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All Journal Edumatsains Indonesian Community Journal Brillo Journal Jurnal Pengabdian Pada Masyarakat Cendikia Pendidikan

Kerdid Simbolon

Universitas Kristen Indonesia

Author-ID : 3429956

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Articles

Model Pembelajaran Materi Matematika secara daring di SMA Jitu Halomoan Lumbantoruan; Kerdid Simbolon; Risma Uly Manalu; Stevi Natalia
I-Com: Indonesian Community Journal Vol 2 No 1 (2022): I-Com: Indonesian Community Journal (April 2022)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

PkM bertujuan untuk pemodelan matematika. Saat online banyak yang tidak sesuai antara perencanaan dan pelaksanaan. Surve kementerian pendidikan dan lembanga UNICEF 2020 diperoleh 58% kurang efektif saat online. Surve juga dilakukan di SMA dan mendapati, 38% kurang motivasi, 35% alat komunikasi buruk, dan 62% membutuhkan internet gratis, 92% kesulitan konsep matematika secara online. Metode pelaksanaan PkM berbentuk studi kasus, dengan mengembangkan materi matematik. PkM dilaksanakan siswa IPA 1, 2 dan 3 kelas XI SMA Yadikan 11 Jatirangga Bekasi, tanggal 25-28 Mei 2021. Hasil PkM: 1) Bentuk materi yang dapat diiplementasikan secara daring 2) Strategi mengajar dalam pelaksanaan pembelajaran secara daring, dengan respon sangat baik yaitu 90.50%, 3) Bentuk penilaian hasil belajar peserta didik menunjukan 87% sangat baik, 10% baik dan 3% cukup baik. Ada peningkatan peserta didik pasca PkM dilakukan, hal ini terlihat dari hasil belajar dan surve kepuasan peserta didik 89% menyatakan puas. Tindak lanjud dari PkM adalah memonitoring hasil belajar peserta didik dan mengadakan monev dengan guru matematika, membahas masalah, kesulitan peserta dan solusi yang harus dilakukan. Kesimpulan dari hasil PkM adalah adanya peningkatan minat peserta untuk belajar matematika berbantuan materi yang disusun pelaksana PkM. Materi yang disusun meningkatkan hasil belajar peserta didik dalam mengatasi kesulitan.

Kesulitan Siswa dalam Memecahkan Masalah Barisan dan Deret Aritmatika Ayu Marida Silaban; Kerdid Simbolon; Jitu Halomoan Lumbantoruan
Brillo Journal Vol 1 No 2 (2022): Profil Kemampuan Pemecahan Masalah Matematis Siswa
Publisher : S&Co Publishing

The purpose of this research is to analyze students' difficulties in problem-solving in arithmetic sequences and series. The subject of this research is a student at SMA HKBP Lintongnihuta. This research approach is descriptive quantitatively. The types of students' difficulties experienced were analyzed based on Polya's stages of problem-solving. The results of this research are three categories of students based on achievement scores, namely the low category with a percentage of 50%, the medium category with a percentage of 30%, and the high category with a percentage of 20%. There are 4 types of difficulties experienced by students, that is: (1) difficulty in understanding the problem with the number of students experiencing it as much as 28%, (2) students' difficulties in planning problem solving with the number of students experiencing it as much as 11%, (3) students' difficulties in carrying out the plan in problem-solving with the number of students experiencing it as much as 12%, and (4) difficulty in looking back at answers with the number of students experiencing it as much as 8%. The type of difficulty that most students experience is in understanding the problem.

PENGARUH MOTIVASI BELAJAR TERHADAP HASIL BELAJAR PADA SISWA KELAS XI SMA NEGERI 73 JAKARTA Daniel Dongan Parulian Siagian; Santri Chintia Purba; Kerdid Simbolon
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol. 8 No. 1 (2023): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i1.5100

Education plays an important role in the development of science and technology by creating skilled human resources. In learning activities, motivation and of course the learning outcomes themselves cannot be separated. Experts say that good learning outcomes are influenced by high motivation. The purpose of this research is to find out whether there is influence between students' learning motivation and student learning outcomes. This research was conducted at SMA Negeri 73 Jakarta Class XI in the even semester of the academic year. This study uses a survey method to find the relationship between variables with a simple linear regression technique. Sampling used was purposive sampling, amounting to 150 students. Instruments in the form of a questionnaire / questionnaire learning motivation and daily test scores of all students of class XI. Based on the results of the hypothesis test, it is known that there is an influence between the learning motivation variable on the learning outcomes of class XI students in the compulsory mathematics subject at SMA Negeri 73 Jakarta. The results showed that the simple regression model can be used to predict learning motivation variables on learning outcomes, or there is an effect of learning motivation variables (X) on learning outcomes (Y), with a significance level of 0.000 < 0.05.

