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ORBITA: Jurnal Pendidikan dan Ilmu Fisika
Published by Universitas Muhammadiyah Mataram
ISSN : 24609587     EISSN : 26147017     DOI : https://doi.org/10.31764/orbita.v8i2.10197
Core Subject : Science, Education,
Education Physics
ORBITA: Jurnal Kajian, Inovasi, dan Aplikasi Pendidikan Fisika invites and welcomes the submission of advanced research and review papers, innovations and developed selected conference papers that have never been previously publicized. This journal provides publications and a forum to the academics, scholars and advanced level students for exchanging significant information and productive ideas associated with all these disciplines. The relevant topics of the latest progressive findings or developments will be taken seriously into consideration, the topics covered by the journals include: Physics Education : Physics learning innovation; Physics learning methods, models, and approaches; Physics learning media; ICT in Physics learning; Physics learning evaluation and assesment; Etnophysics. Ecophysics Applied Physics : Theoretical and computational physics; Instrumentation physics; Geophysics; Material Physics; Biophysics and Medical Physics.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 276 Documents
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ANALISIS RADIASI MEDAN MAGNET PERALATAN ELEKTRONIK RUMAH TANGGA TERHADAP KESEHATAN Agung Dwi Cahyono; Sudarti Sudarti; Trapsilo Prihandono
ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika Vol 9, No 1 (2023): Mei
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v9i1.14654

Abstract

ABSTRAKRadiasi medan magnet di lingkungan rumah tangga pada beberapa peralatan elektronik dengan jarak tertentu dapat menimbulkan resiko gangguan kesehatan. Penggunaan elektronik bagi rumah tangga di masa serba digital menjadi perangkat yang sangat efisien untuk membantu manusia dalam melaksanakan berbagai aktifitas secara bersama-sama. Namun demikian elektronik yang dimanfaatkan tidak begitu saja berdampak baik bagi manusia, melainkan juga dapat berbahaya apabila digunakan secara terus-menerus. Hal ini dikenal dengan istilah radiasi atau partikel atau pancaran yang dihasilkan oleh medan magnet dan medan listrik yang didapatkan pada saat elektronik tersebut dalam keadaan stand by atau beroperasi. Adapun penelitian ini dilakukan pada 4 peralatan elektronik diantaranya: TV, Kulkas, Rice Cooker dan Vacuum Cleaner. WHO menyatakan bahwa nilai ambang batas untuk manusia mendapatkan radiasi di lingkungan rumah tangga sebesar 100μT. Sedangkan berdasarkan hasil bahwa vacuum cleaner memiliki pengaruh yang beresiko terhadap kesehatan karena memiliki intensitas medan magnet yang lebih besar dari nilai ambang batas pada posisi 0 cm. Kata kunci: efek radiasi; medan magnet; radiasi elektronik. ABSTRACTMagnetic field radiation in the household environment on several electronic equipment at a certain distance can pose a risk of health problems. The use of electronics for households in an all-digital era is a very efficient device to help humans carry out various activities together. However, the electronics that are used do not just have a good impact on humans, but can also be dangerous if used continuously. This is known as radiation or particles or emission generated by the magnetic field and electric field that is obtained when the electronics are in standby or operating state. This research was conducted on 4 electronic equipment including: TV, Refrigerator, Rice Cooker and Vacuum Cleaner. WHO states that the threshold value for humans to receive radiation in the household environment is 100μT. Meanwhile, based on the results that the vacuum cleaner has a risky influence on health because it has a magnetic field intensity that is greater than the threshold value at 0 cm. Keywords: radiation effect; magnetic field; electronic radiation.
EFEKTIVITAS BAHAN BIOBRIKET BUAH NYAMPLUNG SEBAGAI BAHAN BAKAR ALTERNATIF TERHADAP LAJU PEMBAKARAN DAN NILAI KALOR A'an Hardiyansah Putra Wijaya; Sukainil Ahzan; Dwi Pangga
ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika Vol 9, No 1 (2023): Mei
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v9i1.14248

