The research conducted in the even semester of the 2021/2022 academic year aims to see how the influence of different learning strategies on the learning results of eighth-grade students of State Junior High School 4 Medan on vibration and wave material. This study used true experimental research with a pretest posttest control group design. The population used in this study was class VIII of State Junior High School 4 Medan as a whole consisting of 346 people. The sample of this study was class VIII-2 as the experimental class and VIII-3 as the control class selected using the cluster random sampling technique. To find out student learning results, multiple-choice questions with a total of 20 items have been previously tested for validity, reliability, difficulty, and discrimination. The learning results of the two classes were tested for normality with the Lilliefors test and the homogeneity test using the F test. Then a one-sided t-test was carried out for = 0.05, obtained tcount = 2.07 > ttable = 1.6697. As for the regression test obtained = 15.79 + 0.78X. Based on the results of the study, it can be concluded that there is an influence of differentiation learning strategies on the learning results of grade VIII students of State Junior High School 4 Medan.
Adapun tujuan dari penelitian ini adalah untuk mengetahui pengaruh strategi pembelajaran berdiferensiasi terhadap hasil belajar siswa di SMP N 2 Manduamas. Metode penelitian yang digunakan yaitu metode eskperimen yang diterapkan kepada peserta didik yang menjadi subjek dalam penelitian ini. Subjek dalam penelitian ini adalah kelas VIII SMP N 2 Manduamas yang berjumlah 60 orang yaitu kelas VIIIA sebagai kelas eksperimen dan kelas VIIIB sebagai kelas kontrol. Untuk mengetahui hasil belajar peserta didik digunakan instrumen berbentuk tes pilihan ganda yang berjumlah 20 soal. Sebelum diberikan perlakuan kepada kedua kelas, hasil rata-rata skor pretest eksperimen 38,67 dan untuk hasil pretest kelas kontrol 34,50. Setelah diberikan perlakuan dengan strategi pembelajaran yang berbeda maka diperoleh hasil rata-rata skor posttest kelas eksperimen 65,67 dan untuk posttest kelas kontrol 58,33. Hasil uji prasyarat data pretest dan posttest menyatakan bahwa sampel berdistribusi normal dan homogen yang telah diuji dengan uji Liliefors menggunakan SPSS. Pengujian hipotesis menggunakan uji t satu pihak berbantuan SPSS. Hasil perhitungan yang diperoleh bahwa signifikansi t < 0,05 adalah (0,032 < 0,05). Berdasarkan hasil analisis yang telah didapatkan maka diperoleh analisis regresi linearnya yaitu Y = 22,494 + 0,655X. Persentase peningkatan hasil belajar peserta didik sebesar 12,58%. Dari hasil perhitungan tersebut dapat disimpulkan bahwa penggunaan strategi pembelajaran berdiferensiasi berpengaruh terhadap hasil belajar peserta didik kelas VIII SMP N 2 Manduamas.
Implementing online learning in a higher education environment requires an analysis of learning outcomes and their impact on students, lecturers, and the institutions that administer the learning. The implementation of online learning shows that the learning process takes place and the readiness of lecturers and students to implement online learning. The impact given by online learning is in the form of GPA and student perceptions of the learning process they experience. Based on the research results, various findings were obtained, including that mastery of online learning LMS was not optimal, learning outcomes in the form of GPA were relatively high, students' perceptions of online learning were still low, especially in terms of lecturer readiness and students' confidence in their competence after participating in learning.
This research finds from need analysis that covers students background, goal, necessities, lacks, wants and learning needs, a new design of English writing materials is vitally needed. The developed writing materials are validated by two experts; teacher and lecturer. Teacher scored 87.3 and lecturer scored 79.3. This score of validation means the English writing material developed by scientific approach are suitable for learning process for early post covid pandemic.
Supercapacitors can be called electrostatic double-layer capacitors (EDLCs) or pseudo-capacitors based on their energy storage mechanism. Pseudo-capacitors with metal oxide electrodes that transmit electric charge offer great application power but low stability. This study aims to characterize trisodium citrate (TSC) modified NiCo2O4/rGO electrodes as a preliminary study for the NiCo2O4 nanoparticle pseudo-capacitor. The materials were characterized using SEM (Scanning Electron Microscopy), XRD (X-Ray Diffractometer), FT-Raman (Fourier Transform Raman Spectroscopy), and FTIR (Fourier Transform Infrared Spectroscopy). All of these analyses confirmed that NiCo2O4 was manufactured successfully using TSC. At XRD, the angles of 2????, namely 45.04 and 53.34°, matched the plane of the cubic phase nanorod crystals of NiCo2O4 with values of 400 and 511, respectively. In the Raman examination, the presence of rGO, which increased the crystallinity of NiCo2O4 nanoparticles, was confirmed. FTIR analysis indicated that the 1550-1600 cm−1 corresponds to a C=C functional group in an aromatic ring or a C=O ????-???? structure, and the wavenumber of 2300 cm−1 corresponds to the OH group in TSC, an alkanoate derivative. SEM analysis determined that NiCo2O4 nanoparticles with 1 mmol TSC are the ideal material for supercapacitor electrodes, as the structure is the most uniform, soft, and tidy. Further analysis is needed to confirm the stability of the modified material.
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