Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam最新文献

{"title":"Pengembangan Bahan Ajar IPA Berbasis Flipbook untuk Meningkatkan Kemampuan Berpikir Kreatif pada Siswa SMP/MTs","authors":"Resita Nova Elisya, Sri Wahyuni, N. Ahmad","doi":"10.35580/sainsmat121440992023","DOIUrl":"https://doi.org/10.35580/sainsmat121440992023","url":null,"abstract":"Penelitian ini bertujuan untuk mendeskripsikan  kevalidan, kepraktisan, dan keefektivitas bahan ajar berbasis flipbook  untuk meningkatkan kemampuan berpikir kreatif siswa. Model pengembangan dalam penelitian ini ialah model plomp. Subyek penelitian sebanyak 25 peserta didik di kelas VII C SMP 2 Maesan dengan desain uji coba pretest dan posttest . Hasil penelitian pengembangan yang diperoleh adalah (1) Kevalidan bahan ajarnya dinilai oleh tiga validator memiliki rata-rata persentase 90% kategori sangat valid (2) Kepraktisan bahan ajarnya memiliki rata-rata persentase 89,5% yang disimpulkan kategori sangat praktis yang dinilai oleh tiga observer (3) keefektivitas bahan ajar didapat dari nilai N-gain pre-test dan post-test dengan menujukan rata-rata skor sebesar 0,64 yang disimpulkan kategori sedang dan angket respon siswa memiliki presentase 81,8% termasuk kategori sangat baik.Kata kunci: Bahan Ajar, Flipbook, kreatif","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125883858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generalized Space-Time Autoregressive Integrated Moving Average (GSTARIMA) Modeling in Forecasting Covid-19 Cases in Indonesia","authors":"R. Rahmawati, S. Annas, A. Aswi","doi":"10.35580/sainsmat121442822023","DOIUrl":"https://doi.org/10.35580/sainsmat121442822023","url":null,"abstract":"Covid-19 is an infectious disease caused by Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2). The spread of Covid-19 in Indonesia has grown rapidly that the World Health Organization (WHO) has declared Covid-19 a pandemic. Covid-19 cases have spread to 34 provinces in Indonesia. Covid-19 data in Indonesia involves space and time so the appropriate modeling is the space-time model. Space-time modeling of the Covid-19 case in 34 provinces in Indonesia using the Generalized Space-Time Autoregressive Integrated Moving Average (GSTARIMA) model has not been carried out. The purpose of this research is to get the best GSTARIMA model and forecat the Covid-19 case for the next several times. This model incorporates time and location interdependence with different parameters for each location. Identification of the order of the AR and MA was carried out through the STACF and STPACF plots. For simplicity of interpretation, the spatial order is chosen first order. In this study, the queen contiguity and the inverse distance location weighting matrix were used. The parameter estimation used is Ordinary Least Square (OLS). The results show that the best model for predicting Covid-19 cases in 34 provinces in Indonesia is the GSTARIMA model (1,1,0)1 using an inverse distance weighting matrix with the smallest RMSE value of 1.22.Keywords: Covid-19, GSTARIMA, Queen Contiguity, Inverse Distance, OLS.","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129316321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kemampuan Metakognitif Siswa d alam Pembelajaran IPA Kelas VII di SMP Bosowa School Makassar","authors":"Priscilia Indah Palangi, St. Muriati, Rizki Trisnawaty Arwien, Zose Wirawan, Jaja Jamaluddin","doi":"10.35580/sainsmat121438382023","DOIUrl":"https://doi.org/10.35580/sainsmat121438382023","url":null,"abstract":"Metakognisi merujuk pada kemampuan untuk mengatur proses kognitif seseorang, termasuk dalam hal mengingat, memahami, mengaplikasikan, menganalisis, mengevaluasi, dan menciptakan sesuatu yang berkaitan dengan mata pelajaran tertentu. Penelitian ini bertujuan untuk mengevaluasi kemampuan metakognitif siswa dalam menerapkan, mengulang, dan menjelaskan materi ilmu pengetahuan alam. Penelitian ini menggunakan pendekatan kuantitatif, yakni metode ilmiah sistematis yang digunakan untuk menyelidiki fenomena dan hubungan kausalitasnya. Populasi penelitian adalah seluruh siswa