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Jurnal Daya Matematis
Published by Universitas Negeri Makassar
ISSN : 23547146     EISSN : 25414232     DOI : -
Core Subject : Education,
Mathematics
Daya Matematis: Jurnal Inovasi Pendidikan Matematika is a journal that provides an authoritative source of scientific information for researchers and academics, research institutions, government agencies, and teacher education.
Arjuna Subject : -
Articles 12 Documents
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Search results for , issue "Vol 10, No 2 (2022): Juli" : 12 Documents clear
ETNOMATHEMATICS EXPLORATION IN THE CULTURE SYSTEM OF MALAY CULTURE IN NAGA MAHAP VILLAGE Medlyn Claudyasuka Patari; Dewi Risalah; Sandie Sandie; Saiful Bahri; Emi Tipuk Lestari
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.34218

Abstract

Ethnomathematics is the study of mathematics' distinctive characteristics or colors as they exist and develop in society. Ethnomathematics is the study of mathematics as it appears or is utilized in cultural community groups such as urban and rural communities, children of a specific age, labor groups and indigenous peoples. For the vast majority of Indonesians, cultivation is a way of life, particularly the residents of Nanga Mahap Village. Mathematical words are employed in farming activities, ranging from units to fundamental mathematical concepts. Cultivation systems have been practiced in grasslands and forests around the world. Cultivation is a shifting cultivation system from one plot of land to another, usually cleared by cutting down and burning part of the forest to make fields. The goal of this study was to investigate the mathematical principles inherent in the Malay culture's farming system in Nanga Mahap Village. This is a qualitative study with an a ethnographic approach. This is a qualitative research that makes use of an ethnographic approach.. The study took place in Nanga Mahap Village, Sekadau Regency's Nanga Mahap District. The subjects of this research are informants, namely field farmers with Malay culture in Nanga Mahap Village. Data were gathered from a variety of sources including observation, interviewing, and documentation procedures. The results indicated that the farming system incorporated a mathematical element through the requirement for seeds, yields, and tools, namely the concept of comparison, the concept of counting mathematical words, tessellation (tiling), geometry, and congruence
Analysis of Mathematical Problem-Solving Ability Based on Self-Efficacy and Self-Confidence of Class VIII Junior High School Students Aida Ar Rahmah; Slamet Soro
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.34846

Abstract

This study aims to describe students’ mathematical problem-solving ability of Junior High School in terms of students’ self-efficacy (SE) and self-confidence (SC). This typr of research is descriptive qualitative. This research was conducted in class VIII at one of Junior High Schools in Jakarta. Subjects in this research based on the result of questionnaire selected 3 students who had SE and SC from high, medium and low. The research’s instruments are SE and SC questionnaires, mathematical problem-solving ability tests, and interviews.The test and non-test instruments were validated by expert validators before being tested for validity and reliability. The data analysis techniques uses the Miles and Huberman model for data reduction, data presentation, and drawing conclusions. Triangulation techniques was used to test the validity of the research data. The results of this research indicate that students with high SE and SC had the best mathematical problem-solving abilities compared to students with medium to low SE and SC. Students with high SE and SC fulfill 4 indicators of problem-solving ability with maximum scores. Students with medium to low SE and SC only met 3 indicators of problem-solving ability.
High-Level Thinking Skills for Middle School Students in Working on the Types of National Assessment Numeral Questions Putri Harianti; Maimunah Maimunah; Yenita Roza
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.34310

