3.1. Eliciting weightings from individual experts
This phase is invoked to elicit the relationships of the test sheet from individual experts (experienced teachers). In this phase, each expert is asked to provide the weightings between the test item and the concept. Assume that the test sheet, which covers 4 concepts, contains 10 items. Expert A's opinions for determining the weighting values in this test sheet are shown in Table 2, where C1, C2, ...,C4 represent “Positive integer”, “Addition of positive integer”, “Subtraction of positive integer”, and “Multiplication of positive integer”, respectively