Flipping a college mathematics classroom: An action research project Raoul Amstelveen 1 Received: 7 August 2018 /Accepted: 2 November 2018/ # Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract In this action research study, a flipped and non-flipped college-level mathematics class- room were compared. Participants in the flipped classroom watched video lessons outside of class and engaged in classwork problems during class. The non-flipped classroom consisted of a lecture then assigned classwork problems during class. Descriptive statis- tics revealed that learners preferred a flipped classroom to a non-flipped classroom and that the video lectures helped them learn the course material. A one-way ANCOVA on posttest showed no difference between learners in the flipped classroom and non-flipped classroom with pre-test scores as a covariate. Although independent samples t-test did not reveal statistically significant differences on several in-class examinations between the two groups, small positive effects showed in the flipped classroom students’ perfor- mance. Course evaluation of the two groups showed a small to large-size effect on five items, pertaining to this study. Learners in the flipped classroom perceived that the video lectures helped them to learn more mathematics compared to learners in the non-flipped classroom who did not use video lectures (p = .039). Keywords Flipped learning . Flipped classroom . Course evaluation . College algebra . College mathematics 1 Introduction Flipped classrooms (also known as inverted or reversed classrooms) have recently become a popular instructional strategy in higher education. In flipped classrooms, the student and teacher reverse roles. Instruction that traditionally takes place in the classroom now takes place as homework and drill or practice exercises usually assigned as homework now take place in the classroom. In theory, learners exposed to lower Education and Information Technologies https://doi.org/10.1007/s10639-018-9834-z * Raoul Amstelveen ramstelveen@jwu.edu 1 College of Arts & Sciences, Johnson & Wales University, 1701 NE 127th Street, North Miami, FL 33181, USA