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All Journal Edumatsains Jurnal Dinamika Pendidikan International Journal of Applied Sciences and Smart Technologies Range : Jurnal Pendidikan Matematika Al Jahiz: Journal of Biology Education Research Brillo Journal Jurnal Pengabdian Sains dan Humaniora IndoMath: Indonesia Mathematics Education International Journal of Didactic Mathematics in Distance Education

Purba, Santri Chintia

Universitas Kristen Indonesia

Author-ID : 5338952

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Other

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APPLICATION OF KLEIN-4 GROUP ON DOMINO CARD Saragih, Asido; Purba, Santri Chintia
International Journal of Applied Sciences and Smart Technologies Volume 02, Issue 01, Juni 2020
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v2i1.2191

Klein-4 or Klein-V group is a group with four elements including identity. The binary operation on Klein-4 group will produce identitiy if operated to it self and produce another non-identity element if operated to another non-identity element. The focus of this paper is to explain the principle of Klein-4 group on Domino card and also find all complete possible elements. Domino card is a set of 28 cards which the surface of each card divided in two identic boxes contain combination of dots as pattern. The final part of this research is to find out all possible combination of cards which can be used as elements of a Klein-4 groups.

KEMAMPUAN KOMUNIKASI MATEMATIKA SISWA KELAS VIII DENGAN MENGGUNAKAN MODEL PEMBELAJARAN THINK TALK WRITE (TTW) DI SMP NEGERI 7 BEKASI Santri Chintia Purba
Jurnal Dinamika Pendidikan Vol. 13 No. 3 (2020): November
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51212/jdp.v13i3.1958

Mathematical communication skills are very important achievement in learning mathematics, which can lead students to think creatively, logically, and critically. However, the existing learning process has not facilitated students to have mathematical communication skills, one of the reasons is the conventional mathematics learning model, in which teachers dominate the learning process. The learning model which implemented in order to improve mathematical communication skills was Think Talk Write (TTW) learning model. This research was conducted in class VIII SMP Negeri 7 by using a quasi experiment method. The data obtained are pretest, posttest and gain data. The data were processed using the two-mean statistical test, namely the t’s test, it was found that there were differences in students' mathematical communication skills using the TTW learning model and the Expository model, with an average of 65.54 and 51.02. Furthermore, the average increase in students' mathematical communication skills by using the TTW learning model was higher than the Expository learning model, with an average of 55.60 and 45.26. Moreover, the increase in the TTW class consisted of 49% high level, 44% medium level and 7% low level, while in the Expository class the increase consisted of 12% high level, 71% medium level and 17% low level. Keywords: Communication of mathematics, Think Talk Write (TTW), Expository

Application of Klein-4 Group on Domino Card Asido Saragih; Santri Chintia Purba
International Journal of Applied Sciences and Smart Technologies Volume 02, Issue 01, June 2020
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v2i1.2191

Perbedaan Kemampuan Matematis Siswa pada Pembelajaran Berbasis Online dengan Model Problem-Based dan Ekspositori Clara Natalia; Risma Uly Manalu; Santri Chintia Purba
Brillo Journal Vol 1 No 1 (2021): Implementasi Model Pembelajaran terhadap Kemampuan Matematis Siswa
Publisher : S&Co Publishing

This study aims to: 1) Determine the significant differences in students’ mathematical abilities using the Problem-Based Learning (PBL) and Expository learning model with Online-based learning; 2) Knowing the difference in the significant increase in students' mathematical abilities using the PBL and Expository learning model with online-based learning. The research method used is a Quasi Experiment with Nonequivalent Control Group Design. The research subjects were students of class XI MIA which consisted of 33 students in the experimental class and 35 students in the control class. The results showed that all stages of learning were in accordance with the stages of the PBL and Expository learning model. Based on statistical calculations (t-test ') with a significance level of 0.05, it was found that there was no significant difference and increase in the mathematical abilities of students who were taught the PBL and Expository learning model with Online-based learning.

