This article presents the school resilience profile for seven high schools in Makassar, Indonesia and explains the relationship between school resilience and bullying behavior at the schools. Confirmatory factor analysis (CFA) was conducted to assess the status of school resilience, the dynamics of the bullying phenomenon in the schools, and the relationship between school resilience and bullying. The data were obtained using a structured questionnaire administered to 490 high school students (Grade 11, aged 15-17). The results of the analysis suggest that the six main aspects of school resilience have been implemented in the studied high schools. Further, the results indicate that increasing school resilience could reduce the occurrence of bullying cases. The measures the schools have implemented to improve school resilience are expected to continue to lower the occurrence of bullying cases. The results of this study provide valuable data for the development of effective school resilience-based anti-bullying policies.
Corrosion or rusting is very common in metals is a decrease in the ability of a metal due to the environment or chemicals. Sea water is a corrosive environment for metals because it contains sodium chloride (NaCl), calcium sulfate (CaSO4), calcium carbonate (CaCO3), and dissolved oxygen (O2) which affect the corrosion process of the material. The presence of dissolved oxygen will cause the rate of corrosion in metals to increase with increasing oxygen content (O2), the solubility of oxygen in water is a function of pressure, temperature and chloride content. The process of corrosion is almost the same for all materials, especially in metals occurs slowly but surely, corrosion can cause a material to have a limited service life, where the material expected to be used for a long time turns out to have a shorter life span than the average usage life.
This research has the purpose to know the student’s achievement in Acid-Base topic by implementing Project Based Learning model. The population of this research are all Senior High School students grade XI in Berastagi , which the samples are 2 classes XIth grade chosen by purposive sampling. 1st as experiment class was taught by Project Based Learning Model while 2nd class as control class was taught by Conventional model. The instrument test had been standardized by expert validator and empiric validity process. The result of test standardization is 20 multiple choice questions with reliability 0.865 . The research resulted that the data is normal distributed and samples are homogenous. The result data showed that student’s achievement taught by Project based learning with lesson study gave higher significance different compared with student’s achievement taught by conventional model. The statement supported by the result of hypothesis testing is t count (5.78) > t table (1.67).
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