Teachers gain Pedagogical Content Knowledge from various sources. Friedrichsen, Abell, Pareja, Brown, Lankford and Volkmann (2009) distinguished three potential sources of Pedagogical Content Knowledge. They listed the sources as professional development programs, teaching experiences and lastly teachers' own learning experiences. During their days as students in teacher education programs, teachers are assisted in variety ways to gain Pedagogical Content Knowledge. For examples, during practice, they learn how to put the pedagogical skills they learnt.
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