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All Journal JSME MIPA UNIMA Kubik BAREKENG: Jurnal Ilmu Matematika dan Terapan Jurnal Cendekia : Jurnal Pendidikan Matematika Journal on Education de Fermat : Jurnal Pendidikan Matematika Jurnal Sains Riset SOSCIED Jurnal Sosial Humaniora Sigli JURNAL AXIOMA : Jurnal Matematika dan Pembelajaran GAUSS: Jurnal Pendidikan Matematika Frontiers Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika KUBIK: Jurnal Publikasi Ilmiah Matematika Jurnal Riset dan Inovasi Pembelajaran MARISEKOLA: Jurnal Matematika Riset Edukasi dan Kolaborasi Edu Cendikia: Jurnal Ilmiah Kependidikan Juwara : Jurnal Wawasan dan Aksara Education Journal: General and Specific Research Jurnal Ilmiah Sains Khatulistiwa: Jurnal Pendidikan dan Sosial Humaniora Innovative: Journal Of Social Science Research Simpati: Jurnal Penelitian Pendidikan dan Bahasa Lemma: Letters of Mathematics Education Jurnal Kendali Teknik dan Sains Jurnal Riset Rumpun Ilmu Pendidikan (JURRIPEN) Jurnal Pendidikan, Bahasa dan Budaya Future Academia : The Journal of Multidisciplinary Research on Scientific and Advanced Jurnal Cendekia Ilmiah Jurnal Pendidikan dan Sosial Humaniora Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
James U.L. Mangobi
Universitas Negeri Manado, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Penerapan Model Problem Based Learning Dalam Pembelajaran Materi Perbandingan Trigonometri Eunike Priskila Lisade; James Uriel Livingstone Mangobi; Benidiktus Tanujaya
Jurnal Sosial Humaniora Sigli Vol 6, No 1 (2023): Juni 2023
Publisher : Universitas Jabal Ghafur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47647/jsh.v6i1.1413

Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar materi perbandingan trigonometri peserta didik yang di ajar menggunakan model Problem Based-Learning dan peserta didik yang di ajar menggunakan model Direct Instruction. Desain penelitian ini adalah Randomized Subjects Posttest Only Control Design. Penelitian ini dilaksanakan di SMA Negeri 1 Tamako pada semester genap tahun ajaran 2022/2023. Subjek dalam penelitian ini di ambil 2 kelas yaitu kelas X 2 sebagai kelas eksperimen dan kelas X 3 sebagai kelas kontrol. Pengumpulan data dilakukan dengan memberikan tes berupa soal pada kedua kelas setelah diberi perlakuan. Data hasil penelitian dianalisis menggunakan statistik uji-t dan hasil perhitungan menunjukkan bahwa nilai     . Karena nilai  maka tolak . Dengan demikian dapat disimpulkan bahwa hasil belajar materi perbandingan trigonometri peserta didik kelas eksperimen lebih tinggi dari hasil belajar peserta didik kelas kontrol. Kata kunci: perbandingan trigonometri, model Problem Based-Learning, model Direct Instruction.
Welch-Powell Algorithm Implementation In Compiling Lecture Schedules In The Mathematics Education Study Program, Manado State University Fernando Febrianto Kawatu; James U. L. Mangobi; Vivian E. Regar
Jurnal Kendali Teknik dan Sains Vol. 1 No. 2 (2023): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i2.13

