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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.

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.

THE INFLUENCE OF LEARNING INTEREST AND MOTIVATION ON MATHEMATICS LEARNING ACHIEVEMENT IN CLASS VII STUDENTS OF SMP NEGERI 80 JAKARTA Yohana Aplonia Pahanael; Santri Chintia Purba; Tan Hian Nio
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5592

This study aims to determine: (1) The relationship between interest and learning motivation on mathematics learning achievement among seventh-grade students at SMP Negeri 80 Jakarta; (2) The relationship between learning interest and mathematics learning achievement at SMP Negeri 80 Jakarta; (3) The relationship between learning motivation and mathematics learning achievement among seventh-grade students at SMP Negeri 80 Jakarta. The research method employed is a quantitative approach with a type of quantitative descriptive research. The research population includes all seventh-grade students at SMP Negeri 80 Jakarta. Meanwhile, the research sample consists of 75 students. The data collection technique in this research involves the use of instruments, namely: (1) learning interest questionnaire, (2) learning motivation questionnaire, and (3) even semester final exam scores. The obtained data were analyzed using descriptive statistical analysis techniques and inferential statistical analysis techniques. The results of descriptive statistical analysis indicate that students' learning interest scores reached 77.3%, falling into the moderate category. Meanwhile, learning motivation reaches 73.3%, categorized as high, and learning achievement at 89.3% is in the category of beginning to develop.

NUMERICAL ANALYSIS OF RICE GROWTH PHASES IN KARAWANG USING THE GAUSS-JORDAN ELIMINATION METHOD Ruth Ririn Vania Siregar; Santri Chintia Purba; Bela Desy Natalia; Kornelius Anugrah Zebua
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5595

Indonesia's growth cannot be separated from Indonesia's economic growth. The agricultural sector has a massive and significant impact on Indonesia's economic growth. One of the agricultural products that’s important is rice. Rice is a seasonal crop that is very necessary for human survival. Karawang, one of the districts in West Java Province, which is known as Lumbung Padi City, is the location of the main topic in making this journal. In fact, based on BPS data, the area harvested for paddy fields in Karawang from 2010-2015 was found not to have increased regularly from year to year. This is interesting to discuss because the rice harvest area is expected to increase regularly to support Indonesia's economic growth. Of course, this is because the rice harvest area will affect the amount of rice produced in the rice fields. By ignoring other internal and external factors of rice growth, this journal will only focus on rice harvest area based on rice growth phases (vegetative 1, vegetative 2, and generative) and accumulated harvest area using the Gauss Jordan elimination method. Calculations are carried out to determine the possibility of farmers to predict the maximum amount of rice production and avoid losses in purchasing materials to support rice growth

Development of Integrated Electronic Module with Instructional Videos Santri Chintia Purba
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 9 No 1 (2024): July
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v9i1.6103

This research was conducted to develop a teaching material product for teaching Mathematics. The product developed is an electronic module containing instructional videos aimed at addressing common issues in online learning. The research method used was Research and Development (R&D). The R&D stages included analyzing field needs, designing the concept of the developed product, designing the product itself, and validating the product with three experts: Content Validator, Media Validator, and Language validator. Based on the questionnaire validation from the experts on the e-module development, the findings are as follows: Content validation scored 73.5 out of 75 in total, or 4.9 out of 5 on a scale of 5. The score interval obtained was 98%, indicating that the content validity criteria are highly valid. Language validation aspect indicated that the language used is highly valid, scoring 50 out of 50 in total, or 5 out of 5 on a scale of 5, meeting the 100% validity criteria. Media validation scored 65.33 out of 75, or 4.35 out of 5 on a scale of 5. The score interval obtained was 87%, indicating that the media validity criteria are very valid.

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