Background: Mixed methods research designs in engineering education often frame the "mixed" aspect of the design from the perspective of data collection. However, intentional mixing throughout the research design--particularly during data analysis--may enable richer meta-inferences about a phenomenon. Purpose: This paper provides…

Analyzed student productivity values determined by three tests in terms of three presentation methods and three subject materials. Concluded there was a preference for the taped lecture with visual aid over the methods in teaching all kinds of materials. (CC)