Abstract

This study aims to compile a Lecture Schedule at the Mathematics Education Study Program, Faculty of Mathematics Natural and Earth Sciences Manado State University using the Welch-Powell Algorithm. The scheduling of lectures at the Mathematics Education Study Program, Faculty of Mathematics and Natural Sciences, Manado State University often collides because several lecturers have different numbers of courses and credit rights. This it can be seen that the method of preparing lectures used is still not effective and efficient. Preparation of a course schedule is an action taken so that time can be managed as effectively and efficiently as possible. The preparation of this lecture schedule will use a simple graph with input data, namely the number of lecturers, number of courses, credits for each course, days used in the week, time slots and number of classes used. After getting the input data, point coloring is carried out in coloring on the graph using the Welch-Powell Algorithm assisted by MATLAB software to get an effective and efficient class schedule. Lecture Schedule Arrangement in the Mathematics Education Study Program, Department of Mathematics, Faculty of Mathematics, Natural and Earth Sciences, Manado State University using the Welch-Powell Algorithm produces a schedule that does not collide, so that the Welch-Powell Algorithm can help prepare an effective and efficient class schedule .
Application of the Project Based Learning Model in Pythagorean Theorem Learning Fauzi Virgiawan Lahinta; James U. L. Mangobi; Derel F. Kaunang
Innovative: Journal Of Social Science Research Vol. 3 No. 3 (2023): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v3i3.2455

Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar matematika siswa kelas VIII MTs Negeri 1 Bitung pada materi teorema phytagoras. Metode yang digunakan adalah eksperimen semu. Rancangan penelitian yang digunakan adalah pre-test and post-test one group design. Subjek penelitian yaitu 20 orang siswa kelas VIII.A yang diajarkan menggunakan model PjBL dan 20 orang siswa kelas VIII.C yang diajarkan menggunakan model DI. Penelitiannini menggunakannrancangan penelitian berbentuk pretest-posttest control grouppdesign. Dari penelitian ini diperoleh hasil pretest-posttest kemudian dilakukan uji normalitas dan uji homogenitas sebelum dilakukan uji hipotesis. Hasil uji normalitas diperoleh Lhitung = 0,1238 < Ltabel = 0,1920 berarti data skor pretest-posttest kelas eksperimen berdistribusi normal, sedangkan hasil uji normalitas kelas kontrol diperoleh Lhitung = 0,1863< Ltabel = 0,1920 yang berarti data skor pretest-posttest kelas kontrol berdistribusi normal. Hasil uji homogenitas diperoleh Fhitung = 1,250082 < Ftabel = 2,168252 sehingga terima H0. Jadiivarians dari kedua kelas, yaitu kelasseksperimen dan kelasskontrol adalah homogen. Hasilluji hipotesis dengan taraf nyata α=0,05 diperoleh thitung = 7,148892 > ttabel = 1,685954. Dengan demikian dapattdisimpulkan bahwaarata-rata hasillbelajar siswa yang diajarkannmenggunakan model PjBL lebih tinggi daripada rata-rata hasillbelajar siswa yang diajarkannmenggunakan model DI.
Perbedaan Hasil Belajar Materi Bangun Ruang Sisi Datar Siswa yang Menggunakan Model Problem Based Learning dengan Model Direct Instruction di SMP Negeri 2 Langowan Stevanli Tatia; James U. L. Mangobi; Ontang Manurung
Journal on Education Vol 6 No 1 (2023): Journal On Education: Volume 6 Nomor 1 Tahun 2023
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i1.4378

Abstract

This research aims to determine the differences in student learning outcomes in the material Building Flat Side Spaces using the Problem Based Learning model and the direct instruction model, in this case the differences in student learning outcomes are seen from the average value. The type of research used is comparative with a quasi-experimental method (quasi experiment), and the research design used is Posttest Only Control Design. This research was carried out at SMP Negeri 2 Langowan. The research subjects were 26 students in class VIII B as the experimental class who were given the Problem Based Teaching model treatment and 26 students in class VIII C as the control class who were given the Direct Instruction model treatment. The average posttest result for the experimental class was 84.73 while for the control class it was 70.07. The results of hypothesis testing using the t-test concluded that the average learning outcomes of students taught using the Problem Based Learning model were more than the average learning outcomes of students taught using the Direct Instruction model.
PENERAPAN MODEL PROBLEM BASED LEARNING PADA PEMBELAJARAN PERSAMAAN GARIS LURUS DI KELAS VIII SMP NEGERI 2 TAHUNA Alfraldo Lahaube; James U.L Mangobi; Derel F. Kaunang
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 4 No. 2 (2023): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v4i2.346

