The effects of a dialogical argumentation and assessment for learning instruction model (DAAFLIM) on science students’ conception of selected scientific topics

Abstract

The central concern of this study has been to determine the effectiveness or otherwise of a combined Dialogical Argumentation Instructional Method (DAIM) and the Assessment for Learning Model (DAAFLIM) strategies in enhancing Tertiary and Vocational Education and Training (TVET) students’ conceptions of selected scientific topics. The extant literature has shown that students often hold other worldviews or funds of knowledge, which might be in conflict with canonical school science. In light of this, DAAFLIM has been chosen for a number of reasons: (1) it has been shown to be effective for revealing students’ scientific and alternative worldviews; (2) it provides the learning environment that encourages students to express themselves freely, exchange views with others, reflect on what they have learned, and even to change their minds in the face of stronger arguments; (3) it is compatible with the Curriculum and Assessment Policy Statements (CAPS) curriculum which emphasizes that educators should integrate school science with students’ indigenous knowledge as a way to make the former more relevant to their sociocultural environment; (4) assists educators to plan instruction in accordance with the needs of multicultural science classroom; and (5) the combination of classroom discourses with continuous or formative assessment (as exemplified by DAAFLIM), instead of the usual terminal summative assessment, tends to mitigate the fears that students usually associate with assessment. Specifically, a group of TVET students i.e. the Experimental group (E-group) was exposed to DAAFLIM while the other group i.e. the Control group (C-group) was exposed to traditional instruction method (TIM).