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PENINGKATAN NILAI CBR TANAH LIAT YANG DISTABILISASI DENGAN PENAMBAHAN LIMBAH SERBUK BESI Sabani, Sabani; Noor, Nasruddin M; Eddiyanto, Eddiyanto
JURNAL PENELITIAN SAINTIKA Vol 16, No 1 (2015): Maret 2015
Publisher : JURNAL PENELITIAN SAINTIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Telah dilakukan penelitian dengan memanfaatkan limbah serbuk besi yang ditambahkan pada bahan penstabil tanah (soil stabilizer) yang terdiri atas semen Portland tipe I, serbuk PVC dan serat polipropilena dengan tujuan untuk mengetahui besarnya peningkatan nilai CBR tanah liat. Pengujian yang dilakukan adalah pengujian sifat fisik tanah liat sebelum tanah distabilisasi dengan menambahkan limbah serbuk besi, yang terdiri dari pengujian batas Atterberg, berat jenis, permeabilitas tanah. Selanjutnya diuji sifat mekanik tanah yaitu dengan pemadatan tanah dan nilai CBR sebelum dan sesudah dicampur dengan menggunakan limbah serbuk besi. Dari hasil pengujian terhadap tanah liat diperoleh data indeks plastisitas (PI) sebesar 15,76% dengan batas plastis 36,57%, ini menunjukkan bahwa tanah ini merupakan tanah liat yang berjenis tanah lempung lanau. Untuk pengujian mekanik terjadi perubahan kadar air dari berat isi kering dengan nilai tertinggi 1,92 gr/cm3 pada campuran limbah serbuk besi sebesar 1%. Untuk nilai CBR juga terjadi perubahan dari tanah liat sebelum distabilisasi dengan menambahkan limbah serbuk besi sebesar 66,35%Â menjadi 85,31% setelah distabilisasi dengan menambahkan limbah serbuk besi 1%.

Development of Test Instrument To Asses Critical Thinking Skills Using Moodle Sinurat, Tumpal leonardo hamonangan; Sabani, Sabani
IPER (Indonesian Physics Education Research) Vol 4, No 1 (2023): IPER (Indonesian Physics Education Research)
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/iper.v4i1.32676

This research aims to develop critical thinking based test instrument on Sound Material Using E-Learning, test the feasibility of the instrument and determine the level of students' critical thinking. The research was designed with the ADDIE Learning Design Model and was carried out at SMA Negeri 3 Medan with the subject of class XI students in the MIA program. The initial stages of this research are Analysis, the next stage is Design, then Develop stage by conducting product trials in small and large groups, and the last stage is Implement with evaluation at each step, the last stage is the distribution of instruments carried out within the scope of SMA Country 3 Medan. The results showed that the test instrument based on Critical Thinking Skills On Sound Material Using E-Learning the sound wave material developed by the researcher had met the criteria worthy of being used as a sound wave material learning outcome test instrument. The feasibility of this test instrument was based on validity and reliability tests, from validity test, from 20 questions obtained 7 valid questions. For the large group reliability test, the value of 0.72 is included in the feasible category. It can be concluded that the questions developed by researchers can be used as a measuring tool for students' cognitive knowledge and can be well received by students.

DEVELOPMENT OF HOTS-BASED TEST INSTRUMENTS TO MEASURE STUDENTS' CRITICAL THINKING SKILLS MAJOR MATERIALS AND UNIT Panuqih, Frisma Winda Afifah; Sabani, Sabani
IPER (Indonesian Physics Education Research) Vol 5, No 1 (2024): IPER (Indonesian Physics Education Research)
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/iper.v5i1.26962

