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

{"title":"Sebuah Generalisasi Baru Barisan Fibonacci-Lucas","authors":"Musraini M Musraini M, R. Efendi, Rolan Pane, Endang Lily","doi":"10.32734/st.v2i2.478","DOIUrl":"https://doi.org/10.32734/st.v2i2.478","url":null,"abstract":"Barisan Fibonacci dan Lucas telah digeneralisasi dalam banyak cara, beberapa dengan mempertahankan kondisi awal, dan lainnya dengan mempertahankan relasi rekurensi. Makalah ini menyajikan sebuah generalisasi baru barisan Fibonacci-Lucas yang didefinisikan oleh relasi rekurensi \u0000B_n=B_(n-1)+B_(n-2),n≥2 , B_0=2b,B_1=s \u0000dengan b dan s bilangan bulat  tak negatif. Selanjutnya, beberapa identitas dihasilkan dan diturunkan menggunakan formula Binet dan metode sederhana lainnya. Juga dibahas beberapa identitas dalam bentuk determinan. \u0000  \u0000The Fibonacci and Lucas sequence has been generalized in many ways, some by preserving the initial conditions, and others by preserving the recurrence relation. In this paper, a new generalization of Fibonacci-Lucas sequence is introduced and defined by the recurrence relation \u0000B_n=B_(n-1)+B_(n-2),n≥2, with ,  B_0=2b,B_1=s                          \u0000where b and s are non negative integers. Further, some identities are generated and derived by Binet’s formula and other simple methods. Also some determinant identities are discussed.","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":"130597113","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 Model Dua-Tahap Pemrograman Stokastik untuk Persimpangan yang Padat","authors":"Risa Wara Elzati, Ihda Hasbiyati","doi":"10.32734/st.v2i2.482","DOIUrl":"https://doi.org/10.32734/st.v2i2.482","url":null,"abstract":"Masalah transportasi terjadi ketika tingkat arus masuk kendaraan melebihi laju arus keluar kendaraan di satu tempat. Berbagai faktor mendukung terjadinya masalah kemacetan, salah satunya persimpangan yang padat dan mengakibatkan keterlambatan kendaraan sehingga arus masuk tidak sesuai dengan arus keluar. Pengaturan aliran lalu lintas di persimpangan biasanya menggunakan sinyal lampu lalu lintas yang berfungsi untuk menghentikan aliran lalu lintas ke arah tertentu dan memungkinkan arus dari arah lain pergi. Penulis mengusulkan menggunakan pemrograman stokastik dua tahap untuk menghasilkan model baru dalam penjadwalan rencana waktu sinyal yang efisien untuk meminimalkan penundaan kendaraan yang diharapkan. \u0000  \u0000Transportation problems occur when the level of vehicle inflows exceeds the rate of vehicle outflow in one place. Various factors support the occurrence of congestion problems, one of which intersections are dense and result in vehicle delays so the incoming currents aren’t in accordance with the outflow. Traffic flow arrangements at intersections usually use traffic light signals that serve to stop traffic flow in certain directions and allowing currents from other directions to go. The authors propose using two-stage stochastic programming so as to produce new models in scheduling an efficient signal time plan to minimize expected vehicle delays. \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":"124440747","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":"Aktifitas Antioksidan Ekstrak Metanol Daun Benalu Duku Hijau (Dendrohtoe pentandara (L.) Miq) dan Merah (Scurrula ferruginea (Jack) Danser) dengan Metode DPPH","authors":"R. Hardiyanti, Lamek Marpaung, I. K. Adnyana, Partomuan Simanjuntak","doi":"10.32734/st.v2i2.504","DOIUrl":"https://doi.org/10.32734/st.v2i2.504","url":null,"abstract":"Uji aktivitas antioksidan yang dilakukan terhadap ekstrak methanol dari daun benalu duku hijau (Dendrophthoe pentandara (L.) Miq) dan daun benalu duku merah (Scurrula ferruginea (Jack) Danser) dengan menggunakan metode DPPH bertujuan untuk membandingkan aktivitas antioksidan antara kedua daun benalu duku yang berbeda warna tersebut. Daun benalu duku diekstrak hingga diperoleh ekstrak methanol. Hasil pengujian ekstrak methanol menunjukkan bahwa daun benalu duku hijau dan merah mempunyai nilai IC50 masing-masing 13.21 ppm dan 11.35 ppm. Hasil tersebut menunjukkan bahwa ekstrak methanol daun benalu duku hijau (Dendrophthoe pentandara (L.) Miq) bersifat lebih aktif sebagai antioksidan dibandingkan ekstrak methanol daun benalu duku merah (Scurrula ferruginea (Jack) Danser). \u0000  \u0000DPPH method was performed toevaluate the antioxidant activity of Dendrophthoepentandara (L.) Miq and Scurrulaferruginea (Jack) Danser. The leaves of each