Talenta Conference Series: Science and Technology (ST)最新文献

{"title":"Analisis Model Optimasi Manajemen Persediaan dengan Menggunakan Metode EOQ","authors":"Nanik Suryani, Ihda Hasbiyati","doi":"10.32734/st.v2i2.481","DOIUrl":"https://doi.org/10.32734/st.v2i2.481","url":null,"abstract":"Manajemen persediaan adalah meminimumkan total biaya yang berhubungan dengan proses produksi dari suatu perusahaan. Dalam penelitian ini, penulis menganalisis model optimasi manajemen persediaan dengan meggunakan metode EOQ. Model optimasi yang diperoleh dapat digunakan untuk menyelesaikan masalah manajemen persediaan yang tepat untuk semua kondisi dan semua jenis perusahaan. \u0000  \u0000Inventory management is by means to minimize total cost of production process in a company. In this research, we analyzed optimization model of inventory management by using EOQ method. Optimization method obtained may be used to solve problems in inventory management effectively in every conditions and companies.","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117018747","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":"Uji Antioksidan dan Antibakteri Ekstrak Etanol Buah Mengkudu (Morinda citrifolia L.) Terhadap Bakteri Escherichia Coli dan Staphylococcus aureus","authors":"Emma Zaidar Nst, Rumondang Bulan Nst, S. Firman, Wahyuni Nst","doi":"10.32734/st.v2i2.510","DOIUrl":"https://doi.org/10.32734/st.v2i2.510","url":null,"abstract":"Uji antioksidan dan antibakteri dari Ekstrak Etanol Buah Mengkudu telah dilakukan terhadap bakteri Escherichia coli dan Staphylococcus aureus. Serbuk buah mengkudu diekstraksi dengan metode maserasi menggunakan pelarut etanol 70% sehingga menghasilkan ekstrak pekatnya.Dari hasil penelitian uji antioksidan diperoleh IC5033.92 mg/L, maka senyawa tersebut memiliki aktivitas antioksidan yang sangat kuat.Hasil uji antibakteri dari ekstrak etanol buah mengkudu terhadap bakteri Escherichia coli dan Staphylococcus aureus memiliki zona hambat masing masing 12 mm dan 14 mm yang dikategorikan kurang efektif. \u0000  \u0000Antioxidant test and antibacterial test of Noni Fruit Ethanol Extract. Has been done against Escherichia coli and Staphylococcus aureus bacteria. Noni fruit powder is extracted by maseration method using 70% ethanol solvent to produce concentrated extract. From the results of antioxidant test obtained by IC50 33,92 mg / L, then the compound has a very strong antioxidant activity. Antibacterial test results from the extract of ethanol of noni fruit against Escherichia coli and Staphylococcus aureus bacteria of at concentrations 500 mg / ml, zone of each 12 mm and 14 mm which are categorized as less effective. \u0000 ","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127880589","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":"Analisis Kebutuhan Petunjuk Praktikum Berbasis Keterampilan Proses Sains untuk Mencapai Kemampuan Merancang Eksperimen","authors":"Fitriah Khoirunnisa, Veri Firmansyah, F. Silitonga","doi":"10.31629/ZARAH.V7I1.1287","DOIUrl":"https://doi.org/10.31629/ZARAH.V7I1.1287","url":null,"abstract":"Penelitian ini bertujuan menganalisis kebutuhan petunjuk praktikum berbasis Keterampilan Proses Sains (KPS) untuk mencapai kemampuan merancang eksperimen pada materi kalor reaksi kalorimetri. Penelitian dilakukan terhadap peserta didik kelas XI SMA Negeri 2 Kota Tanjungpinang. Variabel penelitian mencakup analisis kebutuhan bahan ajar dan analisis kesesuaian Kompetensi Inti (KI) dan Kompetensi Dasar (KD). Jenis penelitian yang dilakukan adalah penelitian deskriptif kualitatif. Tahapan pertama dalam penelitian ini adalah menganalisis kebutuhan bahan ajar dengan cara membandingkan dua petunjuk praktikum yang selama ini telah digunakan di sekolah tersebut, ditinjau dari aspek struktur format penulisan, aspek kreativitas, dan aspek keterampilan proses sains yang terdapat dalam petunjuk praktikum. Sehingga didapatkan kesimpulan bahwa petunjuk praktikum yang selama ini digunakan tidak memberikan kesempatan kepada peserta didiknya untuk merancang eksperimen yang telah ditentukan. Tahapan kedua yaitu menganalisis kesesuaian kompetensi inti dan kompetensi dasar, yang bertujuan untuk menentukan indikator pencapaian kompetensi (IPK) yang akan menjadi acuan dalam mengembangkan petunjuk praktikum berbasis keterampilan proses sains. Dari kedua tahapan yang telah dilakukan maka dapat disimpulkan bahwa peserta didik memerlukan petunjuk praktikum yang mampu mengonstruksi pikiran dan mengaktifkan kinerja mereka, sehingga