This study aims to develop a HOTS-based test instrument in measuring students' critical thinking skills on the material of quantities and units at SMAN 2 Rambah Hilir which has met the criteria for testing the instrument's feasibility including content validity, item validity, reliability testing, level of difficulty, discriminating power, and student response test. This research is a research development or Research and Development (RnD) using the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. This research was conducted at SMA Negeri 2 Rambah Hilir with the research subjects of class X MIPA SMA Negeri 2 Rambah Hilir. Based on the data obtained from content validity with the Lawshe technique, 10 questions were obtained that could be used. Meanwhile , from testing the validity of the items , there are 8 valid questions and 2 invalid questions . In the reliability test obtained a value of 0.543390 with moderate correlation criteria. For the level of difficulty, scores ranged from 0.297 to 0.70 with the criteria that 1 item was said to be easy, 1 item was said to be difficult, and 8 items were said to be moderate . While different power derive a value of -1 , 8 - 2.5 with a category 2 a matter of saying ugly and the two problems said to be good at all. Meanwhile, to test students' response was obtained by 78 , 1 % in both categories. The conclusion from the overall test results is that the HOTS-based test instrument is feasible to use to measure critical thinking skills.Keywords : Development of Test Instruments, Critical Thinking Skills, Quantities and Units

Pengaruh Discovery Learning Berbantuan Simulasi PhET terhadap Minat dan Hasil Belajar Siswa SMPN 1 Siatas Barita pada Materi Getaran dan Gelombang Sihotang, Johan; Sabani, Sabani
Journal of Natural Sciences Vol 4, No 3 (2023): Journal of Natural Sciences November
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v4i3.428

This research aims to evaluate the impact of the Discovery Learning model using interactive PhET simulations on students' interest and learning outcomes at SMPN 1 Siatas Barita, particularly in the subject of Vibrations and Waves. PhET simulations incorporate animated and interactive elements, designed akin to games to facilitate exploratory learning for students. The research employed a Quasi-experimental method with a Non-Equivalent Control Group Design, where class VIII-1 served as the experimental group and class VIII-2 as the control group. The instruments utilized included learning tools, written tests, and questionnaires for data collection. Data analysis was conducted through hypothesis testing using Multivariate Analysis of Variance (MANOVA). The results revealed a significant influence of the Discovery Learning model assisted by PhET simulation on students' interest and learning outcomes in Vibrations and Waves at SMPN 1 Siatas Barita. Homogeneity analysis of the variance/covariance matrix indicated no variance matrix differences in the interest and learning outcomes of students between classes VIII-1 and VIII-2. The multivariate test results showed a low significance level, leading to the conclusion that the Discovery Learning model with PhET simulation assistance has a positive impact on students' interest and learning outcomes in the specified subject.

ANALISIS PROFIL PEMBELAJARAN ABAD 21 FISIKA MATERI FLUIDA DI MAN BINJAI Gani, Abdul Rafid Fakhrun; Sabani, Sabani; Azhar, Zul; Purba, Andre Agachi
JURNAL DARMA AGUNG Vol 30 No 3 (2022): DESEMBER
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Darma Agung (LPPM_UDA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46930/ojsuda.v32i2.5242

Penelitian ini bertujuan untuk menganalisis profil pembelajaran fisika abad ke-21 pada materi fluida di MAN Binjai. Penelitian ini menggunakan metode deskriptif kualitatif yaitu penelitian yang memberikan gambaran objektif mengenai suatu fenomena yang diteliti dan menyajikan gambaran menyeluruh dalam bentuk deskripsi kata-kata. Hasil wawancara guru menunjukan bahwa model, metode, pendekatan, dan media telah tergolong terhadap pembelajaran abad 21. Analisis respon siswa menunjukkan guru telah mengaplikasikan pembelajaran abad 21 dengan baik. Pembelajaran di MAN Binjai telah mengadopsi banyak aspek pembelajaran abad 21 dengan baik.