SMP Bosowa School Makassar, sedangkan sampel terdiri dari 11 siswa dari kelas VII. Data dikumpulkan melalui teknik survei yang menggunakan kuesioner. Hasil penelitian menunjukkan bahwa siswa kelas VII SMP Bosowa School Makassar memiliki kemampuan metakognitif yang baik, yang menunjukkan bahwa mereka memiliki pemahaman yang solid tentang konsep ilmu pengetahuan alam dan tidak mengalami kesulitan dalam mempelajarinya.Kata kunci: Pengetahuan Metakognisi, Pembelajaran IPA, Gaya Belajar Reflektif","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116209394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengembangan Instrumen Berpikir Kritis : Tutor Identifikasi Berfikir Kritis","authors":"Adisti Yuliastri, Annisa Fazila Sabrina Damanik, Rian Vebrianto","doi":"10.35580/sainsmat121424632023","DOIUrl":"https://doi.org/10.35580/sainsmat121424632023","url":null,"abstract":"Research instrument is an important factor in research where the truth of research results lies and determines conclusions. The aim of this study is to review valid, consistent and reliable instruments for critical thinking. In this study, critical thinking consists of five construct, namely : (1) Provide a simple explanation; (2) Development of basic skills; (3) Summary; (4) Provide a more detailed explanation; and (5) Deciding the next strategy. Designed as a survey research, it involved 50 respondents consisting of 3 experts/lectures, 5 teacher and 42 students who were selected by stratified sampling technique and random chance. Data were analyzed using SPSS Version 23.00 for Windows to test internal concistency using Cronbach Alpha. The results showed that all items in the questionnaire were valid and reliable, withan average high Cronbach’s Alpha realibility score (0.897 > 0.6) and each statement had a high score (0.784 to 0.890). Therefore, these numbers indicate that this study has developed a qualitative critical thinking toolkit. Kata kunci: Berpikir Kritis, Instrumen, Tutor ","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"18 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120845919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dispersi: Studi Pendahuluan Revitalisasi Pemanfaatan Karbon Aktif sebagai Material Elektroda.","authors":"Shielda Natalia Joris, Nelson Gaspersz, M. R. Sohilait","doi":"10.35580/sainsmat121428772023","DOIUrl":"https://doi.org/10.35580/sainsmat121428772023","url":null,"abstract":"Karbon aktif merupakan salah satu material karbon yang murah, memiliki luas permukaan spesifik, porositas, dan nilai konduktivitas elektrik yang cukup tinggi. Hal ini membuat adanya beragam aplikasi karbon aktif sebagai adsorben, pengolahan air, dan juga dalam bidang energi. Studi dispersi karbon aktif memudahkan pengaplikasian karbon aktif sebagai material dasar dalam desain elektroda pada sel bahan bakar maupun baterai. Dalam penelitian ini, studi dispersi karbon aktif dilakukan dalam sistem air menggunakan agen aktif permukaan (surfaktan) Cetyl Trimethyl Ammonium Bromida (CTAB), Sodium Dodecyl Sulfate (SDS), dan Polysorbate 80 (Tween 80). Perbandingan karbon aktif dengan surfaktan divariasikan dari 1:0–1:5 untuk masing-masing surfaktan. Hasil pengukuran menggunakan spektrofotometer UV-Vis pada panjang gelombang 200–500 nm menunjukan bahwa surfaktan Tween 80 dengan perbandingan 0,05 gram karbon aktif dengan 3 mL Tween 80 mendispersikan karbon aktif dalam pelarut air dengan lebih baik dibandingkan dengan CTAB dan SDS.Kata kunci: karbon aktif, CTAB, SDS, Polysorbate, Tween 80, disperse, surfaktan","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122052396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efektivitas Penggunaan Video Youtube dalam Model Pembelajaran Direct Instruction terhadap Hasil Belajar Peserta Didik Kelas X MIPA 1 SMA Negeri 1 Wonomulyo (Studi pada Materi Pokok Reaksi Reduksi dan Oksidasi)","authors":"Gian Fikriansyah, Taty Sulastry, Jusniar Jusniar","doi":"10.35580/sainsmat121236342023","DOIUrl":"https://doi.org/10.35580/sainsmat121236342023","url":null,"abstract":"Penelitian ini merupakan penelitian pra eksperimen