Analisis Kemampuan Pemecahan Masalah Siswa SMP pada Materi Statistika Ditinjau dari Kemampuan Awal Matematika Mega Rosalinda; Santri Chintia Purba; Risma Uli Manalu
Brillo Journal Vol 1 No 2 (2022): Profil Kemampuan Pemecahan Masalah Matematis Siswa
Publisher : S&Co Publishing

The topic is carried out on the basis of analyzing the math problem solving ability of secondary school students on the basis of statistical documents considered from the initial math problem solving ability. The purpose of this study is to find a method to analyze the math-solving ability of middle school students on the basis of statistical data on the initial math-solving ability. The method used in this study is qualitative method. This study was conducted at Santa Maria Monica High School. Subject used in this study are 9th grade VIII SMP Santa Maria Monica students using rational sampling technique. The results of this study indicate that students with high initial math skills can perform all stages of problem solving correctly and accurately. Students with early average math abilit were able to solve the give problems, were able to take actions to solve the problem, but still the steps were no systematic and not maximal. Students with low initial math skills may not complete all step of the Problem Soving indicator corretly.

Profil Kemampuan Pemahaman Matematis Siswa SMK Swasta Otomindo Jakarta pada Materi Sistem Persamaan Linear Dua Variabel Cindi Sinaga; Bitman Manullang; Santri Chintia Purba
Brillo Journal Vol 1 No 2 (2022): Profil Kemampuan Pemecahan Masalah Matematis Siswa
Publisher : S&Co Publishing

Lesson plans are more focused on how to achieve goals and indicators. However, student ability profile has not become the main basic standard. Therefore, this research aims to describe the profile of students' mathematical understanding abilities. This research is a quantitative descriptive conducted on XI grade Otomindo’s vocational students in Jakarta. Data obtained from student achievement on the understanding ability test. Students' understanding is profiled according to the results of data analysis on their level and abilities based on achievement in mechanical, inductive, rational and intuitive indicators. The results of the study concluded that the profile of students' mathematical understanding abilities was dominated by inductive understanding abilities. It is because students are better able to apply formulas or concepts to simple or similar problems, but it is difficult to the rational and intuitive indicators. Students' mathematical understanding ability is included in the low category on two indicators, that is rational in terms of describing the truth of formulas and theorems, and intuitive in term of estimating the truth before analyzing further. While in the medium category, it is on mechanical indicators in terms of remembering and applying formulas routinely and calculating simply.

Analisis Kesalahan dalam Pemecahan Masalah Logaritma Kelas X MIPA SMA Harapan Jaya Cipto Hardiansyah; Bitman Manullang; Santri Chintia Purba
Brillo Journal Vol 1 No 2 (2022): Profil Kemampuan Pemecahan Masalah Matematis Siswa
Publisher : S&Co Publishing

This study aims to find out the various errors of students in working on logarithmic problems so that the specific objectives in this study are: (1) Knowing the types of errors made by students in solving logarithmic problems. (2) Knowing the factors that cause student errors in solving logarithmic problems. This research was conducted at Harapan Jaya High School. Based on this goal, the results of this study can be used by teachers to overcome the same problem in the future. The approach used in this study is a qualitative approach. The research method used is a case study. The samples used in this study were 3 students of class X MIPA SMA Harapan Jaya with purposive sampling technique. The results of this study indicate that: (1) There are 3 types of errors made by students, namely conceptual errors, procedural errors and arithmetical errors. (2) The factors that cause student errors are the condition of students being tired, learning conditions that are not supportive and not focused and not thorough. Based on the results of this study, teachers are expected to be able to assist students in minimizing existing errors by implementing various learning models that increase students' accuracy in solving various problems. In addition, teachers can also provide feedback to students so that students can find out their mistakes and help students overcome any errors that exist.