PENGEMBANGAN E-MODUL BERBASIS PROBLEM BASED LEARNING (PBL) PADA MATERI FLUIDA STATIS DI SMA SWASTA IMELDA MEDAN Lestari, Yuniar; Sabani, Sabani
INPAFI (Inovasi Pembelajaran Fisika) Vol. 13 No. 1 (2025): INPAFI
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/inpafi.v13i1.53372

Penelitian ini bertujuan untuk emngembangkan e-modul berbasis problem based learning pada materi fluida statis dan menganalisis e-modul dengan uji validitas, efektivitas dan respon. Jenis penelitian ini yang digunakan yaitu Research and Development (R&D) Borg And Gold berdasarkan modifikasi yang dikembangkan oleh Sugiyono. Teknik Pengumpulan data berupa angket validitas, respon siswa dan serta tes hasil belajar berupa pretest dan postes. Subjek penelitian ini meliputi dua dosen fisika sebagai validator, serta guru fisika sebagai validator dan peserta didik kelas XI SMA Swasta Imelda Medan. Hasil penelitian berupa tingkat validitas diperoleh persentase rata-rata 94% dengan kategori sangat valid, uji coba kelompok kecil 76% dan 64% pada uji coba kelompok besar. Sedangkan, tingkat respon siswa terhadap E-Modul diperoleh rata-rata 86% dengan kriteria sangat baik. E-modul berbasis Problem Based Learning pada materi Fluida Statis dinyatakan valid, cukup efektif dan sangat baik. Kata kunci : e-modul, problem based learning, fluida statis This research aims to develop an e-module based on problem based learning on static fluid material and analyze the e-module by testing validity, effectiveness and response. The type of research used is Research and Development (R&D) Borg And Gold based on modifications developed by Sugiyono. Data collection techniques include validity questionnaires, student responses and learning outcomes tests in the form of pretests and posttests. The subjects of this research included two physics lecturers as validators, as well as a physics teacher as validator and class XI students at Imelda Private High School Medan. The results of the research in the form of a validity level obtained an average percentage of 94% with a very valid category, 76% in small group trials and 64% in large group trials. Meanwhile, the student response rate to the E-Module was obtained on average 86% with very good criteria. The E-module based on Problem Based Learning on Static Fluid material was declared valid, quite effective and very good. Kata Kunci: e-modul, problem based learning, fluida statis

DEVELOPMENT OF STUDENT ASSESSMENT INSTRUMENTS BASED ON COGNITIVE ASPECT SCIENCE APPROACH TO PHYSICS LEARNING IN DYNAMIC FLUID MATERIALS Pane, Silfha Yanni; Sabani, Sabani
(IPER) Indonesian Physics Education Research Vol. 1 No. 1 (2020): IPER (Indonesian Physics Education Research)
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/iper.v1i1.14339

This study aims to determine the validity of the instrument and determine the level of effectiveness of the development of assessment instruments for learning outcomes of cognitive aspects based on scientific approaches to dynamic fluid material based on the assessment of experts, teachers and class XI students of SMA Negeri 1 Stabat. The type of research used is research and development (R&D) using the 4-D model. The subjects in this study were 2 expert lecturers, 1 physics teacher, 9 small group test students and 33 large group test students. The object of this study is the validity and effectiveness of the instrument. The results of the experts' assessment showed the Aiken V index of 0.95 (good validity). The results of the validity of a small group test, 15 valid questions, and effective questions. While the results of the validity of a large group test, 12 valid questions, and effective questions. Then the development of student learning outcomes assessment instruments based on a scientific approach to class XI dynamic fluid material gets decent criteria and excellent assessments based on the criteria of experts, teachers and students.Keywords: assessment instruments, learning outcomes, scientific approaches, dynamic fluids

DEVELOPMENT OF STUDENT LEARNING OUTCOMES TEST INSTRUMENTS OF 11th GRADE HIGH SCHOOL ON SOUND WAVE MATERIAL Ndruru, Ersano; Sabani, Sabani
(IPER) Indonesian Physics Education Research Vol. 2 No. 1 (2021): IPER (Indonesian Physics Education Research)
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/iper.v2i1.23500

Development of test instruments is the process of developing tools or procedures used in the framework of measurement and assessment activities. This study aims to develop well-qualified questions including validity, reliability, difficulty index, and differentiation. This research is a research and development with a development process using a 4D development model developed by Thiaragajan, et al (1974) covering four stages, i.e. : Define, Design, Development, and Disseminate, which in this study was only conducted up to 3D (development stage). The definition stage is performed student analysis, material analysis, and objective analysis. The design stage is the preparation of tests and the selection of test formats. The development stage consists of instrument preparation, expert validation and product trials to students. The test instruments developed are assessed according to the indicators and aspects of validation so that they are declared valid by the validator. The reliability value of the test instrument developed is 0.66 which belongs to the category of moderate reliability. Furthermore, the level of difficulty obtained is 8 medium questions and 2 easy questions, and the differentiation obtained is 7 enough questions and 3 good questions. The developed test instruments are acceptable and eligible to be used as test results of students' learning results on sound wave materials in grade 11 of high school.