sample were extracted using methanol and the obtained extract was called as methanol extract. The leaves methanol extract ofDendrophthoepentandara (L.) Miq and Scurrulaferruginea (Jack) Dansershowed the IC50 value of 13.21 and 11.35 ppm, respectively. That result showed that the leaves methanol extract ofDendrophthoepentandara (L.) Miq was more active than Scurrulaferruginea (Jack) Danser.","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":"126506320","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 Diskriminan Pada Pengklasifikasian Berat Bayi Baru Lahir","authors":"Rahmadeni, Olivia Putri Yani","doi":"10.32734/st.v2i2.464","DOIUrl":"https://doi.org/10.32734/st.v2i2.464","url":null,"abstract":"Analisis diskriminan merupakan metode statistik untuk menguji perbedaan signifikansi antara dua kelompok yang dalam kasus ini antara berat bayi baru lahir secara normal dan abnormal. Metode fisher merupakan metode yang bertujuan untuk membentuk fungsi diskriminan dengan koefisiennya untuk menghasilkan hasil maksimal antar grup dan variasi grup. Berdasarkan kriteria WHO, berat bayi saat lahir dibagi dua yaitu rendah (≤2500gram) dan normal (≥2500gram). Dalam penelitian ini, hasil yang didapat bahwa fungsi diskriminan yang terbentuk: Berat bayi baru lahir = 0.017 usia ibu + 0.535 jumlah anak + 0.338 + 0.32 aborsi. Persentase determinasi dari fungsi diskriminan ialah 80.0% \u0000  \u0000Discriminant analysis is a statistical method used to test for significant differences between the two groups in this case is normal and abnormal newborns weight. The fisher method is a method that aims to form a discriminant function with its coefficients that produce maximum results between groups and group variations. Based on WHO Criteria, infant weight at birth is divided into two, namely low birth weight (≤2500gram) and normal birth weight (≥2500gram). in the research results obtained that discriminant function that is formed: New Baby Weight Born= 0.017 Mother Age + 0.535 Number of Children+ 0.338 Parity + 0.32 Abortion. Percentage of discriminant function determination is 80.0%.","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":"134320645","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":"Media Pembelajaran Berbasis Lectora Inspire pada Mata Pelajaran IPA Kimia untuk Kelas VII SMP/MTs","authors":"Herdini, Roza Linda, Nur Shafiani","doi":"10.32734/st.v2i2.527","DOIUrl":"https://doi.org/10.32734/st.v2i2.527","url":null,"abstract":"Penelitian ini bertujuan untuk mengembangkan media pembelajaran berbasis Lectora Inspire pada mata pelajaran ilmu kimia untuk kelas tujuh SMP. Desain Penelitian dan Pengembangan dengan model Plomp digunakan dalam penelitian ini. Ini terdiri dari empat fase; penyelidikan awal, desain, realisasi dan konstruksi, dan validasi, pengujian dan revisi. Penelitian ini dilakukan di Fakultas Keguruan dan Ilmu Pendidikan Universitas Riau. Objek penelitian ini adalah media pembelajaran Lectora Inspire. Data dikumpulkan dengan memvalidasi media pembelajaran berbasis Lectora Inspire ke tiga validator (ahli media dan ahli materi pelajaran) dan uji coba terbatas untuk guru dan siswa di SMP Negeri 4 dan SMP Babussalam Pekanbaru. Hasil penelitian menunjukkan skor rata-rata validator adalah 98,31% dan skor uji coba terbatas berdasarkan tanggapan kuesioner guru dan skor rata-rata siswa masing-masing 99,48% dan 96,67%. Hasil penelitian ini menunjukkan bahwa media pembelajaran berbasis Lectora Inspire pada mata pelajaran IPA kelas VII SMP valid dan dapat digunakan sebagai media pembelajaran. \u0000  \u0000This study aims to develop Lectora Inspire based learning media on chemical science subjects for the seventh grade of Junior High School. Research and Development design with Plomp model was used in this study. It’s consists of four phases; initial investigation, design, realization and construction, and validation, test and revision. The study was conducted at Faculty of Teacher Training and Education University of Riau. The object for this study is Lectora Inspire learning media. Data were collected by validating Lectora Inspire-based learning media to the three validator (media expert and subject matter experts) and limited trials for teachers and students at State Junior High School 4 and Babussalam Junior High School Pekanbaru. The results showed  average score of validator is 98.31% and score of limited trial based on questionnaire responses of teachers and students average score are 99.48% and 96.67% respectively. The results of this