Abstract

ABSTRAKPenelitian ini bertujuan untuk mengetahui efektivitaf bahan biobriket buah nyamplung terhadap laju pembakaran dan nilai kalor. Proses pembuatan biobriket menggunakan alat tekan manual yang dibuat dengan besi plat, bahan yang digunakan ialah buah nyamplung dan tepung tapioka. Densitas biobriket dihasilkan berkisaran 0,96 g/cm3 – 1,8 g/cm3, densitas terendah didapat pada biobriket dengan perbandingan arang kulit buah nyamplung 90% dan perekat tepung tapioka 10%. Sedangkan densitas tertinggi didapat pada biobriket dengan perbandingan 50% arang isi dan 50% arang kulit buah nyamplung. Kadar air yang paling tinggi terdapat pada biobriket dengan campuran arang kulit buah nyamplung 85% dan perekat 15%. Sedangkan kadar air yang paling rendah terdapat pada biobriket dengan campuran 50% arang isi dan 50% arang kulit buah nyamplung. Kadar air yang didapat pada penelitian ini berkisaran 4,16% - 7,14%. Laju pembakaran yang tertinggi terdapat pada biobriket dengan campuran 50% arang isi dan 50% arang kulit buah nyamplung. Hasil laju pembakaran berkisaran 1,66 g/menit – 8,28 g/menit. Nilai kalor yang tertinggi terdapat pada biobriket dengan campuran 50% arang isi dan 50% arang kulit buah nyampung. Sedangkan nilai kalor yang terendah terdapat pada biobriket dengan campuran 90% arang kulit buah nyamplung dan 10% perekat. Nilai kalor yang dihasilkan berkisaran 2309,88 kalori – 14253,96 kalori. Dari hasil penelitian dapat dilihat bawha laju pembakaran dan nilai kalor yang tertinggi terapat pada biobriket campuran 50% arang isi dan 50% arang kulit buah nyamplung. Kata kunci: biobriket; buah nyamplung; laju pembakaran; nilai kalor ABSTRACTThis study aims to determine the effectiveness of nyamplung fruit biobriquette on burning rate and calorific value. The process of making biobriquettes uses a manual press made of plate iron, the materials used are nyamplung fruit and tapioca flour. The density of the resulting biobriquettes ranged from 0,96 g/cm3 – 1,8 g/cm3, the lowest density was found in biobriquettes with a ratio of 90% nyamplung fruit skin charcoal and 10% tapioca flour adhesive. While the highest density was found in biobriquettes with a ratio of 50% filled charcoal and 50% nyamplung fruit shell charcoal. The highest water content was found in biobriquettes with a mixture of 85% nyamplung fruit skin charcoal and 15% adhesive. While the lowest water content was found in biobriquettes with a mixture of 50% filled charcoal and 50% nyamplung fruit shell charcoal. The water content obtained in this study ranged from 4.16% - 7.14%. The highest burning rate was found in biobriquettes with a mixture of 50% filled charcoal and 50% nyamplung fruit skin charcoal. The resulting combustion rate ranges from 1.66 g/minute – 8.28 g/minute. The highest calorific value was found in biobriquettes with a mixture of 50% filled charcoal and 50% nyampang fruit skin charcoal. Meanwhile, the lowest calorific value was found in biobriquettes with a mixture of 90% nyamplung fruit peel charcoal and 10% adhesive. The resulting caloric value ranges from 2309.88 calories to 14253.96 calories. From the results of the study it can be seen that the highest burning rate and calorific value were found in biobriquettes mixed with 50% filled charcoal and 50% nyamplung fruit shell charcoal. Keyword: biobriquettes; nyamplung fruit; burning rate; calorific value
HASIL BELAJAR MAHASISWA PRODI PENDIDIKAN FISIKA PADA PERKULIAHAN DENGAN PROJECT BASED LEARNING Hikmawati, Hikmawati; Verawati, Ni Nyoman Sri Putu; Ayub, Syahrial
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 9, No 2 (2023): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v9i2.14925