DEVELOPMENT OF HOTS-BASED TEST INSTRUMENTS TO MEASURE STUDENTS' CRITICAL THINKING SKILLS MAJOR MATERIALS AND UNIT Panuqih, Frisma Winda Afifah; Sabani, Sabani
(IPER) Indonesian Physics Education Research Vol. 5 No. 1 (2024): IPER (Indonesian Physics Education Research)
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/iper.v5i1.26962

This study aims to develop a HOTS-based test instrument in measuring students' critical thinking skills on the material of quantities and units at SMAN 2 Rambah Hilir which has met the criteria for testing the instrument's feasibility including content validity, item validity, reliability testing, level of difficulty, discriminating power, and student response test. This research is a research development or Research and Development (RnD) using the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. This research was conducted at SMA Negeri 2 Rambah Hilir with the research subjects of class X MIPA SMA Negeri 2 Rambah Hilir. Based on the data obtained from content validity with the Lawshe technique, 10 questions were obtained that could be used. Meanwhile , from testing the validity of the items , there are 8 valid questions and 2 invalid questions . In the reliability test obtained a value of 0.543390 with moderate correlation criteria. For the level of difficulty, scores ranged from 0.297 to 0.70 with the criteria that 1 item was said to be easy, 1 item was said to be difficult, and 8 items were said to be moderate . While different power derive a value of -1 , 8 - 2.5 with a category 2 a matter of saying ugly and the two problems said to be good at all. Meanwhile, to test students' response was obtained by 78 , 1 % in both categories. The conclusion from the overall test results is that the HOTS-based test instrument is feasible to use to measure critical thinking skills.Keywords : Development of Test Instruments, Critical Thinking Skills, Quantities and Units

ANALYSIS OF STUDENTS CRITICAL THINKING ABILITY ON DISTANCE LEARNING PHYSICS LESSONS SMA/MA CITY OF TANJUNGBALAI T.A 2020/2021 Panjaitan, Heri Syahputra Azhar; Sabani, Sabani
(IPER) Indonesian Physics Education Research Vol. 2 No. 1 (2021): IPER (Indonesian Physics Education Research)
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/iper.v2i1.28523

This study aims to determine the level of students' critical thinking skills in distance learning physics subjects using aspects of critical thinking skills according to Ennis. The method used is descriptive with a quantitative approach. The population in this study was all SMA/MA Tanjungbalai City. The research sample was taken by purposive sampling as many as 150 students of class X from 5 sample schools SMA/MA Tanjungbalai City. The research instrument is a test of critical thinking skills and a questionnaire. The critical thinking ability of SMA/MA students in Tanjungbalai City in the subject of straight-motion physics in distance learning is still low overall. The average test of students' critical thinking skills is 55,73 in the low category. With the average achievement of each aspect, namely 61,83 in the aspect of Elementary Clarification, 56,37 in the aspect of Basic Support, 53,60 in the aspect of Interference, 56,17 in the aspect of Advance Clarification, 50,67 in the aspect of Strategy and Tactics. Student responses to distance learning show that all respondents of SMA/MA Tanjungbalai On the aspect of access to the use of distance learning, students gave an average response of 70%, indicating that students still find it difficult to use the distance learning method applied. Understanding the material shows that learning occurs when 78% of students better understand the material in face-to-face learning, and 52% of students understand physical lessons through distance learning. The aspect of implementing distance learning shows that students' responses to the effectiveness of distance learning are weak, with an average response of 65%

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