pendekatan Keterampilan Proses Sains menjadi pilihan dalam mengembangkan petunjuk praktikum yang sesuai dengan karakteristik kurikulum 2013. \u0000  \u0000This research aims to analyze the needs of Science Process Skills based Practical Instruction to achieve the ability to design experiments on the calor of reaction. This research was done to the students of class XI SMA Negeri 2 Tanjungpinang City. Research Variable includes the analysis of the needs of the learning materials and analysis of the suitability of the Core Competence (KI) and Basic Competence (KD). The type of research conducted is descriptive qualitative research. The first stages in this research is to analyze the needs of learning materials by comparing two practical instructions that had been implementing in the school, from the aspects of the structure of writing format, creativity, and science process skills embedded in practical instructions. The conclusion of this research that current practical instructions does not give an opportunity to the participants to design determined experiments. The second stage, namely analyzing the suitability of core competence and basic competence, which aims to determine the indicators of achievement of the competencies (GPA) which will be a reference in developing process skills-based teaching instructions science. Of the two stages that has been done then it can be concluded that learners need practical instructions to construct  thinking and and their performance, so the Science Process Skills approach is an option in developing practical instructio","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125972399","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 Ketebalan Elektroda Kerja TIO2/Grafit Terhadap Efisiensi Dye Sensitized Solar Cells (Dssc)","authors":"Nurhidayah Nurhidayah, Suwarni Suwarni, Sri Rahayu Alfitri Usna, M. F. Afrianto, Faizar Farid, Rady Purbakawaca, Frastica Deswadarni","doi":"10.32734/st.v2i2.493","DOIUrl":"https://doi.org/10.32734/st.v2i2.493","url":null,"abstract":"Telah dilakukan pembuatan Dye Sensitized Solar Cells (DSSC) dengan elektroda kerja yang terbuat dari campuran TiO2 dan 14% grafit yang selanjutnya ditulis sebagai TiO2:C14%.Koloid TiO2:C14% dideposisikan pada substrat kaca konduktif Fluorine Doped Tin Oxide(FTO) dengan metode sol-gel-spin coating pada kecepatan 500, 1000 dan 1500 rpm selama 50 detik. Kemudian lapisan ini direndam selama 24 jam dalam pewarna (dye) yang diambil dari ekstrak kelopak bunga rosella (hibiscus sabdariffa). Untuk mengkarakterisasi bahan pembentuk sel surya dilakukan uji XRD dan SEM.  Uji efisiensi sel surya tersensitasi zat warna dihitung dengan menggunakan rangkaian karakteristik kurva IV. Dari hasil yang diperoleh ketebalan tertinggi diperoleh pada kecepatan putar 500 rpm dengan ketebalan lapisan 0,9 mm dan efisiensi yang dihasilkan adalah 0,014%. \u0000  \u0000The production of Dye Sensitized Solar Cells (DSSC) has been done. The transparent electrode is made by mixing of TiO2 and graphite 14% (TiO2:C14%). TiO2:C14% colloid is deposited on a conductive glass substrate Fluorine Doped Tin Oxide (FTO) by spin coating method at 500, 1000 and 1500 rpm during 50 second. Then, the layer is soaked of 24 hours in dye taken from the extract of rosella. SEM and XRD characterization are performed for looking properties of DSSC materials. The efficiency of DSSC is calculated by using the characteristic circuit IV curve. The highest efficiency value is obtained when the thickest active layer (0,9 mm) at 500 rpm, the resulting efficiency is 0,014%.","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123271417","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 Modul Berbasis Kontekstual Pada Materi Koloid Di Sekolah Menengah Atas","authors":"Febiana Wulandari, Anna Juniar, Angeline Viska Ayurosalia, Arfiena Fitria Berutu","doi":"10.32734/st.v2i1.357","DOIUrl":"https://doi.org/10.32734/st.v2i1.357","url":null,"abstract":"Penelitian ini bertujuan untuk memperoleh modul berbasis kontekstual yang sesuai dengan kriteria penilaian  Badan Standar Nasional Pendidikan (BSNP) dan mengetahui hasil belajar siswa yang diajarkan menggunakan modul yang dikembangkan. Penelitian ini dilakukan di SMA Panca Budi Medan. Sampel dipilih secara purposive sampling untuk mengambil satu kelas yang digunakan sebagai kelas eksperimen. Jenis penelitian ini adalah penelitian pengembangan Research and Development (R and D) dengan One Group Pretest-Postest Design. Modul yang dikembangkan dinilai menggunakan