The purpose of this research: 1) analyze the validity; 2) the effectivity of the contextual-based physics learning module on the subject of global warming for high school students. This research is research and development (R&D). The development model used refers to the Nieeven (2006) model which includes 3 stages, namely 1) preliminary research, 2) prototyping stage, 3) assessment stage. Data collection techniques used are interviews and literature study. The data analysis used is expert validation and practicality data analysis. Practical data analysis using quantitative descriptive. This data analysis technique is used to process the data obtained through a questionnaire in the form of a descriptive percentage. The percentage of data obtained from the lecturer's response questionnaire was calculated based on the Guttman scale. The results showed that: 1) expert validity was 3.77 with very valid criteria and with a reliability coefficient of 95%. While user validation shows very valid criteria with user validity  results of 3.78 and with a reliability coefficient of 100%. Thus, this contextual-based physics module can be used as teaching material on global warming material. 2) The effectiveness of the calculated pretest and posttest results obtained an N-gain score of 0.79 which is included in the high category. So, the contextual-based physics learning module on the subject of global warming that was developed has effective criteria in improving student learning outcomes at SMAN 2 Jember, so it is suitable to be used as physics.

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ABSTRAKPrestasi siswa dalam pelajaran fisika rendah, hal ini disebabkan oleh rendahnya aktivitas dan kesiapan belajar. Aktivitas dan kesiapan belajar dipengaruhi oleh faktor internal dan eksternal seperti  minat dan motivasi,  penelitian ini bertujuan untuk mengetahui pengaruh minat belajar dan motivasi belajar terhadap aktivitas dan kesiapan belajar. Penelitian ini merupakan jenis penelitian kuantitatif, dengan desain penelitian kausal konfirmatori yang bertujuan untuk menguji hipotesis sebab akibat. Penelitian dilaksanakan di SMAN 1 Sukomoro dengan polulasi seluruh siswa kelas X, XI dan XII IPA sebanyak 327 siswa, dengan jumlah sampel 179 siswa. Pengambilan sampel menggunakan rumus slovin dengan dengan tingkat keakuratan 95% dan batas toleransi 5%, instrumen yang digunakan berupa angket dengan skala likert. Analisis yang digunakan adalah analisis deskriptif dan analisis SEM. Hasil analisis deskiptif menunjukan bahwa minat belajar, motivasi belajar, aktivitas belajar dan kesiapan belajar siswa berada pada kategori sedang. Hasil analisis SEM menunjukkan minat belajar berpengaruh signifikan terhadap aktivitas belajar, minat belajar berpengaruh signifikan terhadap kesiapan belajar, motivasi belajar berpengaruh signifikan terhadap aktivitas belajar, motivasi belajar berpengaruh signifikan terhadap kesiapan belajar. Kata kunci: aktivitas belajar; kesiapan belajar; minat belajar; motivasi belajar ABSTRACTStudent achievement in physics lessons is low, this is due to low activity and learning readiness. Activities and learning readiness are influenced by internal and external factors such as interest and motivation. This study aims to determine the effect of learning interest and learning motivation on activities and learning readiness. This research is a type of quantitative research, with a confirmatory causal research design that aims to test the causal hypothesis. The research was conducted at SMAN 1 Sukomoro with a total population of 327 students of class X, XI and XII IPA, with a total sample of 179 students. Sampling using the Slovin formula with an accuracy level of 95% and a tolerance limit of 5%, the instrument used was a questionnaire with a Likert scale. The analysis used is descriptive analysis and SEM analysis. The results of descriptive analysis show that interest in learning, learning motivation, learning activities and student readiness are in the medium category. SEM analysis results show that learning interest has a significant effect on learning activities, learning interest has a significant effect on learning readiness, learning motivation has a significant effect on learning activities, learning motivation has a significant effect on learning readiness. Keywords: learning activities; learning readiness; interest in learning; learning motivation

This study aimed to analyze the fermentation process of Civet Coffee through Extremely Low Frequency (ELF) magnetic field radiation. The research method used a Completely Randomized Design (CRD) experimental. The sample of high quality pulped coffee that fermented by adding α- amylase and is grouped in seven. The six groups are exposed by ELF magnetic field in 100 μT and 300μT for 15 minutes, 30 minutes, and 45 minutes, and one group is served as the control. The result indicated that the population of Lactobacillus in the experiment groups increases significantly compared to the control. The exposed sample achieves the highest population in 300 μT intensity for 45 minutes. Also, the total of pH during the fermentation process did not show any significant changes. ELF magnetic field exposure in 300 μT optimized Lactobacillus proliferation drastically in the fermentation process of artificial Civet coffee. This research can contribute to developing fermentation technology based on ELF magnetic field radiation as well as improving the quality of artificial Civet coffee.

In environmental learning, declarative and procedural knowledge is needed to to improve understanding of concepts and problem solving. The text used in KTT contains descriptions and arguments to understand declarative and procedural knowledge. This study aimed to investigate the effect of applying knowledgetransforming text (KTT) on declarative, procedural knowledge, and students' presentation skill as well as their motivation towards learning with KTT applied in environmental education material. The study applied control group design. Prior to treatment, homogeneity tests were carried out with one way ANOVA test. Furthermore, in the experimental class instructional strategy armed with KTT was in place, the result of which was then analyzed by several quantitative analyses. These analyses included (1) normality test with a non-parametric one-sample Kolmogorov-Smirnov Test; (2) Mann-Whitney U test non-parametric statistic to compares the means between unrelated groups on some continous, and (3) significance tests. The results showed that KTT posed significant effect on declarative and procedural knowledge yet it insignificantly affected student presentation skills. The significant effects of KTT learning on declarative and procedural knowledge was supported by content space, rhetorical space, and corrective elements in KTT. Quantitaive descriptive analysis was carried out by interpreting the percentage of student motivation as investigated by questionnaires on KTT learning. Students were relatively motivated towards KTT and hoped to learn to use KTT.