Abstract

This study aims to determine the average difference in the learning outcomes of straight-line equations material for students who are taught using the Problem Based-Learning model and the average learning outcomes for straight-line equations material for students who are taught using the Direct Instruction model. The design of this research is the Posttest Only Control Design. This research was conducted at SMP Negeri 2 Tahuna in the even semester of the 2022/2023 academic year. The subjects in this study were taken into 2 classes, namely class VIII B as the experimental class and class VIII C as the control class. Data collection was carried out by giving tests in the form of questions to both classes after being given treatment. The research data were analyzed using t-test statistics and the calculation results showed that the t_count=5.48 > t_table=1.68. Because the value of t_count > t_table then reject H0. Thus it can be concluded that the average student learning outcomes straight line equation material experimental class is more than the average student learning outcomes control class
OPTIMASI MATEMATIS KEUNTUNGAN HOME INDUSTRY PIA IBU SANDRA DI TOMBATU UTARA Gabriel E. W. Mosey; James U. L. Mangobi; Marvel G. Maukar
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 4 No. 2 (2023): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v4i2.376

Abstract

In the industrial sector, problems are often found in optimizing production results in order to obtain maximum profits. Pia home industry Mrs. Sandra has a problem in maximizing profits, namely finding solutions to produce pia with the optimal amount. The purpose of this study was to determine the amount of production and optimal profit obtained in the production of pia in the home industry using the branch and bound method and to determine the results of the sensitivity analysis to changes in production components. The results of the analysis show that using the branch and bound method, the home industry pia Mrs. Sandra gets an optimal profit of Rp. 2,078,557 per month by producing 1,666 pia chocolate, 1,041 pia temo, and 800 pia peanuts per month. The results of the sensitivity analysis show that profits will remain in optimal conditions if Mrs. Sandra's pia home industry follows the changes that occur in production components based on the upper bound and lower bound according to the output produced using Lingo 19.0 software
SEIR Model of Dengue Hemorrhagic Fever with the Life Stage Structure of the Aedes albopictus Mosquito James U.L. Mangobi; Santje Matulende Salajang; Cori Pitoy
Jurnal Ilmiah Sains Volume 23 Nomor 2, Oktober 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jis.v23i2.48235

Abstract

Dengue Hemorrhagic Fever (DHF) is an acute febrile illness caused by the dengue virus. This virus belongs to group B arthropod-borne viruses (Arboviroses) of the genus Flavivirus, which has four serotypes, namely Dengue I, Dengue II, Dengue III, and Dengue IV. Dengue virus is transmitted by Aedes sp. The SEIR model studied places the Aedes albopictus mosquito as the main vector. Many DHF cases are caused by this mosquito because it has a larger coverage area and is more difficult to control. All Aedes mosquito species have four life stages, namely: (1) egg, (2) larva, (3) pupa, and (4) adult. A stage-structured model was chosen because Ae. albopictus has varying rates of development and mortality at different stages. This model study includes determining the fixed point, determining the basic reproduction number R0, analyzing the stability of the fixed point, and simulating the population dynamics of dengue virus transmission. This model indicates the presence of endemics in an area for certain parameter values. This model produces a disease-free equilibrium, or DFE, which will be stable when R0 < 1, otherwise unstable when R0 > 1. The dynamic results for each human population (susceptible, exposed, infected, and cured) through observations in numerical simulations are influenced by the selection of the R0 value. The value of R0 is influenced by the mosquito death rate parameter and the average bite rate of infected mosquitoes. Population dynamics simulations show that an increase in the death rate of mosquitoes will reduce the number of humans exposed to them. In addition, an increase in the average number of infected mosquito bites will increase the number of humans exposed. Changes in the number of humans in each population tend to be different for each increase in the mosquito mortality rate or for each increase in the average number of infected mosquito bites.
Pengaruh Minat Belajar dan Kemampuan Pemecahan Masalah terhadap Hasil Belajar Siswa pada Materi Aritmetika Sosial Natalia C. Tumbel; Vivian E. Regar; James U.L. Mangobi
MARISEKOLA: Jurnal Matematika Riset Edukasi dan Kolaborasi Vol. 4 No. 1: April 2023
Publisher : Jurusan Matematika FMIPA Universitas Negeri Manado

