Pengaruh Model Pembelajaran Process Oriented Guided Inquiry Learning Terhadap Keterampilan Proses Sains Dan Kemampuan Kognitif Siswa Pada Mata Pelajaran Fisika

The study in this paper is based on the results of literature study, journals and research findings on proces oriented guided inquiry learning (POGIL) that focus on the implementation of POGIL and the influence of POGIL in building science process skills and student cognitive abilities. From the results of the study, it was found that POGIL could improve science process skills, thinking skills, train problem solving skills, enhance the mastery of subject matters, and improve student cognitive abilities. POGIL consists of five phases: 1) orientation, 2) exploration, 3) concept formation, 4) applications and 5) closure. Orientation, at this stage, students are directed to focus on one particular topic, also facilitates students to make observations as initial activities to explore. Exploration and concept formation, the students are guided to find concept. As a result of the exploration, concepts are formed, introduced, or students prove the concept that has been discovered by experts. Application involves using the new knowledge in exercises, problems, and even research situations. Each activity ends with a class discussion to validate the results of student performance

Penerapan Model Pembelajaran Pembangkit Argumen Menggunakan Metode Saintifik Untuk Meningkatkan Kemampuan Kognitif Dan Keterampilan Berargumentasi Siswa

The purposes of this study were to determine the difference between the generate-an-argument instructional model using scientific method and without scientific method in improving student\u27s cognitive abilities and argumentation skills, and to determine the correlation between the argumentation skills and the cognitive abilities in the generate-an-argument instructional model using scientific method class. The study was conducted using a quasi-experimental with randomized control group pretest-posttest design. The population were all of students in X MIA grades on one of the senior high schools in Pemalang district. There were two samples that chosen at random cluster sampling. The results showed that there was an improving of student\u27s cognitive abilities and argumentation skills in two classes. But, in the experiment\u27s class there was more significantly improvement student\u27s cognitive abilities and argumentation skills than in control class. In addition, there was a strong and significant correlation between argumentation skills and cognitive abilities of students having lesson implementing the generate-an-argument instructional model using scientific method

Correlation of Oxidized-LDL, Resistin and Interleukin-1 Beta in Centrally Obese Men

BACKGROUND: Obesity is one of serious health problems, which increases the risks of cardiovascular disease, type 2 diabetes mellitus, and cancers. It is strongly associated with changes in the physiological function of adipose tissue, leading to altered secretion of adipokines and activation of inflammatory signaling pathways. This study was aimed to investigate the correlation of resistin, interleukin-1 beta (IL-1β), and oxidized low-density lipoprotein (OxLDL) in centrally obese men.METHODS: The research was conducted with a crosssectional design involving 68 centrally obese men aged 31 to 60 years old, with waist circumference (WC) >90 cm. All subjects fulfilled the exclusion criteria. Anthropometric parameters, creatinine, estimated glomerular filtration rate (eGFR), serum glutamic oxaloacetic transaminase (SGOT), serum glutamic-pyruvic transaminase (SGPT), and high sensitivity C-reactive protein (hs-CRP) were measured. Serum concentrations of resistin, IL-1β and OxLDL were measured by enzyme-linked immunosorbent assay.RESULTS: The study results showed there was a significant correlation of WC-OxLDL (r=0.235; p=0.030) and some correlation of WC-resistin (r=0.201; p=0.050). However, we observed no significant correlation of IL-1β-OxLDL (r=0.042; p=0.369), resistin-OxLDL (r=-0.072; p=0.285) and WC-IL-1β (r=-0.042; p= 0.367).CONCLUSION: Our data show a relationship between WC and OxLDL, but the mechanism does not appear to be directly related to resistin or IL-1β

PENERAPAN MODEL PEMBELAJARAN PEMBANGKIT ARGUMEN MENGGUNAKAN METODE SAINTIFIK UNTUK MENINGKATKAN KEMAMPUAN KOGNITIF DAN KETERAMPILAN BERARGUMENTASI SISWA

