
Technological Modeling: Faculty Use of Technologies in Preservice Teacher Education from 2004 to 2012
Abstract
This 7-year, cross-sectional study of a 1:1 laptop teacher preparatory program in the United States examined the nature and change in faculty technological modeling. Using survey methods, preservice teachers (n = 932) reported their faculty’s use of technological activities in coursework. Through descriptive statistics, chi-square tests, and qualitative analysis, researchers found change in the number of faculty members incorporating presentation, word processing, email, learning management systems, and digital video activities in coursework. Emergent activities with low but increasing use included digital audio, social networking, text messaging, and blog activities. Less widely reported activities included social bookmarking, desktop publishing, webpage creation, and games. Overall results indicated all students did not report similar faculty technological modeling, which also meant that students had divergent technological experiences from which to base their future teaching. The discussion outlines an expansion of educational technology integration across teacher education methods/content courses to increase systematic and contemporary coverage of technological advancements in education through codeveloped curriculum and coteaching by educational technology and teacher education faculty.
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Source: The CITE Journal