OSILATOR PEGAS SEBAGAI PERANGKAT CASE BASED LEARNING (CBL) UNTUK MENINGKATKAN HASIL BELAJAR SISWA

Pembelajaran fisika adalah proses menciptakan kondisi dan peluang agar siswa dapat mengkontruksi pengetahuan, sikap dan keterampilan proses yang membutuhkan sarana untuk mencapai tujuan pembelajaran. Berdasarkan hasil analisis kebutuhan 62,6 % siswa belum pernah melakukan praktikum osilator pegas, maka perlu dikembangkan alat praktikum osilator pegas sebagai media dalam pembelajaran fisika. Tujuan dari penelitian ini adalah untuk mengembangkan dan mengetahui kelayakan alat praktikum osilator pegas serta meningkatkan hasil belajar siswa. Penelitian dilaksanakan di SMAN 1 Indramayu dan SMAN 2 Indramayu pada bulan juli-agustus 2019. Metode penelitian yang digunakan adalah metode research & development. Alat yang dikembangkan menggunakan sensor jarak laser tipe VL53lX sebagai pengukur jarak, vibrator yang terbuat dari koil sebagai pengetar system pegas dan LCD dan laptop untuk menampilkan hasil percobaan. Sistem kontrol menggunakan arduino nano. Alat praktikum ini dapat digunakan untuk menentukan nilai konstanta pegas, menentukan nilai frekuensi alamiah sistem pegas dan menentukan besar amplitude dan periode berdasarkan grafik akibat gaya luar. Hasil uji coba konstanta pegas mendapat nilai rata-rata sebesar 6,527 N/m, nilai ratarata frekuensi alami system sebesar 1,672 Hz dan nilai amplitudo maksimum 4,8 cm dan periode 0,59 s. Hasil validasi ahli dari ahli media, ahli materi dan ahli pembelajaran secara berturut-turut adalah 85,16%; 90,04%; dan 86,90%. Hasil N-gain uji coba lapangan sebesar 0,688 dan 0,680. Dari hasil disimpulkan bahwa alat praktikum osilator pegas yang dikembangkan layak digunakan sebagai media pembelajaran dan dapat meningkatkan hasil belajar siswa. *********** Physics learning is the process of creating conditions and opportunities so students can construct knowledge, attitudes and process skills that require learning objectives. The results of need assessment were 62.6% of students have never done a spring oscillator practicum, it is necessary to develop a spring oscillator practicum as a tools in learning physics. The purpose of this research is to develop and find out the feasibility of a spring oscillator practicum and to improve students' learning outcomes. The study was conducted at SMAN 1 Indramayu and SMAN 2 Indramayu in July-August 2019. The research method was the research & development method. The instrument was developed using a laser distance sensor type VL53l0X as a distance gauge and a vibrator made from a coil as a spring. Result of the practicum will be displayed on the LCD and laptop LCD and a laptop. The control system uses arduino nano. This practicum tool can be used to determine the spring constant value, determine the natural frequency value of the spring system and determine the amplitude and period based on a graph due to external forces. The spring constant test results obtained an average value of 6.527 N / m, an average value of the natural frequency of the system of 1.672 Hz and a maximum amplitude value of 4.8 cm and a period of 0.59 s. The results of the validation of experts from media experts, material experts and learning experts respectively were 85.16%; 90.04%; and 86.90%. The results of N-gain field trials are 0.688 and 0.680. From the conclusion that the spring oscillator's practicum tool was developed worthy of use as a learning medium and can improve student learning outcomes

APPLICATION OF DISCOVERY LEARNING MODELS TO LIGHT MATERIALS TO IMPROVE STUDENT LEARNING OUTCOMES

This study aims to describe the results of the application of the discovery learning model on the subject matter of light in class VIIIC students of SMP Negeri 8 Kupang even semester of the 2019/2020 academic year. This research is descriptive. This research was conducted at SMP Negeri 8 Kupang for the 2019/2020 school year. The subjects in this study were researchers and 22 students of class VIIIC at SMP Negeri 8 Kupang, even semester, 2019/2020 academic year. The techniques used to collect data in this study are observation and tests. Based on the results of the descriptive analysis of the research data, it shows that in general, the application of the discovery learning model for the subject matter of light for students is optimal. In detail, the researcher's ability to manage to learn is obtained which includes: planning, implementing, and evaluating learning, including in the good category. The learning outcomes test (THB) of students for cognitive learning outcomes tests on learning implementation activities which include: preliminary activities, core activities, closing activities, time allocation, and class atmosphere are all in the very high category and cognitive achievement for each lesson plan is all complete

Pengembangan Tes IPA Dua Tingkat Berbasis Permainan Jumanji Untuk Mengukur Pemahaman Konsep