Abstract

ABSTRAKPenelitian ini bertujuan untuk mendeskripsikan hasil belajar mahasiswa Prodi Pendidikan Fisika pada perkuliahan dengan Project based Learning (PjBL). Penelitian eksperimen ini menggunakan desain: one shot case study. Subyek penelitian terdiri dari 19 orang mahasiswa yang mengikuti perkuliahan Administrasi dan Manajemen Sekolah, pada Semester Genap 2023, di Program Studi Pendidikan Fisika, FKIP, Universitas Mataram. Penelitian dimulai sejak 14 Februari hingga 28 Maret 2023, dengan jumlah pertemuan sebanyak 7 kali. Instrumen penelitian yang digunakan adalah tes essay sebanyak 5 butir soal yang diberikan pada pertemuan ke-8. Hasil belajar mahasiswa dinyatakan dalam bentuk persentase. Mahasiswa dinyatakan tuntas belajar secara individual apabila memperoleh nilai minimal 75. Ketuntasan klasikal diperoleh apabila minimal 80% mahasiswa tuntas belajar secara individual. Dari hasil penelitian diperoleh nilai rata-rata mahasiswa sebesar 83, dengan ketuntasan klasikal sebesar 89%. Oleh karena itu, dapat disimpulkan bahwa penerapan PjBL pada perkuliahan Administrasi dan Manajemen Sekolah dapat menuntaskan hasil belajar mahasiswa calon guru fisika. Kata kunci: project based learning; hasil belajar. ABSTRACTThis study aims to describe the learning outcomes of Physics Education Study Program students in Project-based Learning (PjBL) lectures. This experimental research uses a design: one shot case study. The research subjects consisted of 19 students taking School Administration and Management courses, in Even Semester 2023, at the Physics Education Study Program, FKIP, University of Mataram. The research started from 14 February to 28 March 2023, with a total of 7 meetings. The research instrument used was an essay test with 5 questions given at the 8th meeting. Student learning outcomes are expressed in percentage form. Students are declared to have completed learning individually when they obtain a minimum score of 75. Classical completeness is obtained when at least 80% of students have completed studying individually. From the research results, it was obtained that the average student score was 83, with classical completeness of 89%. Therefore, it can be concluded that the application of PjBL in School Administration and Management lectures can complete the learning outcomes of prospective physics teacher students. Keywords: project based learning; learning outcomes.
PENGUKURAN VISKOSITAS OLI DAN MINYAK GORENG MENGGUNAKAN SENSOR MINI REED SWITCH MAGNETIC BERBASIS ARDUINO Pratiwi, Umi; Luthfia, Adilla
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 9, No 2 (2023): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v9i2.17342

Abstract

ABSTRAKViskositas merupakan sifat penting dalam banyak aplikasi industri seperti minyak, cat, adhesif, dan bahan kimia. Kualitas bahan material sebagai bahan baku industri memerlukan kualitas yang baik seperti sifat viskositas. Diperlukan sebuah alat pengukuran yang efektif dan presisi dalam mengetahui kualitas bahan berdasarkan sifat viskositasnya. Salah satunya pengukuran berbasis digital dan mikrokontroler. Penelitian ini bertujuan untuk merancang alat peraga viskositas yang dilengkapi dengan sensor mini reed switch magnetic berbasis Arduino. Alat peraga ini menggunakan sensor mini reed switch magnetic sebagai detektor pergerakan bola baja di dalam tabung. Sensor ini menghasilkan sinyal yang dikirim ke Arduino, kemudian mengolah data dan menampilkan nilai viskositas pada layar LCD. Metode penelitian ini menggunakan penelitian eksperimen berbasis laboratorium  dengan melakukan karakterisasi viskositas skala laboratorium menggunakan lima larutan  fluida yaitu air, minyak goreng bekas, minyak goreng baru, oli bekas dan oli baru. Sampel viskositas dimasukkan ke dalam tabung, dan bola baja ditempatkan di dalam larutan. Motor stepper kemudian menggerakkan bola baja dengan kecepatan yang ditentukan, dan sensor reed switch magnetic mendeteksi pergerakan bola tersebut. Data yang diperoleh dari sensor dikirim ke Arduino, diolah, dan hasil viskositas ditampilkan pada layar LCD. Hasil pengukuran besar nilai viskositas fluida air, minyak goreng bekas, minyak goreng baru, oli bekas, dan oli baru berturut-turut menghasilkan (satuan Pa.s) 2,12; 3,18; 2,84; 3,52; dan 7,71. Hasil pengujian menunjukkan bahwa alat peraga viskositas ini mampu memberikan hasil yang akurat dan konsisten dalam mengukur viskositas larutan fluida dengan rata-rata eror 7,425% dibandingkan dengan alat peraga viskositas konvensional. Alat peraga ini juga dapat digunakan untuk mengukur viskositas berbagai jenis cairan dengan penyesuaian parameter yang sesuai. Kata kunci: viskositas fluida; sensor mini reed switch magnetic. ABSTRACTViscosity is an important property in many industrial applications such as oils, paints, adhesives, and chemicals. The quality of materials as industrial raw materials requires good quality such as viscosity properties. An effective and precise measurement tool is needed to determine the quality of materials based on their viscosity properties. One of them is digital and microcontroller based measurements. This research aims to design a viscosity demonstration tool equipped with an Arduino-based magnetic mini reed switch sensor. This teaching aid uses a mini reed switch magnetic sensor as a detector for the movement of steel balls in the tube. This sensor produces a signal which is sent to the Arduino, then processes the data and displays the viscosity value on the LCD screen. This research method uses laboratory-based experimental research by conducting laboratory-scale viscosity characterization using five fluid solutions, namely water, used cooking oil, new cooking oil, used oil and new oil. The viscosity sample is put into a tube, and a steel ball is placed in the solution. The stepper motor then moves the steel ball at a specified speed, and a magnetic reed switch sensor detects the movement of the ball. The data obtained from the sensor is sent to Arduino, processed, and the viscosity results are displayed on the LCD screen. The results of measuring the fluid viscosity values of water, used cooking oil, new cooking oil, used oil and new oil respectively produced (Pa.s units) 2.12; 3.18; 2.84; 3.52; and 7.71. The test results show that this viscosity probe is able to provide accurate and consistent results in measuring the viscosity of fluid solutions with an average error of 7.425% compared to conventional viscosity probes. This instrument can also be used to measure the viscosity of various types of liquids with appropriate parameter adjustments. Keywords: fluid viscosity; magnetic mini reed switch sensor.
Development of an e-module in basic physics II integrated with the alquran based on a saintific approach Chandra, Artha Nesa; Lizelwati, Novia
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 10, No 1 (2024): May
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v10i1.22939

