This study extends past research on students' understanding of slope by analyzing college students' mistakes on routine tasks involving slope. We conduct quantitative and qualitative analysis of students' mistakes to extract information regarding slope conceptualizations described in prior research. Results delineate procedural proficiencies and…

In this article we discuss the findings of our research on students' understanding of vector concepts in problems without physical context. First, we develop a complete taxonomy of the most frequent errors made by university students when learning vector concepts. This study is based on the results of several test administrations of open-ended…

The concept "trochiac meter" was taught to 180 college Ss by means of eight treatment conditions. The independent variables involved presenting a definition (D) or instances (E) or both combined with attribute definition (A) and/or atrribute prompting (P). Dependent variables were corrected classification and specified classification…