Why are Laura and Jane " not sure " ?
Résumé
The mathematical knowledge for teaching (MKT) measures have been widely adopted by researchers. This paper reports on a case study of two mathematics teachers. The aim of the study was to investigate challenges regarding extensive use of " I'm not sure " as a suggested solution in the multiple-choice items. The connection between teachers' responses to multiple-choice MKT items, their written responses to corresponding open-ended questions (long responses) and group discussions are analyzed. The findings indicate that teachers' responses to multiple-choice items do not always correspond with the understanding revealed in responses to open-ended questions and in group discussions.
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