Abstract

This research is motivated by students' need for teaching materials that can be used as a guide to study independently anywhere and at any time in the Basic Physics II course. One of the teaching materials that can be used is E-Module. It is hoped that the Basic Physics II E-Module can help students understand lecture material, reduce student confusion and boredom in studying the large amount of Basic Physics II material. This research aims to produce a Basic Physics II E-module integrated with the Al-Quran based on a scientific approach that is valid and practical. This development research uses the ADDIE development model which consists of the Analysis, Define, Design, Implementation and Evaluation stages. The research instrument is a product validation sheet which was validated by several experts in the fields of media, materials and interpretation. The instrument is a response questionnaire sheet to measure product practicality by students. Data analysis was carried out in the form of analysis of validation results and analysis of student responses as users. This analysis was carried out descriptively. The data obtained from the questionnaire is tabulated and presented in tabular form, then the percentage is searched according to the formula, then the results of this percentage are compared with each value with the validity and practicality categories. Based on the results of data analysis, the average validity of the E-module according to material experts, media experts and interpretation experts was respectively 83%, 94% and 91.67% in the very valid category. The results of the student practicality questionnaire analysis were worth 84.48% in the very practical category. Thus, the E-module developed can be used as teaching material in Basic Physics II lecture activities.
STUDI LITERATUR: PENGARUH PROJECT BASED LEARNING PADA PEMBELAJARAN FISIKA Noorhalida, Noorhalida; Yuliani, Hadma; Santiani, Santiani
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 9, No 2 (2023): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v9i2.15688

Abstract

ABSTRAKStudi literatur dari berbagai sumber terkait pengaruh model pembelajaran fisika SMA menemukan bahwa Project Based Learning banyak digunakan terutama dalam peningkatan kemampuan siswa. Penggunaan model Project Based Learning dalam pembelajaran terkhusus pada SMA saat ini jarang di terapkan sekolah padahal penggunaan model ini sangat berguna dalam pembelajaran, oleh karena itu penelitian ini bertujuan untuk mengkomparasi kelebihan dan kekurangan dari Project Based Learning dalam pembelajaran fisika agar sekolah banyak dalam menerapkannya. Studi ini dirancang dan dilakukan dalam tinjauan jurnal nasional yang akurat dan terindeks Sinta dalam jangkauan 5 tahun terakhir. Kriteria jurnal yang digunakan ialah mencakup hasil singnifikan yang tinggi, professional, dan terakreditasi. Berdasarkan hasil kajian pustaka, kelebihan pengaruh Project Based Learning pada pembelajaran fisika terdapat peningkatan kemampuan berpikir kreatif siswa dan kekurangan Project Based Learning pada pembelajaran fisika yaitu alokasi waktu yang terlalu lama ketika diterapkan. Diharapkan dengan adanya penelitian ini membuat banyak peneliti menggunakan model Project Based Learning dalam pembelajaran dengan meninjau kelebihan dan kekurangan yang ada sehingga dapat meningkatkan kemampuan siswa dengan model Project Based Learning yang diterapkan. Kata kunci: pengaruh; model pembelajaran; project based learning; pembelajaran fisika ABSTRACTLiterature studies from various sources related to the influence of the high school physics learning model found that Project-Based Learning is widely used, especially in improving students' abilities. The use of the Project Based Learning model in learning, especially in high school, is currently rarely applied to schools even though the use of this model is very useful in learning, therefore this study aims to compare the advantages and disadvantages of Project Based Learning in spectacle learning so that many schools apply it. This study was designed and carried out in reflection of the accurate and indexed national journal Sinta within the last 5 years. The journal criteria used include high significant results, professionalism, and accreditation. Based on the literature review, the excess influence of Project-Based Learning on physics learning increased students' creative thinking abilities and the disadvantages of Project-Based Learning on physics learning were the time allocation that was too long when applied. It is hoped that this research will make many researchers use the Project Based Learning model in learning by reviewing the strengths and weaknesses that exist so that they can improve students' abilities with the Project Based Learning model applied. Keywords: influence; learning model; project based learning; physics learning
Reducing the quantity of students who have misconceptions about archimedes' law material using the Children Learning in Science (CLIS) model Murdani, Eka; Kumala, Devi; Sumarli, Sumarli
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 10, No 1 (2024): May
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v10i1.22543

