6–10 Jul 2026
University of the Western Cape
Africa/Johannesburg timezone
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Diagnostic Assessment of Conceptual Understanding in Direct Current Circuits Among Pre-Service and In-Service Teachers

8 Jul 2026, 09:30
20m
Lecture Hall C9 (University of the Western Cape)

Lecture Hall C9

University of the Western Cape

Oral Presentation Track E - Physics for Development, Education and Outreach Physics for Development, Education and Outreach

Speaker

Mphiriseni Khwanda (University of johannesburg)

Description

A sound understanding of fundamental concepts is a key goal of science education; however, both pre-service and in-service teachers often demonstrate limited conceptual understanding, particularly in direct current (DC) circuits. Grounded in constructivist learning theory, which emphasizes the role of prior knowledge in meaningful learning, this study highlights the importance of diagnostic assessment before instruction. The Inventory of Basic Concepts in DC Circuits (IBC-DC) was employed to evaluate participants’ conceptual understanding and identify misconceptions. The study aimed to determine: (i) the extent to which second-year pre-service teachers understand basic DC circuit concepts, and (ii) the level of understanding among in-service teachers. The instrument was administered prior to formal instruction and professional development workshops, respectively. Findings reveal notable gaps in conceptual understanding across both groups, underscoring the need for targeted instructional interventions. The study demonstrates the value of concept inventories in informing effective teaching strategies in physics education.

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Author

Mphiriseni Khwanda (University of johannesburg)

Co-authors

Buyi Sondezi (University of Johannesburg) Paul Molefe

Presentation materials

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