PENGARUH PENDEKATAN PEMBELAJARAN DITINJAU DARI JENIS KELAMIN TERHADAP HASIL BELAJAR MATEMATIKA Mega Suci Rahayuny; Kerdid Simbolon; Amos Kandola
Sindoro: Cendikia Pendidikan Vol. 5 No. 9 (2024): Sindoro Cendikia Pendidikan
Publisher : Cahaya Ilmu Bangsa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9644/sindoro.v5i9.4541

Peneliti ini bertujuan untuk melihat efektivitas hasil belajar dari pendekatan SAVI dengan Snowball Throwing dan melihat pengaruh jenis kelamin dengan pendekatan SAVI dan Snowball Throwing di SMPN 203 Jakarta, khususnya kelas VII-9 dan VII-10. Metode yang digunakan dalam penelitian ini adalah kuasi eksperimen dengan jumlah sampel penelitian 60 siswa, yaitu 30 siswa kelas VII-9 sebagai kelas eksperimen SAVI dan 30 siswa kelas VII-10 sebagai kelas eksperimen Snowball Throwing. Instrumen penelitian yang digunakan dalam pengumpulan data adalah tes hasil belajar matematika pada pokok bahasan bangun datar segitiga. Tes terdiri dari 30 soal disusun dalam bentuk pilihan ganda dengan 4 pilihan. Uji prasyarat analisis menggunakanuji normalitas dengan uji Liliefors dan uji homogenitas dengan uji Chi-Kuadrat. Dari hasil perhitungannormalitas dan homogenitas kedua sampel berdistribusi normal dan homogen. Kemudian dilanjutkan denganuji ANAVA (Analisis Varians). Dari hasil analisis ANAVA diperoleh 1) diterima, maka hasil belajar siswa dengan pendekatan SAVI lebih rendah atau sama dengan siswa metode Snowball Throwing. 2) diterima, maka hasil belajar siswa laki-laki lebih rendah atau sama dengan siswa perempuan. 3) diterima, tidak terdapat pengaruh yang signifikan antara jenis kelamin dengan pendekatan SAVI dan metode Snowball Throwing terhadap hasil belajar siswa.

Sosialisasi Media Digital untuk Menganalisis Minat Kewirausahaan pada Siswa SMAN 1 Jonggol Sianturi, Manogari; Simanjuntak, Familia Novita; Simbolon, Kerdid; Sunarto, Sunarto; Ditasona, Candra; Tugelida, Nel Bryan C
Jurnal Pengabdian Pada Masyarakat Vol 9 No 4 (2024): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/jppm.v9i4.1265

Pada era perkembangan teknologi, perubahan dalam dunia kerja terjadi dengan sangat cepat. Banyak pekerjaan yang sebelumnya konvensional kini digantikan oleh teknologi atau otomatisasi. Hal ini mendorong dilakukannya kegiatan pengabdian kepada masyarakat untuk menganalisis minat siswa dalam berwirausaha serta memberikan edukasi dan keterampilan yang dibutuhkan agar mereka dapat memanfaatkan media digital secara maksimal. Dengan mengajarkan wirausaha sejak dini, diharapkan peserta dapat lebih siap beradaptasi dan menciptakan peluang kerja sendiri, bukan hanya bergantung pada pekerjaan konvensional. Kegiatan ini diikuti oleh 52 peserta dari SMA Negeri 1 Jonggol dan diselenggarakan dalam bentuk sosialisasi yang melibatkan pakar wirausaha dari Don Mariano Marcos Memorial State University (DMMSU). Metode yang digunakan adalah ceramah dan diskusi, dengan tiga tahapan, yaitu: persiapan, pemberian materi, dan diskusi. Hasil sosialisasi menunjukkan bahwa lebih dari 60% peserta mengalami peningkatan pemahaman tentang pentingnya literasi digital, kemampuan memanfaatkan media digital, dan cara menggunakan media tersebut. Selain itu, lebih dari 45% peserta menunjukkan minat untuk berwirausaha. Secara keseluruhan, kegiatan ini berjalan sukses dan memberikan dampak positif bagi peserta. In the era of technological development, changes in the world of work are happening very quickly. Many jobs that were previously conventional are now replaced by technology or automation. This encourages community service activities to analyze students' interest in entrepreneurship and provide the education and skills needed so that they can make the most of digital media. By teaching entrepreneurship from an early age, it is hoped that participants can be better prepared to adapt and create their own job opportunities, not just relying on conventional jobs. This activity was attended by 52 participants from SMA Negeri 1 Jonggol and was held in the form of socialization involving entrepreneurial experts from Don Mariano Marcos Memorial State University (DMMSU). The method used was lecture and discussion, with three stages, namely: preparation, material delivery, and discussion. The results of the socialization showed that more than 60% of participants experienced an increased understanding of the importance of digital literacy, the ability to utilize digital media, and how to use the media. In addition, more than 45% of participants showed interest in entrepreneurship. Overall, this activity was successful and had a positive impact on the participants.

