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All Journal Edumatsains Jurnal Pengabdian Sains dan Humaniora
Candra Ditasona
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Agriculture, Biological Sciences & Forestry Chemistry Education Mathematics Physics Other

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Optimalisasi Pembelajaran Daring Bagi Para Guru Di Yayasan Cawan 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.2.2.2023.127-135

Abstract

Kondisi pandemic Covid-19 sangat memberikan dampak bagi pembelajaran di sekolah. Baik guru maupun siswa kesulitan dalam melaksanakan pembelajaran daring. Salah satu sekolah yang terdampak akibat pandemic Covid-19 adalah sekolah-sekolah dibawah naungan Yayasan Cawan. Kegiatan pengabdian ini bertujuan untuk membantu para guru dalam mengoptimalkan pembelajaran daring. Kegiatan pengabdian ini dilaksanakan secara daring pada tanggal 7 Agustus 2021. Peserta kegiatan berjumlah 53 orang yitu para guru dari TK hingga SMA.Untuk mengetahui keberhasilan program pengabdian masyarakat ini digunakan instrument angket. Data yang diperoleh dari instrument angket akan dianalisis secara deskriptif. Berdasarkan data yang diisi oleh 25 responden diperoleh kesimpulan bahwa pelaksanaan kegiatan pengabdian optimalisasi pembelajaran daring bagi para guru di Yayasan Cawan memiliki kebermanfaatan sangat tinggi atau sangat bermanfaat.
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.
From Definition to Need: Redefining the Selected Topics in Mathematics Education Course Through Students’ Mastery Profiles Santri Chintia Purba; Candra Ditasona; Stevi Natalia
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.v10i2.7489

Abstract

This study aims to analyze mathematics education students’ mastery of high school mathematical content and their readiness to teach it, as a basis for redefining the design of the Selected Topics in Mathematics Education (Kapita Selekta) course. A quantitative descriptive survey design was employed involving 14 mathematics education students at Universitas Kristen Indonesia who were enrolled in the Kapita Selekta II course. Data were collected using a questionnaire that assessed students’ mastery and willingness to learn and teach 32 high school mathematics topics. Descriptive statistics were used to determine the percentage of mastery and non-mastery for each topic. The findings reveal that only 40.13% of topics were mastered, while 59.87% showed a lack of mastery. Students demonstrated stronger understanding in algebraic and symbolic topics such as sequences, exponents, relations, and matrices, but weaker performance in geometry, trigonometry, and calculus-related topics. Despite these gaps, all respondents expressed a willingness to improve their mastery of mathematical content, with 42.9% being very willing and 57.1% willing to do so. These results suggest that the Kapita Selekta course should not be limited to topic selection based on theoretical definitions. Instead, it should be redesigned to respond to students’ actual mastery profiles and learning needs. By aligning course content with diagnostic data, the program can strengthen students’ mathematical competence and pedagogical readiness to teach effectively at the high school level.
Students’ Perceptions of Green Chemistry in a Project-Based Learning (PjBL) Model Integrated with Local Culture Simanjuntak, Familia Novita; Candra Ditasona; Sri Rejeki Ignasia Sitohang; Angelia Patricia Situmorang
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.v10i4.7168

Abstract

The purpose of this study is to examine how students see studying green chemistry using a culturally integrated project-based learning (PjBL) approach. This study used a qualitative descriptive methodology and was carried out at Don Bosco High School in Jakarta. A saturation sampling strategy was used to choose a sample of 35 tenth-grade science students. Students' written reflections after the PjBL exercises and observations made during the learning process were used to gather data. Data reduction, data presentation, and conclusion drawing were the phases of data analysis. The study's findings show that students' perspectives of studying chemistry have changed from being initially seen as challenging and abstract to being more relevant and significant. While some difficulties with group cooperation were still noted, the majority of students showed active involvement and positive responses throughout the learning process, as evidenced by increased interest, curiosity, and participation in project activities. More than half of the students selected the composting project as their final result, and they were able to connect it to actual environmental problems, especially how organic waste is managed in everyday life and cultural customs. These results show that the use of culturally integrated PjBL promotes collaborative and relevant learning experiences in addition to giving students a more practical understanding of green chemistry principles. As a result, this teaching approach helps students develop more favorable opinions of chemistry and strengthens the link between scientific ideas and practical applications.
Application of the Newton–Raphson Method to Compare Effective Interest Rates for Motorcycle Installments Tampubolon, Monica Noviyanti; Candra Ditasona; Siregar, Jeny; Simbolon, Rido
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.v10i4.7808

Abstract

Purchasing a motorcycle on credit is a popular option for many people in Indonesia. However, information about financing provided to consumers usually only includes the down payment amount, monthly installments, and credit term, without providing details about the effective interest rate. This makes it difficult for consumers to compare different credit schemes fairly. This study aims to use the Newton-Raphson method to determine and compare the effective interest rates of Honda Beat CBS and Yamaha Mio M3 CW motorcycle installments. The data used in this study was taken from official financing brochures for a 23-month period. The effective interest rate was determined by solving nonlinear equations for fixed installment loans using the Newton-Raphson method. The results of the study show that although the monthly installments for both motorcycles are quite similar, there are differences in effective interest rates that cannot be seen directly from the installment amounts. The Newton-Raphson method has been proven to provide accurate and structured solutions that are easy to use. Therefore, this method can be used as an objective tool for analyzing and comparing motorcycle credit financing.
Co-Authors Angelia Patricia Situmorang Ayu ArthaSari Beangelita Napitupulu Familia Novita Simanjuntak Kerdid Simbolon Santri Chintia Purba Simbolon, Rido Siregar, Jeny Sri Rejeki Ignasia Sitohang Stevi Natalia Tampubolon, Monica Noviyanti