study indicated that Lectora Inspire based learning media on chemical science subject for the seventh grade of Junior High School were valid and can be used as a learning media.","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":"123834591","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":"Penerapan Model ADDIE pada Pengembangan Modul E-Learning dalam Pembelajaran Fisika","authors":"A. Halim, Ismul Huda, Tarmizi, Mustafa, Ibnu Khaldun","doi":"10.32734/st.v2i2.513","DOIUrl":"https://doi.org/10.32734/st.v2i2.513","url":null,"abstract":"Penerapan ICT dalam pembelajaran sains, khususnya pembelajaran fisika, tidak dapat dihindari baik berbentuk media berbasis android atau berbasis online (web). Ilmu fisika berisi konsep-konsep yang bersifat konkrit dan banyak juga bersifat abstrak, sehingga siswa memerlukan pemikiran yang mendalam untuk memahaminya. Dengan bantuan modul e-learning siswa dengan mudah dapat menemukan konsep abstrak menjadi riil dan pengulangan penjelasan dapat dilakukan dimana saja atau tidak tergantung pada waktu dan tempat. Dalam makalah ini akan dijelaskan secara ringkas dan jelas metode atau teknik yang lazim digunakan untuk mengembangkan modul e-learning dalam pembelajaran fisika. Pembahasan bersifat kajian teoritis dari beberapa literatur yang terkait langsung dengan pengembangan modul e-learning dalam pembelajaran sains, khususnya pembelajaran fisika. Klasifikasi kajian pengembangan modul e-learning dalam makalah ini didasarkan pada model ADDIE. Hasil kajian teoritis menunjukkan bahwa pengembangan modul e-learning diawali dengan tahap Analisis (analisis kebutuhan akan modul), Desain (dalam bentuk self-learning), Development (sesuai masukan atau saran dari pakar), Implementasi (pada jenjang pendidikan yang sesuai), dan Evaluasi (kelayakan dan tanggapan dari pemakai). Berdasarkan hasil kajian teoritis dapat disarankan kepada semua staf pengajar fisika di perguruan tinggi untuk menyiapkan materi perkuliahan dalam bentuk e-learning. Berdasarkan semua tahapan pengembangan modul e-learning yang agak sukar dilakukan adalah pengembangan evaluasi berbasis web (e-learning). \u0000  \u0000Implementation of ICT in science learning, especially physics learning, cannot be avoided from using of ICT either in the form of android based media or online based (web). Physics contains concrete concepts and many are also abstract, so students need deep thinking to understand them. With the help of e-learning module students can easily find the abstract concept into real and repetition of annotations can be done anywhere or not depending on the time and place. In this paper will be explained in a concise and clear method or technique commonly used to develop e-learning module in physics learning. The discussion is a theoretical study of several literatures that are directly related to the development of e-learning modules in science learning, especially physics learning. The classification of the study of e-learning module development in this paper is based on the ADDIE model. The result of the theoretical study shows that the development of e-learning module begins with the analysis phase (module requirement analysis), Design (in the form of self-learning), Development (according to expert input or suggestion), Implementation (at appropriate education level), and Evaluation (feasibility and responses from the user). Based on the results of theoretical studies can be recommended to all physics faculty in college to prepare lecture materials in the form of e-learning. Based on all stages of e","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":"123900513","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 Media Berbantukan Komputer Pada Mata Kuliah Ikatan Kimia Untuk Meningkatkan Kompetensi Calon Guru","authors":"B. Holiwarni, Erviyenni, Dewi Anggraini, Pratiwi Febrianti","doi":"10.32734/st.v2i2.518","DOIUrl":"https://doi.org/10.32734/st.v2i2.518","url":null,"abstract":"Penelitian ini bertujuan untuk mengembangkan dan mengimplementasikan media berbantukan komputer yang valid, praktis, dan efektif pada mata kuliah ikatan kimia. Metode penelitian yang digunakan adalah penelitian pengembangan (development research). Penelitian dilaksanakan dalam dua tahun dan terdiri dari tiga tahap, yaitu tahap analisis muka belakang, prototipe, dan implementasi. Data penelitian dikumpulkan melalui observasi kelas, wawancara dengan siswa, guru, pakar pendidikan kimia dan media pembelajaran, analisis hasil kerja mahasiswa, dan tes. Hasil penelitian