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

Abstract

Penelitian ini bertujuan untuk meneliti pengaruh 1) Minat belajar terhadap hasil belajar siswa pada materi aritmetika sosial, 2) Kemampuan pemecahan masalah terhadap hasil belajar siswa pada materi aritmetika sosial, 3) Minat belajar dan kemampuan pemecahan masalah secara bersama-sama terhadap hasil belajar siswa pada materi aritmetika sosial. Penelitian ini menggunakan metode survei dengan pendekatan kuantitatif. Populasi dalam penelitian ini adalah siswa kelas VII SMP Negeri 1 Tumpaan. Teknik pengambilan sampel menggunakan simple random sampling dengan jumlah sampel 40 siswa. Hasil penelitian menunjukkan bahwa 1) Minat belajar memiliki pengaruh positif yang signifikan terhadap hasil belajar siswa pada materi aritmetika sosial dengan model regresi  dan ditunjukkan dengan hasil  atau  dengan kontribusi minat belajar terhadap hasil belajar siswa pada materi aritmetika sosial sebesar 36,12%. 2) Kemampuan pemecahan masalah memiliki pengaruh positif yang signifikan terhadap hasil belajar siswa pada materi aritmetika sosial dengan model regresi  dan ditunjukkan dengan hasil  atau  dengan kontribusi kemampuan pemecahan masalah terhadap hasil belajar siswa pada materi aritmetika sosial sebesar 38,68%. 3) Minat belajar dan kemampuan pemecahan masalah memiliki pengaruh positif yang signifikan terhadap hasil belajar siswa pada materi aritmetika sosial dengan model regresi  dan ditunjukkan dengan hasil  atau  dengan kontribusi minat belajar dan kemampuan pemecahan masalah pada materi aritmetika sosial sebesar 54,61%. Berdasarkan hasil penelitian ini disimpulkan bahwa minat belajar dan kemampuan pemecahan masalah secara bersama-sama mempengaruhi hasil belajar siswa pada materi aritmetika sosial.
Differences in Learning Outcomes of Class VIII Students of SMP Negeri 3 Tondano on The Material of Building Flat Side Spaces Given the Implementation of The PjBL Model Sania Veolina Br Ginting; James U. L. Mangobi; Ontang Manurung
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.5897

Abstract

This study investigates the disparities in students' mathematical learning achievements when using the Flat-Side Building material in conjunction with the PjBL model compared to students who use the DI model. This study employs an experimental research approach utilizing a post-test-only control group design. The participants in this study consisted of two groups: an experimental group, comprising 25 students from class VIII-C, and a control group, comprising 24 students from class VIII-B at SMP Negeri 3 Tondano for the academic year 2023/2024. The selection of participants was done randomly from the two classes. The post-test research yielded an average score of 79.44 for the experimental class and 75.0208 for the control class. The hypothesis test analysis results indicate that the value of tcount is 2.302 and the value of ttable is 1.678. Since the value of tcount is greater than the value of ttable, we can infer that the null hypothesis (H0) is rejected, and the alternative hypothesis (H1) is accepted. This study determines that there is a discernible disparity in student learning outcomes when the subject of Building Flat Side Spaces is taught utilizing the Project-based Learning (PjBL) model as opposed to the Direct Instruction (DI) model in the eighth grade of SMP Negeri 3 Tondano.
Penerapan Model PBL Dalam Pembelajaran Matematika Materi Bangun Datar Segi Empat Dan Segitiga Millenia Cruisita Lukas; James U.L. Mangobi; Murni Sulistianingsih
Journal on Education Vol 6 No 4 (2024): Journal on Education: Volume 6 Nomor 4 Mei-Agustus 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i4.6396

