1. Abell, S. K.: Twenty years later: Does pedagogical content knowledge remain a useful idea?, Int. J. Sci. Educ., 30, 1405–1416, https://doi.org/10.1080/09500690802187041, 2008.
2. Aghakouchak, A. and Habib, E.: Application of a conceptual hydrologic model in teaching hydrologic processes, Int. J. Eng. Educ., 26, 1–11, 2010.
3. Albanese, M. A. and Mitchell, S.: Problem-based learning: A review of literature on its outcomes and implementation issues, Academic Med., 68, 52–81, 1993.
4. Alexander, P.: Mapping the multidimensional nature of domain learning: The interplay of cognitive, motivational, and strategic forces, Adv. Motiv. Achieve., 10, 213–250, 1997.
5. Anderson, L., Krathwohl, D., Airasian, P., Cruikshak, K., Mayer, R., Pintrich, P., Raths, J., and Wittrock, J.: A taxonomy for learning, teaching, and assessing: A revision of Bloom's taxonomy of educational objectives, Longman, New York, 2001.