PENERAPAN MODEL PEMBELAJARAN STUDENT TEAM ACHIEVEMENT DIVISION UNTUK MENINGKATKAN KEMAMPUAN MATEMATIS Putri Saron Mallini; Santri Chintia Purba; Hotmaulina Sihotang
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.v8i1.5094

Mathematics learning is designed to achieve the objective of mathematics learning, that is to stimulate students to grow their mathematical abilities. However, the activities of teaching-learning have been applying the conventional learning method, in which the teacher has full control of learning so that students' mathematical abilities are classified as low. The learning model that is applied to the solution to improve students' mathematical abilities is Student Team Achievement Division (STAD). This research involved VIII classes of SMP Negeri 50 Jakarta, which are VIII-B and VIII-D classes using a Quasi-Experimental Design. Data collection was based on a pretest, posttest, and gain data by statistical test through the Mann-Whitney U test by the calculation of the program SPSS 26 because the data is not a normal distribution and not homogeneous so that it is obtained that: (1) There is a difference in mathematical ability between students who apply STAD and Expository learning models. The average posttest score of mathematical ability between students with the STAD learning model treatment is superior to the Expository learning model, that is 66,64 and 15,78. (2) There is a difference in improving mathematical ability between students who apply the STAD and Expository learning models. The average gain score of mathematical ability between students who apply the STAD learning model is superior to the Expository learning model, that is 64,56 and 13,08.

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.

Pemanfaatan Sumber Belajar yang Variatif: Pelatihan bagi Para Guru di SMP PGRI 2 Ciawi Santri Chintia Purba; Risma Uly Manalu; Stevi Natalia; Candra Ditasona
Jurnal Pengabdian Sains dan Humaniora Vol 2 No 2 (2023): Edisi Oktober 2023
Publisher : Fakultas Keguruan dan Ilmu Pendidikan-Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jpsh.2.2.2023.116-126

Kondisi permasalahan yang dihadapi dalam pengabdian ini antara lain guru kesulitan dalam mencari dan menentukan sumber belajar yang cocok. Meskipun sumber belajar yang variatif tersedia, tidak semua guru memiliki pemahaman dan keterampilan yang cukup untuk memanfaatkannya secara efektif. Guru masih kurang akrab dengan teknologi atau kurang paham tentang cara mengintegrasikan sumber belajar tersebut ke dalam pembelajaran. Tidak semua sumber belajar yang tersedia memiliki kualitas yang sama, sumber belajar yang tersedia di internet mungkin saja tidak relevan atau tidak sesuai dengan tujuan pembelajaran yang akan dicapai. Oleh karena itu diperlukan pelatihan tentang pemanfaatan sumber belajar yang variatif bagi guru. Maka dalam hal ini, tim melakukan sharing knowledge bagi guru dan pembelajaran kepada siswa. Diskusi mencakup prinsip pembelajaran era zaman now, pembelajaran berbasis budaya, menggunakan edmodo dan kahoot. Melalui pelatihan dan pembelajaran yang dilakukan diperoleh bahwa: 1) Siswa menerima pembelajaran matematika yang menyenangkan; 2) Guru-guru mendapat penambahan ilmu dan wawasan baru mengenai penerapan IT dalam pembelajaran dan bagaimana tetap menekankan pemahaman konsep dengan memanfaatkan benda-benda sekitar siswa/i tersebut; 3) Guru-guru juga bisa menerapkan penggunaan pembelajaran online dengan menggunakan Edmodo dan Kahoot.

Co-Authors Asido Saragih Bania Bastanta Tarigan Bela Desy Natalia Bintang Pratama Bitman Manullang Candra Ditasona Cindi Sinaga Cipto Hardiansyah Clara Natalia Daniel Dongan Parulian Siagian Darhim Darhim Dimas Cristopel Diva Nathania Elferida Sormin Feliatra HOTMAULINA SIHOTANG Jordan Angelo Gijantoro Junsay, Merle Kerdid Simbolon Kornelius Anugrah Zebua Kristopel Pardede Lumbantoruan, Jitu Halomoan Manogari Sianturi Medyawanti Pane Mega Rosalinda Merle L. Junsay Merley Junsay Ningsi, Hildegardis Novi Suranti Pardosi, Deborah Putri Artha Putri Saron Mallini Rene Estomo Rene T Estomo Riska Septia Wahyuningtyas Risma Uli Manalu Risma Uly Manalu, Risma Uly Roberto Charlos Ruth Ririn Vania Siregar Sesmaro Max Yuda Situmeang, Gita Meilisa Stevi Natalia Tan Hian Nio Verdinando Taek Yohana Aplonia Pahanael

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