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Kerdid Simbolon
Universitas Kristen Indonesia
Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Mathematics Physics Public Health Social Sciences Other

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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (568.68 KB) | DOI: 10.33379/icom.v2i1.1210

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (194.713 KB) | DOI: 10.56773/bj.v1i2.14

Abstract

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

Abstract

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.
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

Abstract

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

Abstract

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.
Co-Authors Ayu ArthaSari Beangelita Napitupulu Ayu Marida Silaban Candra Ditasona Daniel Dongan Parulian Siagian Jefry Samuel Lumbantoruan, Jitu Halomoan Risma Uly Manalu, Risma Uly Santri Chintia Purba Stevi Natalia Tan Hian Nio