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EduMatika: Jurnal MIPA
Published by Lembaga Riset Mutiara Akbar
ISSN : -     EISSN : 28088069     DOI : -
Core Subject : Science, Education,
Chemistry Education Mathematics Physics
EduMatika : Jurnal MIPA adalah jurnal yang diterbitkan oleh Lembaga Riset Mutiara Akbar, Medan, Indonesia merupakan jurnal akses terbuka yang dapat digunakan sebagai media interaksi bagi seluruh cendikiawan di bidang Penelitian pendidikan Matematika, Biologi, Fisika dan KImia.. Jurnal ini diperuntukkan bagi, peneliti, dosen, serta mahasiswa dari berbagai institusi dan afiliasi di Indonesia.
Arjuna Subject : Umum - Umum
Articles 67 Documents
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The Effect of Meaningful Instructional Design (MID) Learning Model on Students' Mathematical Reasoning Ability on the Material of Arithmetic Rows and Rows in Class VIII SMP Negeri 2 Tebing Tinggi Glean, Gohanna Rizky; Sidabutar, Ropinus; Simarmata , Gayus
EduMatika: Jurnal MIPA Vol. 3 No. 4 (2023): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v3i4.398

Abstract

The aim of this research is to find out how the Meaningfull Instructional Design Learning Model influences students' Mathematical Reasoning abilities on the subject of number patterns, after implementing the Meaningfull Instructional Design (MID) Learning Model. The type of research used is the Pre-experimental Design research method. The research subjects were class VIII-9, totaling 30 people. In this research the author used a quantitative approach. The design used in this research is one-shot case study. Data collection techniques in this research are in the form of tests and questionnaires to determine students' mathematical reasoning abilities in the research process carried out. Data analysis techniques were carried out using normality, linearity and hypothesis testing. From the results of data analysis, it was obtained that the results of students' mathematical reasoning abilities showed that the influence was shown through the regression equation Y = 7.280 + 0.224X. This influence is through the t-test, namely ????count ????table(3.448 > 2.048) or p (sig.) < 0.05 (0.000 < 0.05), then H0 is rejected and H1 is accepted, which means there is an influence of the Meaningful Instructional Design Learning Model. It can be concluded that by applying the influence of the Meaningful Instructional Design Learning Model, it can improve students' mathematical reasoning abilities in students' mathematics learning material on number patterns in class VIII SMP Negeri 2 Tebing Tinggi for the 2023/2024 academic year.
Analysis of Students' Mathematical Understanding in Gradient Material Linear Function Graphics Class IX UPTD SMP Negeri 3 Pematang Siantar Br Sitepu, Yesika Veronika; Pangaribuan, Firman; Simarmata, Gayus
EduMatika: Jurnal MIPA Vol. 3 No. 4 (2023): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v3i4.400

Abstract

This research aims to find out how to analyze students' mathematical understanding of gradient materials for linear function graphs for Class IX 7 UPTD SMP Negeri 3 Pematang Siantar. The research method used in this research is a qualitative method with descriptive data analysis. The subjects in this research are all students in class IX 7 of SMP Negeri 3 Pematang Siantar in the 2023/2024 academic year. The number of subjects in this research was 30 students. The instrument used in this research is a mathematical understanding test in the form of a description using 3 indicators, namely restating concepts that have been studied, presenting concepts in various forms of mathematical representation, applying concepts or problem-solving algorithms. These 3 indicators are used in 6 questions. Based on the data analysis carried out, the overall mathematical understanding ability of students is at a medium level, namely with a percentage of 47.8%. The indicators used are 1) restating mathematical concepts, 2) presenting mathematical representations, 3) applying concepts or problem-solving algorithms. Based on the previous explanation, it can be concluded that the mathematical understanding of students in class IX 7 UPTD SMP Negeri 3 Pematang Siantar as a whole is at a medium level.
The Influence of The Think Pair Share Cooperative Learning Model on The Ability of Mathematical Problem Solving in The System of Three Variable Linear Equations of Students in Class X of SMA Negeri 4 Pematang Siantar Sinaga, Ruth Desti; Sidabutar, Ropinus; Marbun , Yanty Maria
EduMatika: Jurnal MIPA Vol. 3 No. 4 (2023): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v3i4.401

