Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika
ISSN / EISSN : 2715-6095 / 2715-6109
Published by: LP2M Universitas Ibrahimy (10.35316)
Total articles ≅ 28
Latest articles in this journal
Published: 7 September 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 122-132; https://doi.org/10.35316/alifmatika.2021.v3i2.122-132
The increase in the number of computer viruses can be modeled with a mathematical model of the spread of SEIR type of diseases with immunity probability. This study aims to model the pattern of the spread of computer viruses. The method used in this research is the analytical method with the probability of mathematical immunity. Based on the analysis of the model, two equilibrium points free from disease E1 and endemic equilibrium points E2 were obtained. The existence and local stability of the equilibrium point depends on the basic reproduction number R0. Equilibrium points E1 and E2 tend to be locally stable because R0<1 which means there is no spread of disease. While the numerical simulation results shown that the size of the probability of immunity will affect compartment R and the minimum size of a new computer and the spread of computer viruses will affect compartments S and E on the graph of the simulation results. The conclusion obtained by the immune model SEIR successfully shows that increasing the probability of immunity significantly affects the increase in the number of computer hygiene after being exposed to a virus.
Published: 3 September 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 107-121; https://doi.org/10.35316/alifmatika.2021.v3i2.107-121
The purpose of this study is to determine a person's ability to perform mental activities mechanically in associating new information received with previously owned information (reconstruction) which is a reflective abstraction. The process of reconstructing the concepts of quadrilaterals and triangles by students uses the mental mechanism approach of APOS theory (interiorization, encapsulation, de-encapsulation, coordination). The process can be known by observing students and analyzing the results of student work, starting with determining 1 class to be given a mathematical ability test. 29 students were present when the math ability test was given. The results of the mathematical ability test were analyzed and then found 2 students of different sexes with moderate ability. The first student is male and the second student is female, hereinafter referred to as the research subject, then the research subject is given the task of quadrilateral and triangle. The results showed that female students had done all stages of reflective abstraction in APOS theory. So, that these students were at the level of relational understanding. Meanwhile, male students only did several stages in the reflective abstraction stage on the APOS theory so that these students were included in the level of instrumental understanding.
Published: 1 September 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 92-106; https://doi.org/10.35316/alifmatika.2021.v3i2.92-106
This study investigated the use of a free GeoGebra application, where the ability of a GeoGebra software application had the potential to simplify and help the teaching and learning process in the informatics management study program, Medan State Polytechnic. The focus of this research was the incorporation of conventional method-based teaching, namely using the assistance of writing instruments such as pencils, pens, and paper when describing the Venn diagram in mathematical logic courses with the help of the GeoGebra application which made it easier for students to drew circles and determine the slices and combinations on the Venn diagram. The resulted of this study were obtained from the scores of student assignments and the results of interviews conducted online with the number of respondents consisting of 44 students who successfully uploaded assignments through the SIPADI application. The value analysis obtained was compiled into tables then processed using the SPSS application using the pair test and linearity test. Based on the output obtained, it was known that the GeoGebra value obtained the average value of learning outcomes or the mean of 75.9773, while for the average learning outcomes using conventional methods or the mean of 68.9091. The number of respondents or students who took the test amounted to 44 people, Std. Deviation for GeoGebra method was 5.800092 and conventional method was 5.56909, and Std. Error Means. Based on the results of descriptive statistical tests, the average value of the GeoGebra method > conventional method was 75.9773> 68.9091, so descriptively there was an average difference between the GeoGebra method and the conventional method.
Published: 29 May 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 80-91; https://doi.org/10.35316/alifmatika.2021.v3i1.80-91
Geometry is a mathematical science that studied points, lines, planes, spaces, and the relationships of them. One of the topic is geometric transformation. The Several research found that students hadn’t understood the concept of transformation, so that it needed a teaching material especially student’s worksheet. The research aimed to develop valid, practical and effective student’s worksheet with GeoGebra on the geometry transformation in junior high school. The research method was used R&D (Research and Development) using a modification of the 4-D model. The development model consists defined, designed and developed. The results of the research indicated that (1) this product was valid according to media experts and material experts, (2) it was practical, (3) effective to be used in mathematics learning, especially geometric transformation.
Published: 25 April 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 70-79; https://doi.org/10.35316/alifmatika.2021.v3i1.70-79
The aims of this study were to develop teaching materials of Mathematic Student Worksheets in class VIII SMP using cooperative learning model type Numbered Heads Together (NHT).The type of this research were development with the ADDIE model which were carried out until the implementations and stages due to the COVID-19 pandemic. The Research subject was at SMP Negeri 8 Merauke, in the class VIII by trial sample 6 students with comparison materials. The data collections were carried out through observations, interviews, tests and questionnaires. The results of developing student worksheets are categorized as valid with a percentage value of 95%. The students responses of questionnaire were included in the practical category with an.amount of 81.7%. The teacher response questionnaire included practical criteria with a percentage of 68.75%. The results of learning observations for the first meeting obtained a percentage score of 87%, the second meeting was 80% so that it met the practical criteria. The results of the N-gain test show that student worksheets using the NHT model can improve students achievement.
