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Dokri Gumolung
Universitas Negeri Manado
Agriculture, Biological Sciences & Forestry Chemistry Education

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Pengaruh Penggunaan Simulasi Virtual Laboratorium PhET (Physics Education Technology) Terhadap Hasil Belajar Siswa Pada Materi Geometri Molekul di MAN 1 Bitung Puja Ika Abrianingsih Ritonga; Dokri Gumolung
Oxygenius Journal Of Chemistry Education Vol 3 No 2 (2021): Oxygenius: Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v3i2.288

Abstract

This research to see the side-effect of using virtual simulation media PhET (Physics Education Technology) laboratory on student learning towards in molecular geometry at MAN 1 Bitung. PhET is a form of virtual laboratory simulation with observation or experimental activities using software conducted by a computer or mobile phone. This research was a Pretest-Postest Control Group design with a 10th grade Mathematics and Natural Sciences students which is divided two groups they are, the control group and experimental group of 15 students each. The tests carried out to prove the hypothesis were carried out by t-test with the results of ttable = 2.04 and the value of tcount = 2.59. In this case tcount > ttable then, H1 accepted i.e. the average value of the experimental group learning result, morehigher than the control group. The results showed that, the PhET virtual laboratory simulation has a side-effect to students learning results. to measuring how much the side-effect is that, the result of simple with the results of the regression equation is regression had also won three other that is Y=0.6542x 27.26 that indicates who had a positive effect with a correlation as 0.72 correlation in the rate of the strong relationship and value of the coefficient of determination as much as 0,521 or Influental as much as 52,1℅.
Korelasi Model Pembelajaran Student Team Achievement Division (STAD) Terhadap Hasil Belajar Siswa Pada Materi Konsep Asam Basa Fladi Rivera Kalubota; Dokri Gumolung; Joice D. S. Caroles
Oxygenius Journal Of Chemistry Education Vol 3 No 1 (2021): Oxygenius: Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v3i1.267

Abstract

This study aims to determine how much the correlation value in the use of the learning model Studen Team Achievement Division (STAD) on student learning outcomes. The steps of the STAD learning model, namely: 1) convey learning objectives and motivate students, 2) organize students into study group consisting of 4-6 people, 3) convey information, 4) guide groups to work and study, 5) elevate students learning outcomes, 6) to give appreciation. This research wash conducted at SMA Negeri 5 Halmahera Utara in the even semester of the 2019-2020 school year. The sample used was 20 students of class XI-MIPA 1. Data collection technique using students attitude questionnaires and posttest questions. The results of the study a correlation coefficient value of 0.731, the value of the determinant coefficient of 53.44%. Score tcount > ttable (4.537 > 1.73406) so that there is a significant influence between the STAD learning model and student learning outcomes on the acid-base concept material.
Studi Kelayakan Penuntun Praktikum Asam Basa Berbasis Bahan Lingkungan Menggunakan Model 3-D Dan Penerapan Metode Inkuiri Terbimbing Untuk Meningkatkan Hasil Belajar Siswa SMA Negeri 1 Tenga gerry lumolos; Dokri Gumolung; Joice Caroles
Oxygenius Journal Of Chemistry Education Vol 1 No 2 (2019): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (577.155 KB) | DOI: 10.37033/ojce.v1i2.87

Abstract

Practicum guides are printed teaching materials that students can use in the learning process. This development research aims to determine the feasibility of an acid base-based practicum guide for environmental materials with a 3-D model and to improve student learning outcomes through practicum activities and the application of guided inquiry methods. The subject of this research was class XI IPA 1 at SMA Negeri 1 Tenga. The feasibility test for large groups has an average percentage of 88.24% which means that this practical guide is suitable for use with valid qualifications. Student learning outcomes using post test scores with the technique of statistical analysis of one sample t-test (one sample t-test). The results of the one-sample t-test hypothesis at a level of α = 5% were obtained tcount = 4.604> ttable = 1.708. The results of this study indicate that the guidelines for acid-base-based practicum for environmental materials are appropriate to be used in chemistry learning, and the use of acid-based practicum guides for environmental materials with the application of guided inquiry methods can improve student learning outcomes in acid-base material
Pengaruh Penerapan Strategi Pembelajaran REACT (Relating, Experiencing, Applying, Cooperating, dan Transferring) Terhadap Hasil Belajar Siswa Pada Materi Konsep Asam Basa Alfath Fitrilia Taraufu; Dokri Gumolung; Joice Caroles
Oxygenius Journal Of Chemistry Education Vol 2 No 2 (2020): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v2i2.177

