Abstract

The present work focuses on a classroom application for evaluating the effectiveness of the APOS/ACE instructional treatment for teaching mathematics to engineering students. Using linguistic (qualitative) grades, the assessment of the mean student performance is realized with the help of grey numbers and the assessment of their quality performance by calculating the Grade Point Average (GPA) index. A neutrosophic assessment method is also applied for evaluating the overall student performance, because the instructor had doubts about the accuracy of the qualitative grades assigned to some students.

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