Abstract

Based on the results of data analysis and discussion, it can be concluded that there is a positive and significant influence of the Think Pair Share cooperative learning model on mathematical problem-solving abilities in three-variable linear equation systems material for students in class X SMA Negeri 4 Pematang Siantar for the 2023/2024 academic year. This influence is shown through the regression equation Y= 1.447+ 0.714X. This influence is through the t-test, namely t-count > t-table (12.865 > 2.048) or p (sig.) < 0.05 (0.000 < 0.05) then H0 is rejected and H1 is accepted, which means there is an influence of the Think cooperative learning model Pair Share on mathematical problem-solving abilities in three-variable linear equation systems material for students in class X SMA Negeri 4 Pematang Siantar Academic Year 2023/2024. The contribution of variance of variable X (Think Pair Share cooperative learning model) to variable Y (problem solving ability) is 85.5%.
Analysis of the Effectiveness of Using Technology in Evaluation of Mathematics Learning in the Digital Era Hasibuan, Siti Mawaddah
EduMatika: Jurnal MIPA Vol. 3 No. 2 (2023): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v3i2.413

Abstract

This research aims to analyze the effectiveness of using technology in the mathematics learning evaluation process in digital era. By considering developments in educational technology, this research explores the impact of applying the latest technology on mathematics learning evaluation results. Research methods include surveys, data analysis, and literature reviews to understand how technology can improve measurement of student progress. The research results show that the integration of technology in evaluating mathematics learning makes a positive contribution to conceptual understanding, learning motivation, and student participation. In addition, these findings also identify several challenges and obstacles that may arise during the implementation of technology in the context of mathematics learning. This research provides valuable insights for educators, curriculum developers, and educational practitioners to improve mathematics learning evaluation strategies by utilizing technology in the digital era. It is hoped that the practical implications of this research can support more effective decision making in developing a competitive mathematics learning environment in the digital era
Implementation of the Formative Assessment Model in the Development of Mathematics Learning Evaluation at the Elementary Level Kharunissa, Rahma
EduMatika: Jurnal MIPA Vol. 3 No. 2 (2023): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v3i2.414

Abstract

This research discusses the implementation of formative evaluation instruments in developing mathematics learning evaluation at the elementary level. Formative evaluation is carried out to provide regular feedback to teachers and students, allowing for proactive improvements in understanding of mathematical concepts. Through analysis of evaluation needs, development instruments, teacher training, and trials in mathematics classes, this research achieved positive results. Significant increase in student understanding, positive responses from teachers and students, as well as more dynamic learning adaptation. The conclusion of this study provides an in-depth view of the contribution of formative evaluation in the context of mathematics education at the elementary level. The implications stimulate further thinking in efforts to improve the quality of mathematics learning evaluation.
Understanding Concepts and Student Self Efficacy in Learning Mathematics Numbers Giwa, Giwa
EduMatika: Jurnal MIPA Vol. 3 No. 2 (2023): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v3i2.415

Abstract

The purpose of developing this mathematics learning evaluation is to understand: (1) the application of learning to students' abilities to understand mathematical concepts, (2) differences in abilities to understand mathematical concepts in terms of students' self-efficacy, (3) interaction between learning and the ability to understand mathematical concepts in terms of self-efficacy. student efficacy. Mathematics is one of the important subjects studied by students. Mathematics is a science that studies numbers, algebra, geometry and statistics. Mathematics is the queen of sciences (Mathematics is the Queen of the Sciences), meaning that mathematics does not depend on other fields of study. (Ruseffendi, 1991: 260). Mathematics has an important role in everyday life, from personal life to professional life. However, not all students like mathematics lessons. In fact, many students feel afraid or anxious when taking mathematics lessons. In addition, there are significant differences in the ability to understand mathematical concepts between groups with different levels of self-efficacy. However, the ability to understand mathematical concepts and students' self-efficacy. These results provide an important contribution in the development of mathematics learning methods that can improve students' understanding of mathematical concepts.
The Influence of the Jigsaw Type Cooperative Learning Model on the Mathematics Learning Outcomes of Class VIII Students at SMP Negeri 1 Jorlang Hataran Sitorus, Marulitua Gregorius; Sidabutar, Ropinus; Sihombing, Belasar
EduMatika: Jurnal MIPA Vol. 3 No. 4 (2023): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v3i4.428