Abstract

Penelitian ini bertujuan untuk mengetahui besarnya pengaruh penerapan strategi pembelajaran REACT terhadap hasil belajar siswa pada materi konsep asam basa menggunakan konteks kimia. Penelitian ini dilaksanakan di SMA Negeri 1 Tondano pada tahun ajaran 2019/2020 di kelas XI IPA 1 dengan jumlah siswa sebanyak 23 orang. Materi konsep asam basa yang diajarkan di kelas XI IPA 1 dikaitkan dengan kehidupan sehari-hari. Hasil pengolahan data hubungan antara nilai angket dan posttest menunjukan respon positif dalam pembelajaran menggunakan strategi pembelajaran REACT. Data hasil penelitian berupa angket dan posttest dianalisis melalui uji hipotesis yaitu uji regresi sederhana dan uji korelasi product moment. Uji regresi sederhana menunjukan bahwa semakin tinggi sikap siswa terhadap strategi pembelajaran REACT (X) maka semakin tinggi hasil belajar siswa (Y), hal ini menunjukan adanya pengaruh variabel X (sikap) dan variabel Y (hasil belajar). Hasil uji korelasi product moment diperoleh nilai rxy yaitu 0,6466 yang menunjukan tingkat hubungan yang kuat. Hasil koefisien penentu untuk mengetahui pengaruh pembelajaran REACT terhadap hasil belajar diperoleh sebesar 41,82%. Dari hasil yang diperoleh dapat dilihat bahwa terdapat pengaruh penerapan strategi pembelajaran REACT terhadap hasil belajar siswa pada materi konsep asam basa menggunakan konteks kimia.
Pengaruh Model Process Oriented Guided Inquiry Learning (POGIL) Terhadap Hasil Belajar Siswa Pada Materi Titrasi Asam Basa Di SMA Negeri 1 Kakas Kabupaten Minahasa Ratih Anita Memah; Sanusi Gugule; Dokri Gumolung
Oxygenius Journal Of Chemistry Education Vol 2 No 1 (2020): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v2i1.140

Abstract

This study aims to determine the effect of POGIL learning models on student learning outcomes on acid-base titration subject. This research was conducted in class XI MIPA 2 and XI MIPA 3 in SMA Negeri 1 Kakas. The method used is an experimental method with a post-test only control design research design. The research sample consisted of 30 students, who were randomly drawn. The experimental class uses the POGIL method, the control class uses conventional learning. Student learning outcomes data obtained from post-test scores. Analysis of research data shows that there are differences in the average value of student learning outcomes of the experimental class taught by using the POGIL method and the average value of the learning outcomes of control class students who are taught by using conventional learning on mole concept material. Data analysis using t-test at a significant level α = 0.05. Statistical analysis of student learning outcomes obtained tcount > ttable or 3,078 > 2,048. So it can be concluded that there is a positive influence between student learning outcomes using the POGIL method and student learning outcomes using conventional learning on acid-base titration subject.
Pembelajaran Dalam Jaringan (Daring) Terhadap Hasil Belajar Siswa Pada Materi Larutan Elektrolit Dan Non Elektrolit Selama Masa Pandemi COVID-19 Lauren Cornelia Agatha; Dokri Gumolung; Abdon Saiya
Oxygenius Journal Of Chemistry Education Vol 3 No 1 (2021): Oxygenius: Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v3i1.275