yang bertujuan untuk mengetahui seberapa besar efektivitas penggunaan video Youtube dalam model pembelajaran direct instruction terhadap hasil belajar peserta didik kelas X MIPA 1 SMA Negeri 1 Wonomulyo pada materi pokok reaksi reduksi dan oksidasi. Desain penelitian ini adalah the one group pretest posttest design. Subjek penelitian pada penelitian ini adalah peserta didik kelas X MIPA 1 SMA Negeri 1 Wonomulyo. Hasil analisis deskriptif menunjukkan peningkatan hasil belajar dari rata-rata sebelum perlakuan yaitu 34,63 meningkat menjadi 84,23 dengan rata-rata gain ternormalisasi 0,75 ini berarti penggunaan video Youtube dalam model pembelajaran direct instruction efektif dengan kategori tinggi terhadap hasil belajar peserta didik kelas X MIPA 1 SMA Negeri 1 Wonomulyo materi pokok reaksi reduksi dan oksidasi. Hasil pengujian hipotesis menggunakan uji-t pihak kanan diperoleh thitung = 4,5417 pada taraf signifikan α = 0,05 diperoleh ttabel = 1,699. Hal ini dapat disimpulkan bahwa H0 ditolak atau H1 diterima artinya penggunaan video Youtube dalam model pembelajaran direct instruction efektif meningkatkan hasil belajar peserta didik kelas X MIPA 1 SMA Negeri 1 Wonomulyo pada materi pokok reaksi reduksi dan oksidasi.Kata Kunci: Video Youtube, Direct Instruction, Hasil belajar.","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123281875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Populasi Plutella xylostella Linn. pada Tanaman Kubis (Brassica oleracea L.) Di Distrik Tanah Miring Kabupaten Merauke Provinsi Papua","authors":"Jefrianto Sembiring, Johanna Mendes","doi":"10.35580/sainsmat121376292023","DOIUrl":"https://doi.org/10.35580/sainsmat121376292023","url":null,"abstract":"Penelitian ini bertujuan untuk mengamati populasi dan intensitas serangan  P. xylostella pada tanaman kubis di Distrik Tanah Miring. Penelitian dilaksanakan di Distrik Tanah Miring Kabupaten Merauke Propinsi Papua pada bulan September-Desember  2020. Pengamatan dilakukan pada lahan 1/2 ha, kemudian ditentukan 10  plot dan masing masing-masing plot terdapat 12 tanaman.  Pengambilan data dilakukan pagi dengan cara mengamati secara langsung setiap tanaman pada lokasi yang sudah ditentukan. Pengambilan data dilakukan pada tanaman yang berumur dua minggu setelah dipindah tanam dari persemaian, kemudian dilakukan sebanyak enam  kali dengan interval waktu satu minggu. Rata-rata populasi tertinggi sebesar 1.11 individu terdapat pada 6 MST dan populasi terendah pada 1 MST sebesar 0.11 individu. Rata-rata kerusakan tertinggi terdapat pada waktu pengamatan 6 MST sebesar   59.17 % , sedangkan kerusakan rendah terdapat pada 1 MST sebesar 8.33%. Hal ini menunjukkan bahwa dengan jumlah populasi P. xylostella yang masih rendah mampu menyebabkan kerusakan hingga 8.33% tanaman kubis.Kata kunci: Kubis, Merauke, Papua, P. xylostella, ","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125949174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure Investigations of Natural Clay From Pattallassang District, Takalar Regency, South Sulawesi Province, Indonesia","authors":"A. Rahman, S. Putri, D. Pratiwi, Satria Putra Jaya","doi":"10.35580/sainsmat121444522023","DOIUrl":"https://doi.org/10.35580/sainsmat121444522023","url":null,"abstract":"The study aimed to investigate the microstructure of natural clay from Pattallassang District, Takalar Regency, South Sulawesi Province. The clay was characterized using X-ray diffractometer (XRD), surface area analyzer (SAA), and scanning electron microscope (SEM). The XRD analysis showed that the main mineral composition of the clay was kaolinite, quartz, hematite, geothite, magnetite, and anatase phases. The SAA using BET analysis shows the large surface area of 59.26 m2/g and BJH analysis for pore distribution of 32.77 nm. SEM observations revealed that the clay consists of plate-like kaolinite particles arranged randomly. The results indicate that the natural clay from Pattallassang District has good potential for use in various industrial applications due to its high kaolinite content and favorable microstructure.Keywords: