Abstract
The main goal of the study reported in our paper is to characterize teachers’ choice of examples in and for the mathematics classroom. Our data is based on 54 lesson observations of five different teachers. Altogether 15 groups of students were observed, three seventh grade, six eighth grade, and six ninth grade classes. The classes varied according to their level—seven classes of top level students and six classes of mixed—average and low level students. In addition, pre and post lesson interviews with the teachers were conducted, and their lesson plans were examined. Data analysis was done in an iterative way, and the categories we explored emerged accordingly. We distinguish between pre-planned and spontaneous examples, and examine their manifestations, as well as the different kinds of underlying considerations teachers employ in making their choices, and the kinds of knowledge they need to draw on. We conclude with a dynamic framework accounting for teachers’ choices and generation of examples in the course of teaching mathematics.
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Notes
We use the term ‘instructional example’, to refer to any example offered by either a teacher or a student within the context of learning a particular topic.
In this section we consider “teacher-generated examples” any example selected and presented by the teacher, even if it was taken from textbooks or other sources, with no actual generation on the part of the teacher.
According to the Viète formula, the roots x1 and x2 of a quadratic equation \(a \cdot x^2 + b \cdot x + c = 0\) satisfy the following conditions: \(x_1 + x_2 = - \frac{b}{a},x_1 \cdot x_2 = \frac{c}{a}\left( {x_1 ,x_2 \in \mathbb{C}} \right)\).
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This research was supported by The Israel Science Foundation (grant 834/04, O. Zaslavsky PI).
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Zodik, I., Zaslavsky, O. Characteristics of teachers’ choice of examples in and for the mathematics classroom. Educ Stud Math 69, 165–182 (2008). https://doi.org/10.1007/s10649-008-9140-6
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DOI: https://doi.org/10.1007/s10649-008-9140-6