Abstract

The purpose of this study was to determine the magnitude of the effect of online learning on student learning outcomes in during the COVID-19 pandemic. This research was conducted in class X IPA SMA N 1 Tondano in the 2020/2021 academic year. A total of 25 students of class X IPA 1 were assigned as research samples. This study uses an experimental method with a One-Shot Case Study design. The results of this study consist of two data, namely questionnaire data for assessing student attitudes and post-test as an assessment of student learning outcomes which are then analyzed using correlation regression, and the regression equation obtained was Y = 9.5565 + 0.9073 x. The regression equation shows that the higher the student's attitude score (variable X), the higher the student's (variable Y). From the Product moment correlation test, it is found that the correlation coefficient (rxy) is 0.6599, which proves that the X and Y variables have a strong relationship. To calculate the effect of student attitudes on online learning on learning outcomes, it is calculated through the determinant coefficient formula, and it is found that the magnitude of the influence of student attitudes on online learning on learning outcomes is 43.55%. While the remaining 56.45% is influenced by other variables in the form of distractions and obstacles during online learning.
Pengembangan Video Pembelajaran Materi Ikatan Kimia Dengan Model ADDIE Sebagai Penunjang Pembelajaran Di Masa Pandemi COVID-19 Meylin Kawete; Dokri Gumolung; Anderson Aloanis
Oxygenius Journal Of Chemistry Education Vol 4 No 1 (2022): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v4i1.374

Abstract

The purpose of this study was to develop a Learning Video for Chemical Bonding Materials with the Addie Model as Learning Support during the Covid-19 Pandemic. This research is research and development (Research and Development). This research is a research that refers to the ADDIE model (Analysis, Design, Development or Production, Implementation or Delivery and Evaluations). By following the fifth stage of the ADDIE model, because this is a Video Development research, this research only reaches the fourth stage, namely the Implementation stage. Data collection techniques in this study used a Validation Questionnaire (validation of media experts and validation of material experts) and Student Response Questionnaires. The results of the first material expert validation are included in the "very feasible" criteria with a percentage of 80%. The results from the second validation questionnaire are included in the 'very feasible' criteria with a percentage of 100%, the results from the first media expert validation questionnaire with the 'very feasible' criteria with a percentage of 95.12%, the results from the second validation questionnaire are included in the 'very feasible' criteria with a percentage 86.66% and the results of the student response questionnaires are included in the "very feasible" criteria with a percentage of 90%. Learning videos are declared very suitable for use in the learning process.
Efektivitas Model Pembelajaran Flipped Classroom Berbantuan Google Classroom Terhadap Hasil Belajar Siswa Kelas X SMK Negeri 1 Biaro Theresa Sisilia Tindige; Dokri Gumolung
Oxygenius: Journal Of Chemistry Education Vol 4 No 2 (2022): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v4i2.503

Abstract

The aim of the study was to determine the effectiveness of the Flipped Classroom Learning Model Assisted by Google Classroom on the Learning Outcomes of Class X Students of SMK Negeri 1 Biaro. This research was conducted in class X Fisheries at SMK Negeri 1 Biaro in the 2022/2023 academic year. A total of 22 students of Class X Fisheries were selected as the research sample. Based on the N-Gain test and obtained results with an average value of 0.739 which is included in the high criteria and the N-Gain score of 73.9% is included in the criteria of being quite effective. Thus it can be concluded that the Flipped Classroom Learning Model Assisted by Google Classroom effectively influences the Learning Outcomes of Class X Students of SMK Negeri 1 Biaro.
Co-Authors Abdon Saiya Alfath Fitrilia Taraufu Anderson Arnold Aloanis Ardi Kapahang Dian Herlinda Octorina Howan Djefry Tani Edi Suryanto Fladi Rivera Kalubota gerry lumolos Ilevena Rolima Josef Joice Dorsila Susana Caroles Lauren Cornelia Agatha Mamuaja, Christin Meiske Naomi Mamuaja Meylin Kawete Olivia Indra Moray Puja Ika Abrianingsih Ritonga Ratih Anita Memah Sanusi Gugule Theresa Sisilia Tindige