Abstract

Assessment is an activity to reveal the quality of the process and learning outcomes. The first national assessment will be held in 2021. The type of National Assessment question used in this study is the HOTS question. This study aims to describe students' higher order thinking skills in working on types of national assessment questions. This type of research is a qualitative descriptive study, with the subject of class VIII students of SMP Negeri 2 Rambah Samo totaling 28 people. The data collection technique used was a written test consisting of 2 description questions. Based on the results of the study, students' higher order thinking skills in working on national assessment type questions were in the sufficient category, namely 42.86%, less category 17.86%, good category 32.14% and very good category 7.14%. The percentage of appearance indicators analyzed was 84.82%, followed by evaluation indicators at 58.93% and creative indicators at 24.55%. Thus, it can be seen that the high-order thinking ability of students in the very good category is still very low. So it is necessary to apply higher-order thinking skills learning in schools so that students are accustomed to working on HOTS questions and can improve students' higher-order thinking skills.
Analysis of Numeracy Literacy Activities of PGSD Students Through Writing Mathematics A Month Ema Butsi Prihastari; Kastono Kastono
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.35282

Abstract

This study maps numeracy-based mathematics material through mathematics writing activities for 30 days. There are 4 (four) components of numeracy literacy, namely algebra, numbers, geometry and measurement, and data and uncertainty. This type of research is a case study with a qualitative descriptive approach. The research subjects are PGSD students in the fourth semester of the 2021/2022 Academic Year who have taken the Introduction to Basic Mathematics and Geometry and Measurement courses in elementary schools comprising of 3 classes. Data collection techniques use observation, interviews, and documentation with data analysis techniques, namely a) data collection, b) data condensation, c) data presentation, and d) data verification. To guarantee the correctness of the results of the study, techniques are carried out: a) the persistence of observers, which is carried out seriously and continuously and b) triangulation. The results of the study found that the material, that most students presented in mathematics writing activities was Geometry and Measurement with an average percentage of 46.5%, because it was found in many daily lives and was easy to describe in writing. Meanwhile, with an average percentage of 1.67% in Algebraic material which is the least written material for students because it requires accuracy in determining variables.
Development of Open-Ended Based Learning Tools to Improve Creative Thinking and Self-Efficacy Putri Elmaretha Purba; Elmanani Simamora; Izwita Dewi
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.35030

Abstract

This study aims to: 1) obtain learning tools developed based on the Open-Ended approach using Hypercontent that meet validity, practicality and effectiveness to improve students' creative thinking skills and self-efficacy; 2) describe how the improvement of students' creative thinking skills and self-efficacy is implemented by using learning tools based on the Open-Ended approach using Hypercontent. This study uses the ADDIE development model. The results showed that 1) Learning tools based on the Open-Ended approach using hypercontent to improve the creative thinking skills and self-efficacy of SMK students that were developed had met the valid, practical and effective criteria; 2) Improved creative thinking skills and self-efficacy of SMK students using learning tools based on the Open-Ended approach using hypercontent which was developed on the material of sequences and series seen from the normalized gain index. It was found that the increase in students' creative thinking skills in the first try there was an increase in the score with the "low" criteria and in the second trial there was an increase in the score with the "medium" criteria, while the increase in students' self-efficacy was seen from the increase in the average value of the self-efficacy results from trial I to II.
Analysis of Mathematical Communication Ability Based on Learning Activity and Gender of MTs Students Siti Utufina Widuri; Windia Hadi
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.33706

Abstract

This study aims to analyze mathematical communication skills based on learning activity and gender of MTs students. The research method used is a descriptive qualitative method. The total population in this study were 27 students of class VIII, consisting of 9 male students and 18 female students. This subject selection process uses the Wright Maps table in the Winsteps application. The selected subjects are 5 people consisting of 1 student who has high learning activity, 2 students who have medium learning activity, and 2 students who have low learning activity. Each level of learning activity consists of male and female gender. Selected subjects are given a description test and interview questions to analyze their mathematical communication skills. The results showed that male students have better mathematical communication skills than female students. Overall, students with male gender are able to fulfill two out of three indicators of mathematical communication skills. While students with female gender are only able to fulfill one of the three indicators of mathematical communication skills.
Differences in Mathematical Communication Ability Using Discovery Learning and Conventional Learning Models Widyanti Astari; Slamet Soro
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.34844