kuesioner validasi dari BSNP, sedangkan data untuk hasil belajar siswa diperoleh dari tes yang menggunakan instrument tes objektif sebanyak 20 pertanyaan yang telah diuji validitasnya, realibilitas, tingkat kesulitan, daya beda dan distruktor. Berdasarkan penilaian validator ahli  ditunjukkan bahwa modul yang dikembangkan memenuhi kriteria  BSNP dengan kriteria yang valid dan tidak perlu direvisi. Hasil belajar kimia siswa menggunakan modul yang dikembangkan mendapatkan nilai yang lebih tinggi dari nilai kriteria ketuntasan minimum (KKM) berarti modul yang dikembangkan layak digunakan di SMA/MA. \u0000  \u0000The research we conducted aims to obtain contextual based modules that are in accordance to the assessment criteria of the National Education Standards Agency (BSNP), and then the learning outcomes of students taught using the modules developed will be measured. This research was conducted at Panca Budi High School Medan. The sample was selected by purposive sampling to take one class used as the experimental class. This type of research belongs to the type of Research and Development (R and D) with One Group Pretest-Postest Design. The modules developed were assessed using a validated questionnaire from the BSNP, while the data for student learning outcomes were obtained from tests using objective test instruments as many as 20 questions that had been tested for validity, reliability, difficulty level, different power, and destructors. Based on the expert validator's assessment it was shown that the module developed fulfilled the BSNP criteria with valid criteria and did not need to be revised. Chemistry learning outcomes of students using the developed module get a higher value than the minimum completeness criteria (KKM), meaning that the module developed is suitable for use in the high school level.","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125702600","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 Pendekatan Saintifik Dengan Menggunakan Media Macromedia Flash Terhadap Hasil Belajar Peserta Didik","authors":"Dina Ananda Hasibuan, Ramlan Silaban, M RonaRezky","doi":"10.32734/st.v2i1.356","DOIUrl":"https://doi.org/10.32734/st.v2i1.356","url":null,"abstract":"Penelitian ini bertujuan untuk  mengetahui keefektifan hasil belajar siswa melalui pendekatan saintifik dengan menggunakan media Macromedia Flash dan tanpa pendekatan saintifik dengan menggunakan media Macromedia Flash  pada topik Hidrolisis Garam. Populasi dalam penelitian ini adalah seluruh siswa kelas XI SMA Negeri 11 Medan tahun ajaran 2015/2016. Sampel yang digunakan pada penelitian ini diambil secara purposif sampling. Yang terdiri dari dua kelas, yakni satu kelas sebagai kelas eksperimen 1  melalui pendekatan saintifik menggunakan Macromedia Flash dan satu kelas sebagai kelas eksperimen 2 tanpa pendekatan saintifik dengan menggunakan Macromedia Flash. Masing-masing kelas terdiri dari 40 siswa. Hasil belajar siswa melalui pendekatan saintifik dengan menggunakan media Macromedia Flash lebih tinggi daripada hasil belajar siswa tanpa pendekatan saintifik menggunakan Macromedia Flash. \u0000  \u0000The purpose of this study was to compare the effectiveness of student learning through the scientific approach using Macromedia Flash with students learning without using a scientific approach using Macromedia Flash on the topic of Salt Hydrolysis. The population in this study were all students of class XI Medan 11 High School 2015/2016 academic year. The sample used in this study was taken by purposive sampling. Which consists of two classes, namely one class as the experimental class 1 through the scientific approach using Macromedia Flash and one class as the experimental class 2 without a scientific approach using Macromedia Flash. Each class consists of 40 Conclusions obtained are that student learning outcomes through a scientific approach using Macromedia Flash is higher than student learning outcomes without a scientific approach using Macromedia Flash.","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126540607","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 Bahan Ajar Reaksi Redoks Berorientasi PBL (Problem Based Learning)","authors":"Anna Juniar, Jonter Siregar, Albinus Silalahi, Retno Dwi Suyanti, Pravil Mistryanto","doi":"10.32734/ST.V2I1.354","DOIUrl":"https://doi.org/10.32734/ST.V2I1.354","url":null,"abstract":"Pengembangan Modul Reaksi Redoks berorientasi PBL (Problem Based Learning) telah dilakukan . Jenis penelitian ini adalah Research