This study aims to develop a two-level Natural Science (IPA) test instrument based on the jumanji game in measuring understanding of the concept of work and simple planes. The research method in this case is a quantitative method with a modification of the development model. The measurement instrument developed in this study is a two-level science test or a reasoned multiple choice test specifically for the business chapter and simple planes. This research instrument that has been developed was tested on 256 students of SMP Abu Bakar. The results of this study indicate that a measurement instrument has been produced in the form of a two-level science test based on the jumanji game which can measure students' understanding of concepts about business and simple and reliable machines that are valid and reliable. These results are evidenced by the validity and reliability of the two-level science test, which are 0.83 and 0.53 respectively. Meanwhile, the achievement of students' understanding of concepts related to business and simple machines is 51% which is in the high category. The students' conceptual understanding measured using the two-level science test is high because it exceeds the minimum criteria that have been determined.This study aims to develop a two-level Natural Science (IPA) test instrument based on the jumanji game in measuring understanding of the concept of work and simple planes. The research method in this case is a quantitative method with a modification of the development model. The measurement instrument developed in this study is a two-level science test or a reasoned multiple choice test specifically for the business chapter and simple planes. This research instrument that has been developed was tested on 256 students of SMP Abu Bakar. The results of this study indicate that a measurement instrument has been produced in the form of a two-level science test based on the jumanji game which can measure students' understanding of concepts about business and simple and reliable machines that are valid and reliable. These results are evidenced by the validity and reliability of the two-level science test, which are 0.83 and 0.53 respectively. Meanwhile, the achievement of students' understanding of concepts related to business and simple machines is 51% which is in the high category. The students' conceptual understanding measured using the two-level science test is high because it exceeds the minimum criteria that have been determined

Penilaian Formatif Berbasis Quizizz Pada Mata Kuliah Fisika Dasar Pada Masa Covid-19

Penelitian ini dilaksanakan di Universitas Musamus, Merauke. Subjek penelitiannya adalah mahasiswa yang mengambil mata kuliah fisika dasar pada tahun akademik 20192 yang berjumlah 39 orang. Metode penelitian yang digunakan adalah metode analisis deskriptif kuantitatif, yaitu mendeskripsikan hasil penilaian formatif berbasis Quiziz yang diperoleh mahasiswa pada materi fisika dasar khususnya Hukum Newton dan Penerapannya. Tujuan penelitiannya adalah mendeskripsikan hasil penilaian formatif berbasis Quizizz pada mata kuliah fisika dasar pada masa Covid-19 Instrumen yang digunakan adalah soal pilihan ganda dengan 5 pilihan jawaban yang berjumlah 12 nomor. Validitas instrumen penelitian menggunakan product momen dan reliabilitasnya menggunakan KR-20. hasil analisis data menunjukkan rata-rata kemampuan mahasiswa pada 4 indikator materi hukum Newton dan Penerapannya diketahui bahwa indikator 1 yang diwakili oleh 3 nomor soal memiliki rata-rata persentase 68,67%. Indikator 2 yang diwakili 3 butir soal mencapai rata-rata persentase 70,67%. Indikator 3 yang diwakili 3 butir soal memperoleh presentase 77,33%. Indikator 4 yang diwakili 3 butir soal mencapai persentase 69,33%. Secara keseluruhan indikator dengan rata-rata skor tertinggi adalah indikator 3 dengan rata-rata 77,33% dan indikator dengan skor terendah adalah indikator 1 dengan rata-rata skor 68,67%. Rata-rata skor yang diperoleh pada 4 indikator tersebut adalah 71,5% sehingga berada pada kategori bai

Efektivitas Penggunaan Alat Praktikum Osilator Pegas Untuk Meningkatkan Hasil Belajar Kognitif Siswa

This study aims to describe the effectiveness of the use of a spring oscillator practicum on students of SMA Negeri 1 Indramayu and SMA Negeri 2 Indramayu. The method used is the ADDIE model R & D method using a one group pretest-posttest design. The results showed that the calculation of the n-gain score of 0.688 and 0.680 obtained the interpretation of increasing student learning outcomes in the medium category. Meanwhile, students' responses to the spring oscillator practicum tool obtained an average score of 82.3% from the three aspects with the interpretation of the score "good". From the research data, it can be concluded that the use of a spring oscillator is effective in high school physics learning &nbsp

Pengaruh Paparan Radiasi Gamma dan Pemberian Ekstrak Kulit Manggis (Garcinia Mangostana) terhadap Kadar SGPT Organ Hepar Mencit (Mus Musculus)

Penelitian ini mengkaji pengaruh penggunaan radiasi gamma di bidang kesehatan, salah satunya adalah penggunaan sinar gamma dalam proses radioterapi. Penyerapan energi radiasi ke dalam tubuh dapat menyebabkan munculnya radikal bebas dalam tubuh yang dapat merugikan organ lain di sekitar target penyinaran. Penelitian ini bertujuan untuk mengetahui pengaruh paparan radiasi gamma terhadap hepar mencit dan sifat hepatoprotektif ekstrak kulit manggis(Garcinia mangostana) dalam mengurangi kerusakan sel yang ditimbulkan. Penelitian ini dilakukan dengan memberikan ekstrak kulit manggis 5 dosis varian berbeda ke mencit dan diberi paparan radiasi selama 40 menit dengan dosis total 268 μSv selama 14 hari, kemudian diukur kadar SGPT (serum glutamic pyruvic transaminase) dan jumlah kerusakan sel dari preparathistopatologis. Hasil penelitian menunjukkan kadar SGPT turun menjadi 77,7 U/L dari kadar awal 128,67 U/L. Hal ini membuktikan bahwa ekstrak kulit manggis memiliki sifat hepatoprotektif yang dapat mengurangi kerusakan sel akibat paparan radiasi gamma