Improving Mathematical Understanding on Geometry for 9th Grade Students through Three-Dimensional Mathematics Learning Media Based on Virtual Reality Simbolon, Kerdid; Ditasona, Candra; Setiawan, Laurencia Firstania
Brillo Journal Vol 4 No 1 (2024): Innovative Strategies to Enhance Mathematics Learning Effectively
Publisher : S&Co Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56773/bj.v4i1.71

This study aimed to develop a three-dimensional virtual reality (VR)-based learning media for teaching mathematics at 9th grade students, focusing on improving students' understanding of geometric shapes. Utilizing the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model, the research involved the development of an interactive VR tool that allows students to engage with complex geometric concepts in an immersive environment. The VR media was validated by subject learning material experts in terms of content, language, and technical aspects, resulting in an overall validity score of 4.04, indicating high validity. Implementation quantitative analysis showed that the tool significantly improved student comprehension, with an average practicality score of 3.81, indicating that the media was easy to use in the classroom. This study concludes that VR-based learning media offers a promising approach to overcoming the difficulties students face in understanding three-dimensional geometry, providing both an engaging and effective learning experience.

The Effect of Numbered Head Together Learning Model Assisted by Learner Worksheets on Mathematical Problem-solving Ability Jefry Samuel; Tan Hian Nio; Kerdid Simbolon
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7011

The purpose of this study is to determine whether there is a difference in problem-solving ability assisted by worksheets between students who apply the NHT and Expository learning models. To determine whether or not there is an increase in problem-solving skills assisted by worksheets between students who apply the NHT and expository learning models. This research involved VII-A and VII-B classes of SMP Negeri 50 Jakarta with Quasi Experimental Design. Data obtained from posttest scores, where the data is normal and homogeneous while the data from the gain is normal and inhomogeneous then using the Independent Sample T-Test test, the results: (1) There is no difference in the mathematical problem-solving ability of students with the treatment of NHT and expository learning models. The average posttest value of mathematical problem-solving ability that gets the NHT learning model treatment reaches 58.72 while with the expository learning model treatment reaches 49.57. (2) There is a difference in the improvement of mathematical problem-solving ability between students who apply the NHT and expository learning models. The average gain data value of the Experiment class reached 46.56 and n - gain reached 0.5660 while the Expository class data gain reached 31.58 and n - gain reached 0.4126.

Improvement the Results of the Minimum Competency Assessment (MCA) Literacy and Numeracy Class V SDN Pulogadung District : A Case Study of Fifth Grade Students at SDN Pulogadung District Ayu ArthaSari Beangelita Napitupulu; Kerdid Simbolon; Candra Ditasona
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 2 (2025): October
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i2.7362

This study is based on the low literacy and numeracy skills of students in Indonesia. This study aims to see the improvement of literacy and numeracy skills possessed by grade V students at SDN Pulogadung. The instrument used in this study is the MCA (Minimum Competency Assessment) test. The approach used in this study is quantitative descriptive with a one group pretest post-test design. Data was collected through the AKM instrument test involving 30 students. The data was analyzed using the Gain test. The results of the study showed that there was an increase in literacy ability of 0.179 and numeracy of 0.379. It can be concluded that literacy skills have increased with low categories while numeracy skills have increased with medium categories.

Evaluating the Influence of Problem-Based Learning on High School Students’ Mathematics Performance Pascal; Tan Hian Nio; Simbolon, Kerdid
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 10 No 4 (2026): April
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v10i4.7647

This research examines the influence of the Problem-Based Learning (PBL) model on the mathematics learning outcomes of Grade X students at SMAN 71 Jakarta. The study was conducted in response to students’ low achievement in mathematics and the learning difficulties commonly associated with conventional, teacher-centered instruction. A quantitative method with a quasi-experimental design was employed, involving two Grade X classes selected through purposive sampling: one experimental class (X-B) and one control class (X-C), each comprising 36 students. Students’ learning outcomes were measured using expert-validated pretest and posttest instruments. The collected data were analyzed using a series of statistical procedures including validity, reliability, normality, homogeneity tests and independent samples t-test using SPSS version 26. The analysis showed a significance value of 0.004 (p < 0.05) and the calculated t-value was 2.946 which is greater than the critical t-value of 1.994. These results indicate that the use of PBL model has led to a statistically significant improvement in the learning outcomes of students in mathematics. Furthermore, students who learned through PBL showed greater engagement and achieved higher scores than those who received conventional instruction.

Co-Authors Amos Kandola Ayu ArthaSari Beangelita Napitupulu Ayu Marida Silaban Candra Ditasona Daniel Dongan Parulian Siagian Ditasona, Candra Familia Novita Simanjuntak Jefry Samuel Lumbantoruan, Jitu Halomoan Manogari Sianturi Mega Suci Rahayuny Pascal Risma Uly Manalu, Risma Uly Santri Chintia Purba Setiawan, Laurencia Firstania Stevi Natalia Sunarto Sunarto Tan Hian Nio Tan Hian Nio Tugelida, Nel Bryan C

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