and Development (R and D) yang telah dimodifikasi sesuai kebutuhan. Penelitian ini meliputi empat tahap, yaitu analisis kebutuhan materi, perancangan dan pengembangan modul, standarisasi modul berdasarkan BSNP (Badan Standar Nasional Pendidikan) oleh Dosen dan Guru Kimia serta uji coba kepada 12 orang siswa kelas X-MIPA3 SMA Negeri 14Medan. Hasil penelitian menunjukkan bahwa modul yang dikembangkan memenuhi kriteria BSNP, dengan kelayakan isi (3,58), kelayakan bahasa sebesar (3,56); kelayakan penyajian (3,65); dan kelayakan kegrafikan 3,72 serta siswa memberi tanggapan sangat baik terhadap bahan ajar modul yang disusun dengan perolehan skor rata-rata angket sebesar 3,45. \u0000  \u0000Development of PBL-oriented Redox Reaction Modules (Problem Based Learning) has been implemented. This research belongs to the type of Research and Development (R and D) study that has been modified as needed. This study includes four stages, namely material requirements analysis, module design and development, module standardization based on BSNP (National Education Standards Agency) by Chemistry Lecturers and Teachers, and trials conducted on 12 students of class X-MIPA3 Medan 14 High School. The results of the study indicate that the module developed fulfills the BSNP criteria, with content eligibility (3.58), language feasibility of (3.56); presentation feasibility (3.65); and graphical feasibility of 3.72, and students gave very good responses to module teaching materials compiled with the acquisition of an average score of 3.45 questionnaires","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130557200","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":"Pemanfaatan Karbon Aktif Ampas Tebu dalam Mereduksi Asam Lemak Bebas (Free Fatty Acid) untuk Pemurnian Minyak Jelantah sebagai Biodiesel","authors":"Reka M. Sari, Agus Kembaren","doi":"10.32734/ST.V2I1.361","DOIUrl":"https://doi.org/10.32734/ST.V2I1.361","url":null,"abstract":"Pembuatan biodiesel telah berhasil dilakukan dengan pemurnian karbon aktif ampas tebu untuk mereduksi asam lemak bebas (free fatty acid) pada minyak jelantah. Karbon dari ampas tebu diaktivasi dengan H3PO4 pada suhu 400 oC dengan massa 10 g lalu digunakan sebagai adsorben dalam pemurnian minyak jelantah. Pengujian kualitas minyak sesuai SNI 01-2901-2006 dan berhasil menurunkan kadar ALB sebesar dari 4,16% menjadi 0,336% dan bilangan peroksida 6,99 mek/kg. Penambahan metanol pada minyak dengan perbandingan 1:6 serta katalis 1% menghasilkan biodiesel sesuai SNI 04-7182-2006 dengan bilangan asam sebesar 0,6731%, bilangan iod 57,3625% dan densitas biodiesel yaitu 0,8599 g/mL. Identifikasi senyawa pembentuk biodiesel dengan GC (Gas Chromatography) menghasilkan komposisi FAME oleat, linoleat dan palmitat yaitu 43,4181%, 10,5952%, 38,6358. \u0000  \u0000In this study, biodiesel has been successfully made by purifying the activated carbon of the sugar cane pulp to reduce free fatty acids in used cooking oil. The carbon from the pulp of sugar cane is activated with H3PO4 at a temperature of 400oC with a mass of 10 g and then used as an adsorbent in refining used cooking oil. Oil quality testing produced according to SNI 01-2901-2006 and succeeded in reducing ALB levels from 4.16% to 0.336% and 6.99 mek / kg peroxide. The addition of methanol to oil with a ratio of 1: 6 and 1% catalyst produced biodiesel according to SNI 04-7182-2006 with acid numbers of 0.6731%, iodine number 57.3625% and biodiesel density which was 0.8599 g / mL. Identification of biodiesel-forming compounds with GC (Gas Chromatography) resulted in compositions of FAME oleate, linoleic and palmitic respectively 43.4181%, 10.5952%, 38.6358.","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126570811","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":"Implementasi Model Pembelajaran Berbasis Masalah Menggunakan Powerpoint Materi Stoikiometri Untuk Menigkatkan Hasil Belajar Siswa","authors":"Frensi Hasanah, Mahmud Mahmud, R. Hikmi","doi":"10.32734/ST.V2I1.358","DOIUrl":"https://doi.org/10.32734/ST.V2I1.358","url":null,"abstract":"Tujuan penelitian ini yaitu, untuk mengetahui hasil belajar kimia pada siswa yng dibelajrkan dengan menerapkan model pembelajaran berbasis masalah dengan menggunakan media powerpoint lebih tinggi daripada siswa yang dibelajarkan dengan menggunakan konvensional pada materi Stoikiometri. Dalam penelitian ini populasinya yaitu seluruh siswa kelas X MIA SMA NEGERI 1 STABAT semester genap, tahun ajaran 2014/2015 sebanyak ±250 orang