Published: 19 April 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 55-69; https://doi.org/10.35316/alifmatika.2021.v3i1.55-69
Developing critical and collaborative thinking skills among learners was of significant importance in the 21st-century era. In this study, the researcher applied teaching and learning based on Research-Based Learning (RBL) to know the level of students critical thinking skill. The number of research samples was 30 students. This study used a triangulation research method, namely a combination of qualitative and quantitative methods. The quantitative method was obtained by using a learning outcome test and the qualitative method is obtained using a questionnaire and interview. Then the data that has been collected was analyzed using a t-test. Four students were chosen to represent critical thinking level 4, 13 students were chosen to represent Critical Thinking level 3, and 6 students were chosen to represent critical thinking level 2, 4 students were chosen to represent critical thinking level 1, and 3 students were chosen to represent critical thinking level 0. More subjects would be involved until the data was saturated. Students on low critical thinking were at Level 0. Based on the interpretation result of the t-test value, there was a significant difference between the control class and the experimental class, proved by the 0.000 figure in the statistical analysis. Therefore, it proved a significant difference in learning outcomes. However, the data that we obtained present a significant difference between the control class and the experimental class below 0.05. After we interpreted t-tabel = 2.04 on degrees of freedom 0.025, t-count of 0.000 was evident. Thus, a hypothesis was accepted since it was below 0.025. Qualitative methods show the results of interviews with 2 students.
Published: 15 February 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 45-54; https://doi.org/10.35316/alifmatika.2021.v3i1.45-54
In general, this study was to determine the application of the quantum teaching-learning method with the discussion method in improving mathematics learning outcomes for seventh-grade students of SMP Negeri 2 Dolok Pardamean, Simalungun Regency. This study used experimental research on grade VII students of SMP Negeri 2 Dolok Pardamean, Simalungun Regency. The research was conducted by taking samples from two classes, namely the experimental class (15 students per class) and the control class (15 students per class). The sample categories were taken from two of four parallel categories that were determined randomly (random category samples). The tool used in this study was a testing technique in the form of empirically verified paper questions. Data analysis used the t-test, first testing for normality and homogeneity. Based on the results of data processing, it was known that the application of the quantum teaching-learning model with the discussion method had a significant effect on increasing mathematics learning outcomes obtained.
Published: 11 February 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 32-44; https://doi.org/10.35316/alifmatika.2021.v3i1.32-44
The objectives of this study was to develop a mathematics bulletin media based on a realistic approach to fourth-grade elementary school students and its feasibility for use. The development model used in this research is the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) development model. The data collection technique in this study was conducted by interviewing questioner, test, and documentation. The instruments used in this research was media expert validation sheets, material experts, and teacher practitioners, practicality sheets for students and learning mastery test questions. The results of the research on the development of mathematical newsletter media based on a realistic approach are: 1) this research produces products in the form of mathematical newsletter media based on a realistic approach for grade IV elementary school students, 2) the results of the feasibility analysis of newsletter media based on a realistic approach are obtained from validation by two expert lecturers and classroom teachers. IV elementary schools obtained a mean score of 3.58 with the valid category, the results of the practicality of the product were fulfilled from the student response questionnaire got a score of 98% with very positive criteria, and the product effectiveness test was fulfilled from the learning completeness test with learning completeness reaching 100%.
Published: 9 February 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 18-31; https://doi.org/10.35316/alifmatika.2021.v3i1.18-31
Learning media is an important tool in learning proces, especially learning media that are made based on student needs and characteristics. One of learning media that is effectively applied at the primary school level is a module. This study aims to produce and determine the feasibility of mathematics learning media in the form of HOTS integrated realistic-based modules on volume building materials (cubes and blocks) as learning media for fifth grade elementary school students. The subjects of study were six students of grade V SD Negeri Sindurjan. The research method was used R&D (Research and Development) using ADDIE model. The ADDIE model consists of analysis, design, development, implementation, evaluation. Based on the results of research (1), a HOTS integrated realistic mathematics module development product is produced. (2) The validation results obtained from the evaluation of media experts by 3.20 and material experts by 3.65. From the two results, it was developed to be 3.40 or > 3.25, the very valid category. (3) The practicality questionnaire was obtained from the student response assessment of 3.40 or > 3.25 with the very practical category. Thus the HOTS integrated realistic-based mathematics module is suitable for use as a learning medium for fifth grade elementary school students.
Published: 8 February 2021
Alifmatika: Jurnal Pendidikan dan Pembelajaran Matematika, Volume 3, pp 1-17; https://doi.org/10.35316/alifmatika.2021.v3i1.1-17
One way to evaluate student learning outcomes is through question processing. However, nowadays evaluations are usually carried out using conventional methods such as a paper-based test. Even though often in the implementation of evaluations, students feel less enthusiastic about their work. This study aims to identify students' enthusiasm in solving questions through the Quizizz platform. The subjects of this study were 34 students of class XI Science 4 Senior High School 1 Tahunan. This research uses a descriptive quantitative method because shows a description of the students' enthusiasm for using the Quizizz platform as a tool for solving trigonometric questions. To analyze the enthusiasm of students in solving questions through the Quizizz platform, was carried out in three stages: 1) distributing a questionnaire with 25 question items via Google Form based on five indicators that measure enthusiasm (Response, attention, concentration, willingness, and self-involvement), 2) questionnaire data analyzed based on the answer score for each question item. Based on the research results, student enthusiasm in learning evaluation on trigonometric material through the Quizizz platform got a percentage of 62.38%. So that the Quizizz platform can be an alternative for teachers in evaluating student learning outcomes to create an atmosphere of evaluation that is fun and interesting for students to follow which will increase student enthusiasm in participating in learning evaluations.