tahun pertama menunjukkan bahwa media berbantukan komputer yang dikembangkan pada mata kuliah ikatan kimia telah memenuhi kriteria valid dari segi isi dan konstruksi. Media juga memenuhi kriteria praktis, yang mana mahasiswa dapat menggunakannya dalam mata kuliah ikatan kimia, tanpa kendala berarti. \u0000  \u0000This study aims to develop and implement computerized vaids that are practical and effective in chemical bonding courses. The research method used in research development. The study was conducted in two years and consisted of three stages, ie advance analysis phase of prototype dantasi. Research data collected through class observation, interview with student work, and test. First year research result shower that computer-assisted media developed in chemical bonding courses has met the valid criteria of content and construction. The media also meet the practical criteria, which students can use in subject of chemical ties without any significant constraints","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":"124352332","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":"Aplikasi LS sebagai Green Inhibitor Pembentukan Kerak Kalsium Karbonat (CaCO3)","authors":"Suharso, Eka Setiososari, Agung Abadi Kiswandono, Buhani, Heri Satria","doi":"10.32734/st.v2i2.503","DOIUrl":"https://doi.org/10.32734/st.v2i2.503","url":null,"abstract":"Pemanfaatan inhibitor alami untuk menghambat pembentukan kerak dari materi anorganik telah menjadi kebutuhan masa kini mengingat banyak inhibitor yang digunakan dalam industry tidak ramah lingkungan dan mahal. Pada penelitian ini, inhibitor alami dipelajari dari produk alami yang diberi nama inhibitor LS. Pengujian inhibitor LS dilakukan dengan metode eksperimen seeded pada suhu 90oC dan konsentrasi larutan CaCO3 0.050 M. Hasil menunjukkan bahwa seiring peningkatan konsentrasi inhibitor, semakin efektif juga kemampuan penghambatan terhadap pembentukan kristal CaCO3 yang diiringi dengan penurunan pH larutan. Dapat disimpulkan bahwa penambahan inhibitor LS dengan rentang konsentrasi 50-350 ppm dalam larutan CaCO3 0.050 M, mampu menghambat pembentukan kerat CaCO3 dengan persentase 27,78%. \u0000  \u0000The use of green inhibitors to inhibit scale formation of inorganic materials have become a necessity these days considering the many inhibitors are used in the industry are not environmentally friendly and expensive. In this research, it has been investigated the green inhibitors from natural products called LS Inhibitor.  Testing of LS inhibitor was performed by seeded experiment method at temperature of 90 ° C and concentration of CaCO3 growth solution of 0.050 M.  The results showed that The higher the inhibitor concentration added the greater the effectiveness of the inhibitor in inhibiting the formation of CaCO3 crystals accompanied by the decrease in pH of the solution.  It is concluded that the addition of LS inhibitor in the concentration range of 50-350 ppm in CaCO3 crystal growth solution at the concentration of 0.050 M is able to inhibit the scale formation of CaCO3 around 27-278 %. ","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":"125091909","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":"Penerapan Pbm Menggunakan Metode Blended Learning untuk Meningkatkan Keterampilan Berpikir Kritis dan Aktivitas Belajar Mahasiswa Pendidikan Fisika pada Matakuliah Biologi Dasar","authors":"R. Anggraini, T. Solfitri","doi":"10.32734/st.v2i2.557","DOIUrl":"https://doi.org/10.32734/st.v2i2.557","url":null,"abstract":"Penelitian ini bertujuan untuk meningkatkan keterampilan berpikir kritis siswa dan kegiatan belajar siswa pendidikan fisika dengan menerapkan model pembelajaran berbasis masalah (PBM) dengan metode blended learning. Metode blended learning diterapkan dengan mengintegrasikan pembelajaran tatap muka dengan pembelajaran online ke dalam sintaks pembelajaran PBM (langkah). Bentuk pembelajaran tatap muka dilakukan di dalam kelas, sedangkan bentuk pembelajaran online dilakukan dengan memanfaatkan fasilitas internet dan forum diskusi kelas online. Jenis penelitian adalah penelitian tindakan kelas (PTK) dengan metode penelitian deskriptif kuantitatif. Studi ini akan direncanakan dalam dua siklus. Setiap siklus terdiri dari empat tahap: perencanaan, melakukan, observasi, dan refleksi. Subjek penelitian ini adalah mahasiswa semester 1 fisika yang mengambil mata pelajaran biologi dasar dan dosen mata kuliah. Instrumen yang digunakan untuk mengumpulkan data adalah lembar tes berpikir kritis dan