kaolinite, microstructure, mineral, clay.","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133508671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Thematic Concept Understanding Assessment In Class V Science Learning Content.","authors":"Yusri Adi, N. Bakhtiar, R. Vebrianto, Adisti Yuliastrin","doi":"10.35580/sainsmat121391652023","DOIUrl":"https://doi.org/10.35580/sainsmat121391652023","url":null,"abstract":"Problems that are often faced by educators in measuring the level of understanding of students' concepts are questions that are made to have a low cognitive level and short answers which make the questions unable to properly measure the students' understanding. This study is useful in describing how the feasibility of a concept understanding assessment instrument is. The research design in this study is Research and Development based on the Borg & Gall model by only carrying out 5 steps due to several reasons. The subject of this research is an instrument for assessing the ability to understand concepts. The results of the analysis of the 12 assessment questions are feasible to use because they have a validity value of 0.56 with a \"enough\" category and a reliability value of 0.72 with a \"enough\" category and can be said to be a valid research instrument. And because there are 3 questions that have a negative significant value (-) then questions number 2, 10 and 12 are omitted so that this instrument is more valid.","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125689210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh Model Pembelajaran Treffinger terhadap Pemahaman Konsep Matematika Siswa Kelas XI MIPA SMAN 2 Majene","authors":"Ahmad Talib, B. Bernard, Muhammad Miswar Heru","doi":"10.35580/sainsmat121380962023","DOIUrl":"https://doi.org/10.35580/sainsmat121380962023","url":null,"abstract":"Abstrak. Penelitian ini dilatarbelakangi oleh rendahnya pemahaman konsep matematika siswa dimana berdasarkan pembahasan dan hasil dari penelitian yang relevan menunjukkan bahwa model pembelajaran Treffinger berpengaruh terhadap pemahaman konsep matematika siswa. Adapun tujuan dalam penelitian ini ialah untuk mengetahui pengaruh model pembelajaran Treffinger terhadap pemahaman konsep matematika siswa kelas XI MIPA SMAN 2 Majene. Penelitian ini merupakan penelitian kuantitatif dengan rancangan penelitian Pre-eksperimental dengan bentuk One-Group Pretest and Posttest Design. Teknik pengambilan sampel yang digunakan dalam penelitian ini ialah cluster random sampling. Teknik analisis data yang digunakan ialah teknik analisis deskriptif dan inferensial. Hasil analisis deskriptif menunjukkan bahwa: (1) nilai rata-rata hasil pretest siswa yaitu 54,99 pada kategori rendah dan nilai rata-rata hasil posttest siswa yaitu 70,39 pada kategori tinggi; (2) skor rata-rata gain ternormalisasi sebesar 0,36 pada kategori sedang. Hasil analisis inferensial menunjukkan bahwa: (1) nilai pemahaman konsep matematika siswa setelah diajar dengan menggunakan model pembelajaran Treffinger lebih besar dari 54,99 atau secara signifikan melebihi nilai ketuntasan minimum untuk tes pemahaman konsep matematika siswa; (2) nilai gain ternormalisasi peningkatan pemahaman konsep matematika siswa lebih besar dari 0,30 yang menunjukkan bahwa terdapat peningkatan yang signifikan pada tes pemahaman konsep matematika siswa setelah penerapan model pembelajaran Treffinger; (3) jumlah siswa yang mencapai nilai ketuntasan minimum pada posttest pemahaman konsep matematika siswa lebih besar dari 80% dimana secara signifikan melebihi persentase kriteria keterlaksanaan pembelajaran. Berdasarkan hasil penelitian yang telah diperoleh dapat disimpulkan bahwa pembelajaran dengan menggunakan model pembelajaran Treffinger berpengaruh terhadap pemahaman konsep matematika pada pokok bahasan barisan dan deret siswa kelas XI MIPA SMAN 2 Majene.Kata kunci: Model pembelajaran treffinger, Pemahaman konsep matematika. Barisan dan deret ","PeriodicalId":347044,"journal":{"name":"Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115700036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}