Abstract

The aims of this research to see the differences in mathematical communication ablility using discovery learning models and conventional learning models and see whether the use of discovery learning models and conventional learning models affects students' mathematical communication abilities.  The sample of this research was 70 learners from two different classes who were randomly selected with purposive sampling techniques. The selected class is used as an experimental class using the discovery learning model and other classes as a control class using a conventional learning model. The data in this research were obtained from the results of the initial test and the final test of mathematical communication ability carried out before and after learning. The data will be analyzed using homogeneity test, normality test, independent sample T-test and paired T-test. The research conducted shows that: (1) The learning model applied to each class can have an influence on mathematical communication abilities. This is evidenced by the increase in the final test results given after learning (2) a learning model that allows students to actively participate in learning activities is not necessarily better than conventional learning models. This is shown by the similarity between the final test scores of the experimental class and the control class.
An Empirical Study for Comparison of Estimation Methods for Value at Risk, Tail Value at Risk, and Adjusted Tail Value at Risk Using Extreme Value Theory Approach to Stock Market Index Sri Muslihah Bakhtiar; Amran Amran; Khaeruddin Khaeruddin
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.35702

Abstract

Risk management helps the financial industry to manage and estimate the risks that may occur by using risk measures. Financial series data mostly have a heavy tail distribution which causes the probability of extreme values to occur. To overcome these extreme values, it is necessary to apply a mathematical model in calculating risk estimates in financial data combined with the Extreme Value Theory approach. The Adjusted-TVaR model is a measure of the risk of modification of the TVaR model to eliminate outliers in the tail of the distribution. The purpose of this study is to measure the accuracy of the Value at Risk, Tail Value at Risk, and Adjusted Tail Value at Risk using the Peak Over Thresholdapproach in Extreme Value Theory Models.The results of the risk estimation research using the POT approach method, show that the higher the level of confidence and the chosen constant, the higher the value of Adj-TVaR presented. This value represents that the potential loss will be higher. The estimation results obtained that the VaR value is smaller than Adj-TVaR and Adj-TVaR is smaller than TVaR. This shows that Adj-TVaR is more efficient to use in terms of predicting risk value when compared to TVaR with the Peak Over Threshold approach
Optimal Control of Mathematical Model of Diphtheria Spreading Putri Amalia; Syamsuddin Toaha
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.35776

Abstract

This article examines optimal control model for the spread of diphtheria disease. Diphtheria is an infectious disease caused by the bacterium Corynebacterium diphtheriae. This model is divided into six compartments, namely population of susceptibles (????), population of latent (L), population of infected with symptoms (Is), population of infected without symptoms (Ia), population of recovered with full immunity (Rf) and population of recovered with partial immunity (Rp). Two optimal controls are applied in the model, namely vaccination and treatment. The problem of optimal control is solved by using Pontryagin's minimal principle, which consists in solving a set of necessary conditions that must be satisfied by the optimal control and its associated state. The numerical method used to solve the optimal control problem is the forward-backward sweep method. Based on the results of numerical simulations, both controls should be administered in large numbers and continuously since the beginning of observation in order to reduce the number of diphtheria infected population and to control the spread of diphtheria.
Optimal Control Mathematical Model of Covid-19 With Social Distancing and Therapy Effect Strategies Dwi Meldya Lestari; Kasbawati Kasbawati
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 10, No 2 (2022): Juli
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v10i2.35846

Abstract

This article presents the mathematical modeling of covid-19 spread with optimal control that aims to observe the dynamics with social distancing and therapeutic effect. We use two control functions, namely  to minimize the susceptibility to move to the carrier population and  to maximize the severe symptom to move to the recovery population. Numerical solution using the forward-backward sweep method with Runge Kutta 4th order, numerical simulation on the optimal control problem. The simulation results obtained are the best strategy for controlling COVID-19 disease.

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