Aziz, Faishal, Sri Haryani, and Sri Susilogati Sumarti. 2020. “Analysis of Pedagogical Content Knowledge (PCK) Topic Specific PCK Model for Chemistry Teachers at the Vocational School of Semarang in Stoichiometry”. Journal of Innovative Science Education 9 (2), 159 -66. https://doi.org/10.15294/jise.v8i3.33773.