This study aims to examine the effectiveness of science learning which applied Contextual Teaching and Learning (CTL) to improve the critical thinking skills of elementary school students on the topic of balance and preservation of natural resources. This research is a part of a development study with the main focus on the analysis of the effectiveness of learning aids using one group pre-test post-test. The study was conducted at SD Al Muslim, one of the primary schools (SD) in East Java, with a total sample of 80 students divided into three classes. Before the learning with CTL approach was carried out, students were given pre-test of Critical Thinking Skills (KPS) and after learning, students were again given the same KPS test as the final test (post-test). Data in the form of KPS skills, activities, and student responses were respectively collected using KPS test instrument, student activity observation sheet, and student response question. The collected data were then analyzed using a paired t-test, ANOVA, and descriptive analysis. Research has shown that CTL-based science learning is effective in improving students' critical thinking skills.
The existence of the Information Commission as mandated by Law Number 14 of 2008 concerning Public Information Disclosure provides an opportunity for the entire community to be able to access public information from public agencies/institutions. Unfortunately, there are still many parties who have not understand regarding the disclosure of this information so that information disputes arise. It is in this context that the Information Commission plays a role in bridging the resolution of the information conflict, either through mediation or non-litigation adjudication. This study raises the case of mediation of information disputes handled by the South Kalimantan Provincial Information Commission in the 2014-2018 period. This research seeks to answer how the communication model applied by the Information Commission of South Kalimantan Province and how the strategy was carried out in the mediation session. For this reason, this study uses the theory of relationship communication or personal communication, mediation, with qualitative methods and then uses an interpretive paradigm. As for data collection techniques through observation and interviews with informants. The results show that the model used by the South Kalimantan Provincial Information Commission is: 1) Psychological and Cultural Communication; 2) Two Way Communication and Separate Communication; and 3) Communication of Information is Human Rights
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