Abstract

Application of the PBL Model in Mathematics Learning Material on Rectangular and Triangular Figures. Mathematics Department. Faculty of Mathematics, Natural and Earth Sciences. Manado State University. Tondano 2024. Thesis. This research examines the differences in the learning outcomes of rectangular and triangular shapes for students who received the Problem-Based Learning model treatment and those who received the Direct Instruction model treatment at SMP Negeri 2 Tondano. The method used is quasi-experimental. The research design used was Posttest-only Control Group Design. The research subjects were 15 class VII-C students who received the PBL model treatment and 15 class VII-D students who received the DI model treatment. From this research, data was obtained in the form of learning results, and normality tests and homogeneity tests were carried out before hypothesis testing. The results of the normality test in the experimental class were obtained Lcount = 0.1475 < Ltabel = 0.2200, so the learning result data for the experimental class was normally distributed. Meanwhile, the normality test results in the control class were obtained Lcount = 0.0924 < Ltable = 0.2200, so the control class learning outcomes data were normally distributed. The homogeneity test results obtained Fcount = 1.0457 < Ftable = 2.4837, so the variance of the two classes is homogeneous. The results of hypothesis testing with a real level of α=0.05 obtained tcount = 1.8125 > ttable = 1.7011. Thus, it can be concluded that the average learning outcomes of students who received the PBL model treatment were higher than those of students who received the DI model treatment.
Co-Authors Alfraldo Lahaube Andra Christine Tombokan Anetha L.F. Tilaar Annisa Ibrahim Arlen R. Maneking Asti Asti Ayu F. Nikiulu Bangki, Nindy Titania Benidiktus Tanujaya Beslar, Janet Friska Bimbanaung, Sofian S. Christy Genoveva Matialo Damai, I W. Derel Filandy Kaunang Deyvita Tanor Diawang, Meilani A. Dollydia Mart Sasauw Ermita Ermita Eunike Priskila Lisade Fauzi Virgiawan Lahinta Fera Sumodiharjo Fernando Febrianto Kawatu Fernando Febrianto Kawatu Gabriel E. W. Mosey Gia Mokoginta Goguyu, Irfan Gosal, Militia Jeane Jenifer Grafi Lonto Gunawan, Shintia D. Harmelita Halean Imanuel Supit Watung Imanuel Supit Watung Jorry F Monoarfa Kaawoan, Lyke Kaunang, Derel F Kaunang, Josua Joseph Bergkam Kenny E. F. Bawoleh Kodongan, Gidieon Romario Kondoahi, Riani Christina Lakumani, Novlin A. Lasut, Meicy Maria Lumanaw, Joshua Apriano Lumansi, Frids M. M. Salajang, Santje Mandagi, Rinai Zita Mandey, Amelia Luisa Maningide, Meivilia Inke Mardino M. Maloky Marvel G. Maukar Maukar, Marvel Grace Meifi Anjelina Rumenta Millenia Cruisita Lukas Misel Tambariki Modeong, Masni Momongan, Jeremia Momongan, Novita Murni Sulistyaningsih Natalia C. Tumbel Nelwan, Julivky Nofanti Yustina Noper Pamula Pangemanan, Altje S. Pantow, Tesalonika Angely Pascoal, Arantica Vellycia Jesica Philotheus E. A. Tuerah Philotheus E. A. Tuerah Pilendatu, Citra Pitoy, Cori Poluan, Marsela M. Regar, Vivivan Eleonara Riani Kondoahi Rori, Deais Nadya Debora Rosiah J. Pulukadang Rotti, Helga V. Runtu, V. J. Sambuaga, O T Sania Veolina Br Ginting Santje M. Salajang Sasamira, Indriyani Selfie L. Kumesan Sengkey, Dwi Jeanita Siby, Rishadewi Stevanli Tatia Suliasti Nevaria Martelu Sumendap, Yohana F. Sundah, Andrew G. Temo, Falentino Varlina Fani Rantung Victor R. Sulangi victor Sulangi Viki A. Sanggor Viki A. Sanggor Vivian E. Regar Vivian E. Regar Wuwumbene, Megi E. Yunike Manopo Yustika Sariamas