Abstract

The aim of this research is to find out how the jigsaw type cooperative learning model influences the mathematics learning outcomes of class VIII students at SMP Negeri 1 Jorlang Hataran. The type of research used is Pre-Experimental Design research. Research subjects in class VIII-3 with a total of 30 students. In this research the author used a quantitative approach. The design used in this research is One-shot case study. Based on the results of data analysis and discussion, it can be concluded that there is a significant influence of the use of the jigsaw type cooperative learning model on the learning outcomes of class VIII students at SMP Negeri 1 Jorlang Hataran for the 2023/2024 academic year. This positive influence is shown through the regression equation Y= 16.816 + 0.089X where the b value is 0.089. This influence is through the t-test, namely tcount > ttable (3.608 > 2.048) or (sig.) < 0.05 (0.000 < 0.05), then H0 is rejected and H1 is accepted, which means there is a positive and significant influence from the cooperative learning model. jigsaw type on student learning outcomes in relation and function material. The contribution of variance of variable X (jigsaw type cooperative learning model) to variable Y (student learning outcomes) is 32%.
Phytochemical Analysis of Soursop Peel, With the Extraction and Characterization of its Oil Ezeiheukwu, Chika Mary; Okongwu, Dozie John
EduMatika: Jurnal MIPA Vol. 4 No. 4 (2024): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v4i3.740

Abstract

Soursop (Annona muricata) peels was analysed for its proximate composition. It was found to contain 3.2 % dark green oil, 10.65 % crude protein, 21.3% moisture, 3.8 % ash, 12.69 % crude fiber, 31.31 % carbohydrates and 4.40 % ash. The elemental composition of the peel was determined, using Atomic Absorption Spectroscopy. It was found to contain Calcium (32.45 mg/100 g), magnesium (48.23 mg/100 g), zinc (125.15 mg/100 g), phosphorus (128.24 mg/100 g), iron (72.52 mg/100 g) and manganese (3.82 mg/100 g). Extraction of oil from the peel was also carried out using sohxlet extraction method. Some chemical Characteristics of the oil was determined. The result showed that the oil have a saponification value of 131.84 mg, iodine value of 66.68 mg/100 g, free fatty acid value of 3.64 mg, and oleic acid value of 0.1889 mg.
Decoding Bank Stocks: Fundamental Analysis for Market Prediction Maulana, Bintang; Triyunita, Gizka; Tabitha, May Rani; Octaviyani, Risca
EduMatika: Jurnal MIPA Vol. 5 No. 1 (2025): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v5i1.955

Abstract

This study presents a fundamental analysis of three major Indonesian bank stocks—BBCA, BBRI, and BBNI—as of March 2025. Using key indicators such as Price-to-Earnings Ratio (P/E), Price-to-Book Value (P/BV), Dividend Yield, and Return on Equity (ROE), the research evaluates valuation, income potential, and efficiency. Data were based on February 2025 stock prices and 2024 financial projections. Results show BBRI offers the best investment value with a low P/E (10.49x), strong Dividend Yield (7.65%), and solid ROE (18.37%), ideal for income and value investors. BBNI appears undervalued (P/BV 1.27x) with decent yield (5.95%) but lower ROE (12.12%). BBCA maintains premium status with high efficiency (ROE 19.78%) and valuation (P/E 18.85x), suitable for growth-focused investors. Overall, BBRI stands out as the most balanced stock, although sector-specific risks like NPL should be considered. These insights aim to support investor decisions in navigating Indonesia’s banking sector during economic uncertainty.
Analysis of Book Production Quality Using Ewma Control Chart: Comparison of Alpha Parameters, Trend Prediction, and Production Correlation Putri, Amelia; Hani, Aulia; Faradhilla, Anatasia; Hutapea, Risca Octaviyani
EduMatika: Jurnal MIPA Vol. 5 No. 2 (2025): EduMatika: Jurnal MIPA
Publisher : Lembaga Riset Mutiara Akbar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56495/emju.v5i2.1106

Abstract

In the printing industry, maintaining product quality is a critical factor for ensuring customer satisfaction and competitive advantage. This study applies the Exponentially Weighted Moving Average (EWMA) control chart to monitor and control the quality of book production at CV Renjana Offset. Using secondary data from November 2023 to July 2024, the analysis focuses on the percentage of rejected products as a key indicator of quality performance. The EWMA method, with a smoothing constant of ? = 0.3, effectively highlights small shifts in the production process. Results show that all EWMA values lie within the control limits (UCL = 22.54%, LCL = 0.00%), indicating the process is statistically under control. Furthermore, comparison of different alpha values demonstrates the trade-off between sensitivity and stability. A moderate negative correlation (r = -0.505) between production volume and reject percentage suggests increased efficiency at higher production scales. The predicted reject percentage for August 2024 is 4.74%, indicating process stability. Overall, EWMA proves to be a valuable tool in continuous quality monitoring and data-driven decision-making in book production.

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