Abstract

This research aims to determine the decrease in the quantity of students who have misconceptions about Archimedes' law material after the CLIS learning model has been implemented, determine student responses to the CLIS learning model that has been implemented, and determine the implementation of learning activities using the CLIS model. The research was carried out using quantitative methods. The population in this research was all students of class XI IPA MAN 1 Singkawang. The data in the research was obtained by giving sheets to the students. The instruments used were a TTT sheet consisting of 10 questions, a student response sheet with 9 questions, an observation sheet on the implementation of the CLIS learning model. Based on the results of the analysis of students' misconceptions, the highest decrease was in the concept "Objects sink in water because objects are heavier than water" namely 64.2% in the medium category. Student response to the CLIS learning model was 85% in the positive category. The implementation of the CLIS learning model is 100% with all activities carried out in the category. Therefore, it can be concluded that implementing CLIS can reduce the quantity of students who have misconceptions.
IMPLEMENTASI MODEL PROJECT BASED LEARNING (PjBL) MELALUI LESSON STUDY UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH FISIKA Rezeki, Hindi; Syahidi, Khaerus; Mardi, Eko Septi
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 9, No 2 (2023): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v9i2.16560

Abstract

ABSTRAKPenelitian ini adalah penelitian tindakan kelas yang bertujuan untuk mengkaji implementasi model Problem Based Learning dengan Lesson Study untuk meningkatkan kemampuan pemecahan masalah fisika peserta didik kelas X. Penelitian ini dilaksanakan di kelas X MIPA 1 SMAN 3 Selong pada semester genap tahun ajaran 2022/2023 dengan 30 peserta didik. Penelitian ini dilakukan sebanyak 2 siklus. Data diperoleh melalui observasi dan tes kemampuan pemecahan masalah. Data yang diperoleh dianalisis dengan perhitungan N-Gain. Hasil perhitungan menunjukan bahwa nilai N-Gain yang diperoleh sebesar 0,32 yang berarti bahwa terjadi peningkatan kemampuan pemecahan masalah dengan kategori sedang. Dengan demikian dapat disimpulkan bahwa implementasi model Project Based Learning melalui Lesson Study dapat meningkatkan kemampuan pemecahan masalah fisika peserta didik. Kata kunci: problem based learning; lesson study; kemampuan pemecahan masalah. ABSTRACTThis research is a classroom action research that aims to examine the implementation of the Problem-Based Learning model with a Lesson Study to improve the physics problem-solving abilities of class X students. This research was conducted in class X MIPA 1 SMAN 3 Selong in the even semester of the 2022/2023 school year with 30 learners. This research was conducted in 2 cycles. Data was obtained through observation and problem-solving ability tests. The data obtained were analyzed by calculating the N-Gain. The calculation results show that the N-Gain value obtained is 0.32 which means that there is an increase in problem-solving abilities in the moderate category. Thus it can be concluded that the implementation of the Project Based Learning model through Lesson Study can improve students' physics problem-solving abilities. Keywords: problem-based learning; lesson study; problem-solving abilities.
PENERAPAN COLLABORATIVE LEARNING UNTUK MENINGKATKAN HASIL BELAJAR SISWA PADA MATERI PERPINDAHAN KALOR Yusal, Yulianti; Wulandari, Ratna Wahyu; Anggraini, Atika; Maiyanti, Aziza Anggi
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 9, No 2 (2023): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v9i2.17314

