Lack of set theory relevant prerequisite knowledge.

Many students struggle with college mathematics topics due to a lack of mastery of prerequisite knowledge. Set theory language is one such prerequisite for linear algebra courses. Many students' mistakes on linear algebra questions reveal a lack of mastery of set theory knowledge. This paper reports the findings of a qualitative analysis of a group of linear algebra students' mistakes on a set of linear algebra questions. The paper also details an in-time intervention (a pedagogical approach) to enhance students' understanding of linear algebra concepts through advancing their set theory knowledge. Mathematics teachers can consider similar approaches to address their students' mistakes. [ABSTRACT FROM AUTHOR]