Penelitian ini dilakukan untuk memperoleh gambaran tentang perbedaan peningkatan kemampuan kognitif dan keterampilan berargumentasi siswa yang mendapatkan pembelajaran fisika dengan model pembangkit argumen menggunakan metode saintifik dan tanpa menggunakan metode saintifik, serta memperoleh gambaran mengenai hubungan antara keterampilan berargumentasi dengan kemampuan kognitif siswa yang mendapat pembelajaran dengan model pembangkit argumen menggunakan metode saintifik. Penelitian dilakukan menggunakan metode eksperimen semu dengan desain randomized control group pretest–posttest design. Populasinya adalah seluruh siswa kelas X MIA pada salah satu SMA Negeri di Kabupaten Pemalang. Sampel sebanyak dua kelas yang dipilih secara cluster random sampling. Hasil penelitian menunjukan bahwa terjadi peningkatan kemampuan kognitif dan keterampilan berargumentasi siswa di kedua kelas. Namun, besarnya peningkatan pada kelas eksperimen lebih signifikan dibanding kelas kontrol. Selain itu, terdapat hubungan yang kuat dan signifikan antara keterampilan berargumentasi dengan kemampuan kognitif siswa yang mendapat pembelajaran dengan model pembangkit argumen menggunakan metode saintifik.ABSTRACTThe purposes of this study were to determine the difference between the generate-an-argument instructional model using scientific method and without scientific method in improving student’s cognitive abilities and argumentation skills, and to determine the correlation between the argumentation skills and the cognitive abilities in the generate-an-argument instructional model using scientific method class. The study was conducted using a quasi-experimental with randomized control group pretest-posttest design. The population were all of students in X MIA grades on one of the senior high schools in Pemalang district. There were two samples that chosen at random cluster sampling. The results showed that there was an improving of student’s cognitive abilities and argumentation skills in two classes. But, in the experiment’s class there was more significantly improvement student’s cognitive abilities and argumentation skills than in control class. In addition, there was a strong and significant correlation between argumentation skills and cognitive abilities of students having lesson implementing the generate-an-argument instructional model using scientific method.</p

Computer-Based Experiment of Free Fall Movement to Improve the Graphical Literacy

The purpose of this study is to develop computer-based experiment of free fall movement to improve the graphical literacy of the Physics Education students. This study employed quasi-experimental design, particularly the pre-test and post-test control group design. The sample was 58 students of the first semester of Physics Education study program. They were divided into two groups, namely 38 students constituted an experimental group and 20 students constituted the control group. Both groups joined learning activities at laboratory and classrooms with the same topic which is the free fall movement. Computer-based learning models were used to design learning activities for the experimental group, while the control group used a traditional learning model with manual experiment with stopwatch and never use experiment tool of free fall movement. It was indicated in this study that the use of such learning model improved the graphical literacy capability better than the traditional learning, which covered ability to identify experimental variables, using the experimental tools, making a graph, formulating mathematical equation, making predictions on the basis of the graph

Pengembangan Rencana Pelaksanaan Pembelajaran Menggunakan Taksonomi Pendidikan Sains pada Materi Elastisita

Latar Belakang: Penelitian dan pengembangan RPP dilakukan di salah satu sekolah swasta di kabupaten Bandung, dengan subjek penelitian siswa kelas XI sebanyak 21 siswa. Tujuan: Penelitian pengembangan ini bertujuan untuk menghasilkan Rencana Pelaksanaan Pembelajaran (RPP) menggunakan Taksonomi Pendidikan Sains pada materi elastisitas. Metode: Metode penelitian ini menggunakan pendekatan model ADDIE yang memiliki lima langkah yaitu Analyze, Design, Develop, Implement, and Evaluate. Hasil: Penelitian dan pengembangan yang telah dilakukan menghasilkan Rencana Pelaksanaan Pembelajaran (RPP) menggunakan Taksonomi Pendidikan Sains pada materi elastisitas yang layak digunakan dan diimplementasikan

Association Between Cathepsin S, Cystatin C and High Sensitivity C-Reactive Protein (HsCRP) with Oxidized LDL (Ox-LDL) in Men with Central Obesity

BACKGROUND: Inflammation is a central feature of the atherosclerotic process particularly in obesity. hsCRP, a marker of inflammation, may be directly involved in all phases of atheroslerosis by complement activation, apoptosis, vascular cell activation, monocyte recruitment, lipid accumulation and thrombosis. Inflammation has a causal relationship with cysteine proteases including cathepsin S. Therefore, cathepsin S is considered as a molecular link between obesity and atherosclerosis. An imbalance between elastolytic cysteine proteases, cathepsin S and its inhibitor, cystatin C, is involved in the pathogenesis of atherosclerosis. Some studies have shown that increased circulating levels of cathepsin S, hsCRP and cystatin C in inflammatory conditions contribute to atherosclerosis. This study was conducted to investigate the associations between ox-LDL and cathepsin S, and cystatin C and hsCRP in men with central obesity.METHODS: This was a cross-sectional study involving 71 male subjects with central obesity (waist circumference ≥90 cm), with no renal dysfunction, aged 30-60 years.RESULTS: Cathepsin S did not have a significant correlation with ox-LDL (r=0.158, p=0.096). ox-LDL had positive correlation with cystatin C (r=0.156; p=0.029) and hsCRP (r=0.204; p=0.045), and cathepsin S/cystatin C ratios (r=0.360; p=0.024) at level >91 U/L (median ox-LDL).CONCLUSIONS: There were associations between ox-LDL and cystatin C, hsCRP and cathepsin S/cystatin C ratios in men with central obesity