Abstract

ABSTRAKPersaingan di abad 21 semakin ketat dan persaingan semakin berat sehingga banyak model pembelajaran yang bermunculan untuk meningkatkan hasil belajar siswa. Penelitian ini bertujuan untuk mengetahui apakah collaborative learning dapat meningkatkan hasil belajar siswa pada materi perpindahan kalor. Penelitian ini menggunakan metode pre-eksprimental dengan one group pretest-posttest group design. Subjek penelitian ini adalah siswa kelas V-B pada salah satu SDI di Kabupaten Kediri yang berjumlah 17 siswa yang terdiri dari 10 laki-laki dan 7 perempuan. Instrumen penelitian yang digunakan pada penelitian ini adalah instrumen tes hasil belajar aspek kognitif tentang materi perpindahan kalor. Berdasarkan hasil analisis data menunjukkan bahwa nilai rata-rata hasil belajar siswa pada pretest yaitu 58,82 dan meningkat menjadi 76,76 pada posttest. Persentase jumlah siswa yang mengalami peningkatan hasil belajar pada kategori sedang yaitu 76%. Hasil analisis rata-rata N-gain yaitu 0,43 yang juga menunjukkan bahwa peningkatan hasil belajar siswa berada pada kategori sedang. Dengan demikian, penerapan collaborative learning dapat meningkatkan hasil belajar siswa pada materi perpindahan kalor. Kata kunci: collaborative learning; hasil belajar; perpindahan kalor ABSTRACTCompetition in the 21st century is getting tougher and competition is getting tougher so that many learning models have emerged to improve student learning outcomes. This study aims to determine whether collaborative learning can improve student learning outcomes on heat transfer material. This study used the pre-experimental method with one group pretest-posttest group design. The subjects of this study were 17 students in class V-B at one of the SDIs in Kediri Regency, consisting of 10 boys and 7 girls. The research instrument used in this study was the test instrument for cognitive aspects of learning outcomes regarding heat transfer material. Based on the results of data analysis showed that the average score of student learning outcomes in the pretest was 58.82 and increased to 76.76 in the posttest. The percentage of the number of students who experienced an increase in learning outcomes in the medium category was 76%. The results of the analysis of the average N-gain is 0.43 which also shows that the increase in student learning outcomes is in the medium category. Thus, the application of collaborative learning can improve student learning outcomes on heat transfer material. Keywords: collaborative learning; learning outcomes; heat transfer
Fabrication of fine particle powder from Teak (Tectona Grandis) leaves as a textile dyeing with environmentally friendly technology Budianto, Arif; Dewi, Diah L.; Rahayu, Susi; Kurniawidi, Dian W.; Akhyar, Halil; Alaydrus, Alfina T.
ORBITA: Jurnal Pendidikan dan Ilmu Fisika Vol 10, No 1 (2024): May
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/orbita.v10i1.22509

Abstract

Green technology for eco-friendly dyes in textile industries has been required in recent decades. An innovation was established by producing textile dyes from natural sources. This research aims to identify fine particle powder's characteristics and analyze the color changes applied to the textile. The mechanical thermal was utilized to produce natural dyes. Three main stages were conducted to obtain dye powder: mordant, coloring, and fixation. The dye powder was examined for water content, phytochemical tests, FTIR, SEM-EDX, and color using the Android-based Color Analyzer and Color Grab applications. The results show that the water content of 7.21% meets the SNI 01-3709-1995 standard. So, the powder can be stored for a long time because it does not quickly spoil. In addition, the phytochemical test resulted in alkaloids, flavonoids, and tannins. This revealed that teak leaf powder can be a suitable textile dye. After that, SEM-EDX examination illustrated that the powder had a round, flat, elongated morphology, a sharp edge texture, and an irregular position. Meanwhile, the EDX signified that the recognized chemical elements did not damage the environment, and the powder diameter ranges from 0.5-8.5 μm. The powder size complied with the fine particle powder category. To analyze the color from the dye powder application, there were color changes during each dyeing process. During all stages, from making the powder to applying the powder to the fabric, environmentally friendly technology was utilized. Therefore, this research can promote new opportunities for innovation and development of highly competitive products towards a more environmentally friendly and sustainable textile industry.

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