In addition, during the interview, teachers were shown and asked to solve four typical
middle school mathematics tasks (shown in Table 2). After working on each task, teachers
were asked to discuss the role of representation in their solution and solution process.
Depending on their responses, teachers were prompted to discuss how these representations
informed their thinking, how, if at all, these representations are related, and whether they
could generate additional representations for that particular problem. Subsequently,
teachers were shown a set of researcher-constructed solutions to each problem—solutions
that varied with respect to the types and extent of representation use—and were asked to
evaluate each one of them for their usefulness, value and role in solving the problem. The
mathematical tasks and solutions were chosen so that the underlying mathematical concepts
were not difficult; ideally the focus of the teachers should be on the representation
and overall solution presented rather than on trying to understand the mathematics.
In addition, during the interview, teachers were shown and asked to solve four typical
middle school mathematics tasks (shown in Table 2). After working on each task, teachers
were asked to discuss the role of representation in their solution and solution process.
Depending on their responses, teachers were prompted to discuss how these representations
informed their thinking, how, if at all, these representations are related, and whether they
could generate additional representations for that particular problem. Subsequently,
teachers were shown a set of researcher-constructed solutions to each problem—solutions
that varied with respect to the types and extent of representation use—and were asked to
evaluate each one of them for their usefulness, value and role in solving the problem. The
mathematical tasks and solutions were chosen so that the underlying mathematical concepts
were not difficult; ideally the focus of the teachers should be on the representation
and overall solution presented rather than on trying to understand the mathematics.
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