Reliability refers to the internal consistency of learning materials and the dependability of contents and methods, thereby facilitating the implementation of the teaching/learning process.
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Internal coherence: Are the materials well constructed with a consistent inter-relationship between the parts?
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Methodological integrity: Do the materials reflect validated methodological premises in the selection of activities, exercises etc.?
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Factual integrity: Do the materials present accurate information, examples and statements and authentic social behaviour?