lembar observasi. Data hasil tes dilakukan dengan menghitung persentase berpikir kritis dan menentukan kriteria. Data kegiatan belajar yang diamati juga dihitung menggunakan rentang nilai yang muncul dan menentukan kriteria. Hasil penelitian menunjukkan bahwa persentase keterampilan berpikir kritis siswa pada siklus I adalah 52,12% (cukup kritis), sedangkan pada siklus II meningkat menjadi 63,27% (kritis). Kegiatan mengajar dosen pada siklus I dan siklus II adalah sama yaitu 36 (kategori baik). Aktivitas belajar siswa pada siklus I adalah 35 (kategori baik) dan pada siklus II yaitu 34 (kategori baik). Kesimpulan dari penelitian ini adalah penerapan pembelajaran berbasis pembelajaran (PBM) menggunakan metode blended learning dapat meningkatkan berpikir kritis dan aktivitas belajar siswa pendidikan jasmani dalam mata pelajaran biologi dasar. \u0000  \u0000This study aims to improve students' critical thinking skills and learning activities of physics education students by applying problem-based learning model (PBM) with blended learning method. The blended learning method is applied by integrating face-to-face learning with online learning into the PBM learning syntax (step). Form of face-to-face learning is done in the classroom, while the form of online learning is done by utilizing internet facilities and online class discussion forums. The type of research is classroom action research (PTK) with quantitative descriptive research method. This study will be planned in two cycles. Each cycle consists of four stages: planning, doing, observation, and reflection. The subjects of this research are physics semester 1 students who take basic biology subject and lecturer of course subject. Instruments used to collect data are critical thinking test sheets and observation sheets. The test result data is done by calculating the percentage of critical thinking and determining the criteria. The observed data of learning activity is also calculated using the range of values ​​that appear an","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":"122435209","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 Lembar Kegiatan Peserta Didik (LKPD) Berbasis Learning Cycle 5-E pada Pokok Bahasan Laju Reaksi","authors":"Elva Yasmi Amran, Erviyenni, Sri Wilda Albeta, Ratih Nurbintari","doi":"10.32734/st.v2i2.522","DOIUrl":"https://doi.org/10.32734/st.v2i2.522","url":null,"abstract":"Penelitian ini dilakukan untuk menghasilkan LKPD berbasis learning cycle 5-e pada pokok bahasan laju reaksi yang valid berdasarkan kelayakan isi, kebahasaan, kegrafisan, dan penyajian. Penelitian dilakukan dengan metode penelitian dan pengembangan R and D (Research and Development) dengan model 4-D.  Instrumen pengumpulan data pada penelitian ini adalah lembar validasi dan angket respon guru serta angket respon peserta didik. LKPD yang telah dikembangkan divalidasi oleh 2 orang validator yaitu dosen Pendidikan Kimia FKIP UR, kemudian diuji coba kepada guru dan 30 peserta didik dari dua sekolah di pekanbaru. Skor rata-rata validasi aspek kelayakan isi, kebahasaan, kegrafisan, dan penyajian terhadap LKPD yang dikembangkan masing-masing adalah  95,83%, 87,5%, 97,5%, dan 87,5% dengan rata-rata keseluruhan 92,08% (valid). Sementara dari uji coba terbatas pada guru dan peserta didik melalui angket diperoleh skor rerata guru 84,9% dan skor peserta didik 88,8% dengan kategori layak. \u0000  \u0000The purpose of this research has been to produce LKPD based on learning cycle 5-e on the subject of valid reaction rate based on feasibility of content, language, kegrafisan, and presentation. Research is done by research and development research and development (R and D) with 4-D model. Instrument of data collection in this research is validation sheet and questionnaire response teacher and learners. The LKPD that has been developed is validated by 2 validators namely the lecturer of Chemistry Education FKIP UR, then tested to the teacher and 30 students from two schools in Pekanbaru. The average scores of validation of feasibility aspects of content, language, kegrafisan, and presentation of LKPD developed were 95.83%, 87.5%, 97.5%, and 87.5%, respectively, with an overall average of 92, 08% (valid). While the trial is limited to teachers and learners through the questionnaire obtained the average score of teachers 84.9% and 88.8% of learner score with decent categories.","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":"131203795","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}