siswa, yang terdiri dari 6 kelas. Sedangkan sampel dalam penelitian ini sebanyak 2 kelas diambil secara purposive. Penelitian ini merupakan jenis eksperimental. Dari analisis data perhitungan diperoleh dari penelitian yang telah dilaksanakan, mengalami peningkatan hasil belajar kimia pada siswa yang dibelajarkan dengan menerapkan model pembelajaran berbasis masalah dengan menggunakan media powerpoint dengan hasil yang  lebih tinggi yaitu 83%, sedangkan pada siswa yang dibelajarkan dengan pembelajaran konvensional yaitu, 69%. Maka hasil pebedaan peningkatan hasil belajar siswa pada kelas eksperimen dengan kelas kontrol adalah 14%. \u0000  \u0000The purpose of this study is to find out the chemistry learning outcomes of students who are learning by applying a problem-based learning model using higher powerpoint media than students who are taught using conventional Stoichiometry lessons. This study employed experimental research that takes data from all students of class X MIA SMAN 1 STABAT in the even semester, 2014/2015 academic year as the population. There were about 250 students that consisted of 6 classes. While the samples in this study were two classes taken purposively. From the data analysis, it is known that there is an increase in student learning outcomes in chemistry subjects taught by applying a problem-based learning model using powerpoint with higher results of 83%, compared to students taught with conventional learning that is only 69%. Then the results of the improvement in student learning outcomes in the experimental class with the control class are 14%.","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121303193","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 Problem Based Learning Dengan Media Audio Visual dan Laboratorium Riil Materi Asam Basa Terhadap Hasil Belajar","authors":"R. Hikmi, Frensi Hasanah, Ani Sutiani","doi":"10.32734/ST.V2I1.360","DOIUrl":"https://doi.org/10.32734/ST.V2I1.360","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui perbedaan peningkatkan hasil belajar siswa  MAN 1 Stabat melalui penerapan model Problem Based Learning (PBL) berbantuan media audio visual dan laboratorium riil pada pokok bahasan Asam Basa. Metode yang digunakan dalam penelitian ini adalah eksperimen dan pengambilan sampel dilakukan secara random sampling. Hasil penelitian menunjukkan, untuk kelas eksperimen 1 diperoleh nilai rata-rata tes awal sebesar 31,11 dan nilai tes akhir adalah 83,94, sementara untuk kelas eksperimen 2 diperoleh hasil nilai rata-rata tes awal adalah 32,66 dan nilai tes akhir adalah 79,60. Hasil uji normalitas dan homogenitas tes awal dan akhir menunjukkan data kedua kelas berdistribusi normal dan homogen. Hasil uji t pihak kanan diperoleh thitung = 2,36 dan ttabel = 1,9994, sehingga thitung>ttabel yang berarti Ha diterima. Berdasarkan data tersebut, dapat disimpulkan bahwa adanya peningkatan hasil belajar siswa MAN 1 Stabat melalui model Problem Based Learning (PBL) berbantuan media audio visual dibandingkan hasil belajar siswa melalui model Problem Based Learning (PBL) berbantuan laboratorium riiil  pada pokok bahasan Asam Basa. \u0000  \u0000This study aims to determine the differences in improving student learning outcomes of MAN 1 Stabat who use the application of the Problem Based Learning (PBL) model assisted by real audio-visual and laboratory media on the subject of Base Acid. The method used in this study is an experimental method. Sampling is done by random sampling. The results showed that for the experimental class 1, the average pretest score was 31.11 and the post-test value was 83.94, while for the experimental class 2 the results of the pretest average were 32.66, and the post-test score was 79.60. The results of the normality and homogeneity test from the pretest and posttest showed that the data of the two classes were normally distributed and homogeneous. The results of the t-test are tcount = 2.36 and ttable = 1.9994 so that tcount> ttabel which means Ha is accepted. Based on these data, it can be concluded that there is an increase in student learning outcomes of MAN 1 Stabat through the Problem Based Learning (PBL) model assisted by audiovisual media compared to the Problem Based Learning (PBL) model assisted by clinical laboratories on the topic of Acid-Base.","PeriodicalId":117967,"journal":{"name":"Talenta Conference Series: Science and Technology (ST)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132437221","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}