This study analyzes the research trends of PCK (Pedagogical Content Knowledge) in Korean English classes from 2005 to 2019 across ten journal articles, two master’s theses, two doctoral dissertations, and five research reports. This was intended to provide hints for the future direction of English PCK studies. Six criteria—subject-matter knowledge, pedagogical knowledge, learner knowledge, curriculum knowledge, social context knowledge, and action research knowledge— have been applied to the analysis of the selected English PCK studies. The findings are as follows. Study on the subject-matter knowledge was the most frequent, appearing in 15 studies, mainly dealing with linguistic knowledge. In the field of pedagogical knowledge, studies on class design were most common, and in the field of learner knowledge, learner background and learner characteristics were equally studied. In the social context knowledge field, there were relatively few studies on parents, and in the field of action research knowledge, the number of studies corresponding to three sub-factors was the same. Our study concludes that to systematize the study of PCK for teacher professionalism in the subject matter of English, English PCK education should be done in both pre-service and in-service institutions and that PCK research environments should be provided to this end.

The purpose of this research is to investigate characteristics of science content knowledge and pedagogical content knowledge shown in the primary school science classes. Through analysis of classroom teaching, explore the features and differences between primary and secondary school science PCK. Using open-ended interviews with the teachers and group discussions on a regular basis to analyze and compare classes of five primary school teachers, the relationship between CK and PCK. Regardless of the school level the teacher's PCK and professionalism is required with varying focus and emphasis. The features of the primary school teacher's PCK are as follows: Firstly, elementary teach secondary teach content, teachers value pedagogical knowledge (PK) content knowledge (CK). The primary school PCK requires more of understanding of students and teaching methods that to subject areas. PCK be without content knowledge, and the teacher's PCK is subject-specific In addition to the characteristics of PCK in the primary school science teaching, ways to set up professional exchange or collaboration between primary and secondary teachers, and to provide supplementary in-service training focused on content knowledge for primary school teachers.

This study investigated the effects of the Mercedes Model with Embedded Assessment Strategy, subject specialisation and gender on students’ knowledge of selected biology concepts. A pretest post-test control group quasi-experimental research design was adopted for the study. The sample consisted of 666 Senior Secondary Class II biology students from six senior secondary schools randomly selected from two purposively selected Education Districts (EDs) in Lagos State. The two EDs were randomly assigned to treatment such that one was the experimental group and the other the control group. Seven null hypotheses were formulated to guide the study. Also, five instruments were used to generate data for the study, namely, the Mercedes Model with Embedded Assessment Strategy in Diffusion (MEASID), Mercedes Model with Embedded Assessment Strategy in Osmosis (MEASIO). Conventional Lesson Plan on Diffusion (COLPOD), Conventional Lesson Plan on Osmosis (COLPO) and Test on Students’ Learning Outcomes in Osmosis and Diffusion (TESLOOD). Data collected were analysed using mean, standard deviation, analysis of covariance (ANCOVA) and multiple classification analysis. The study has shown that the use of the Mercedes Model with Embedded Assessment Strategy has positively improved students’ knowledge of selected biology concepts. Further, the biology students in the science class were better than the non-science group at imbibing the knowledge of biology concepts. In the same vein, the males performed better than their female counterparts in knowledge. It was recommended, among other things, that teachers of biology adopt the Mercedes Model with Embedded Assessment Strategy in the teaching of students in secondary school.

최근 교육계에서는 학습자의 고차원적인 능력인 사고력과 창의력의 신장을 위 한 평가 방법을 중시하고 있다. 기존의 4지, 5지 선다형의 문항이 지닌 단순한 평 가 방식에서 벗어나 학습자의 생각을 다양하게 표현할 수 있는 평가 방식으로의 변화를 꾀하고 있다. 이러한 시대적 흐름에 적합한 평가 방법이 서술형 평가이다. 한문과는 한문의 독해와 올바른 가치관 함양을 교육과정의 주로 삼고 있으므로, 서술형 평가에 의한 평가방법은 교과타당도를 높이는 방법이 될 것이다. 한문지식 서술형 평가는 한문지식의 내용영역을 대상으로 하며 고등 사고능력 과 표현력을 측정할 수 있고 정답의 형식이 짧고 간단한 문장으로 답하는 유형이 다. 서술형 평가의 특성상 채점기준을 명확하게 해야 하며, 교사의 수업 방식도 이에 맞도록 다양하게 재구성되어야 한다. 한문과의 서술형 평가 문항은 이미 ‘국가수준 평가도구 개발’을 통해 일부 문항 이 개발되었으나, 현재의 개념과 다소 거리감이 있었다. 이에 한문지식 영역별 서 술형 문항을 기존의 문항에 대한 분석과 좁은 의미의 서술형 개념에 맞도록 8개 문항을 개발하여 현장에서 적용 가능하도록 하고자 하였다.

During the last three decades, earth science has been re-conceptualized as an interdisciplinary discipline entitled Earth System Science (ESS), which is based on knowledge of the physical earth system and human impact on the earth. While there is increasing effort to teach earth as a system in K-12 education, teachers' preparedness of to teach earth system is still in its infancy. This article focuses on reviewing the literature of teachers' knowledge of earth systems and of how teachers' knowledge of subject matter affects their teaching practice and pedagogical content knowledge (PCK). First, the study investigated a literature of PCK in general as well as in science teaching. Then this study duscuss what teachers' subject matter knowledge (SMK) is and what it means to be in teaching earth system science. Third, a literature of teachers' knowledge of earth system was reviewed. Finally, a number of suggestions and implications are made as to what teacher education program should do to better prepare future teachers to teach earth systems.