bluuebunny/crossref_metadata_2025 huggingface dataset:
Prediction of forest fire using ensemble method
Authors: Rosadi D , Andriyani W.
Published: June 2021

In this paper we consider the application of ensemble classification method, which is called as the Adaptive Boosting (AdaBoost) method, to predict the occurrences of forest fire. To illustrate the method, we consider the application of the method using the same public data set, which has been used in the previous studies, but the ensemble approach is not considered in these studies yet. We also compare the performance of the ensemble method with several other classical classification methods, such as the Decision tree and SVM method. All computation are done using open source software R. We find that in the empirical study, the hybrid algorithms between the fuzzy c-means clustering and the ensemble approach will outperform the other classification methods considered in the study.
Reservoir water availability potential assessment using SARIMA modeling of monthly local rainfall data
Authors: Kartono K. , Purwanto P. , Suripin S.
Published: June 2021

The uncertainty of water availability in rainfed reservoirs is one of the impacts of climate change which has become a serious environmental problem in reservoir management. The accuracy of local rainfall prediction is required in planning a sustainable reservoir management strategy. This study aims to construct a monthly local rainfall forecasting model to assess the potential water availability in the reservoir. The SARIMA (Seasonal Autoregressive Integrated Moving Average) forecasting techniques are used in this study to predict local rainfall based on daily rainfall data for the 2007-2019 period at monitoring stations in Gembong Reservoir, Pati, Indonesia. The results showed that the SARIMA model is a good forecasting model according to the MASE (Mean Absolute Scaled Error) criteria. Forecasting using the SARIMA model shows an increase in the accumulated average local rainfall, so there is a potential for water abundance in the reservoir. Reducing sedimentation in reservoirs and maintenance of sustainable reservoir infrastructure is one of the mitigation strategies that need to be prioritized to increase the carrying capacity of the reservoir.
Mathematical model SI-SIRT of avian influenza epidemic with treatment on human
Authors: Kharis M , Prasetyo T A , Waluya S B
Published: June 2021

Avian influenza is a terrible respiratory infectious disease caused by the avian influenza virus. The great concern of the world’s health experts is the possibility of spreading avian influenza and becoming an uncontrollable pandemic. The study’s purpose was to derive, analyze, and interpret the mathematical model’s simulation of the avian influenza epidemic with treatment on humans. This paper constructed a mathematical model formed by SI-SIRT (Susceptible poultry, Infectious poultry, Susceptible human, Infected human, Treated human, Recovered human). We obtained a reproduction number (R0) from Analyzing the model. R0 is a formula to determine whether the disease will disappear or spread over in the future. The free disease equilibrium point was local asymptotically stable if R0 < 1, and the endemic equilibrium point was local asymptotically stable if R0 > 1.
On the Poincar’e-Lindstedt perturbation method for a Non-Linear Rayleigh Oscillator with periodic damping coefficient
Authors: Waluya S B , Rosyida I. , Kharis M
Published: June 2021

In this paper the Poincar’e-Lindstedt perturbation method will be applied to analyse an oscillator with Rayleigh type with Periodic Damping Coefficient. The mathematical model of the oscillator describes flow-induced vibrations in a uniform wind field. The horizontal cylinder supported by springs as a model can be designed vibrate in vertical direction. It will be studied a solution approximation of the oscillator by using Poincar’e-Lindstedt perturbation method. The basic idea of the Poincar’e-Lindstedt perturbation is that from the simple harmonic oscillator, the period of oscillation depends on the amplitude of the motion. The Lindstedt perturbation expansion allows the frequency to adapt to the nonlinearity by defining the “stretched time variable” The periodic solution of Limit cycle will be studied in this paper.
The acceptability of concrete mathematics manipulative by children
Authors: Hidayah I , Masrukan  , Isnarto  , Asikin M , Margunani
Published: June 2021

Concrete Mathematics manipulative (APM) are developed to assist children in learning Mathematical concepts and facilitate children’s Mathematics activities to support children’s higher-order thinking skill (HOTS) development. As a stage in development research, one of the study’s objectives was to find out concrete APM product’s acceptability by children. Acceptability was measured by the TAM approach. The research subjects were Primary School-Junior High School children who were allowed to use these products in schools, learning groups, and playgroups, totaling 170 children. The variables studied were perceived ease to use, perceived usefulness, attitude toward using, and behavioral intention. The statistical analysis applied was Covarian Based Structural Equation Modelling (CB-SEM) with a hybrid model (a CFA and model structural) and used Maximum Likelihood estimation. The CFA first-order model’s estimation and evaluation results showed that the research model had fulfilled good fit criteria, and a reliable variable is PEU. Meanwhile, Estimation and Structural Model Evaluation showed that the most significant influence was on PU and PEU’s relationship towards ATU. The conclusion was that the usefulness and ease of use perceived by children affected the attitudes, which further mediated using, which was quite high (87%).
Conceptual understanding and productive disposition in trigonometry through generative learning
Authors: Dewi I L K , Zaenuri  , Dwijanto  , Mulyono  , Waluya S B , Rochmad
Published: June 2021

This article aims to analyse how conceptual understanding and productive dispositions in trigonometry through generative learning, using a qualitative research design. Participants of this study were 20 students of the level 1 Mathematics Education Study Program of the University of Swadaya Gunung Jati, who took the Intermediate Selecta Capita course and received trigonometry material. The data analysed through 3 stages, namely data reduction, data display, and conclusion drawing. This study indicates that the student’s conceptual understanding can represent the information obtained from the problems given; it is just that when performing algebraic operations still encounter obstacles. Students’ constraints in performing algebraic operations on trigonometry can be due to a lack of understanding of the concepts in algebraic operation material. Confidence in studying and providing answers to student problems shows that students’ productive disposition is still not optimal.
Analysis of mathematical didactic situation constructed by prospective teachers based on learning trajectory
Authors: Prabowo A , Suryadi D , Dasari D
Published: June 2021

The key to the success of a prospective teacher in conducting teaching practices is the didactic situation that is built. If the first step is successful, then the learning process will go well. This study aims was to analyse the mathematical didactic situation built by prospective teacher based on its learning trajectories. This research was a descriptive qualitative study, with the subject of the study being 3 prospective teacher students who have been practicing teaching in class in PPL activities or taking data for their final project. Data was generated from learning documents, Teacher’s books, and interviews with subjects. The results of the study indicate that there were criteria’s for the resulting didactical mathematics situations, as well as the presence of obstacles in lectures. It was recommended to conduct research to build meaning and build new designs that encourage prospective teacher students to build constructive mathematical didactic situations.
Development of pool garden learning media on the topic of the derivative of polynomial functions for class XI students
Authors: Astutik D , Qohar A
Published: June 2021

One of the factors that determine the success of learning is the existence of appropriate learning media. The topic of the derivation of polynomial functions is one of the topics in mathematics that is considered difficult by students. So that on this topic, the creativity of teachers is needed in making learning media. This study aims to develop learning media for polynomial function derivative materials in the form of realistic visual media to instill the concept of polynomial function derivatives, which are named ‘Pool Garden’. This research is a development research that consists of three stages, namely the analysis of products developed, developing initial products, and product trials. The subjects of this study were 30 students of class XI Social Science, Batu City Madrasah Aliyah. The expert test results obtained a validity score of 3.45 which means that the learning media are valid and ready to be tested on a large scale. After a large-scale trial the student questionnaire results were obtained with an average value of 3.59, which means that practical and effective learning media are used in learning. Learning media has also been shown to increase student motivation in learning the concept of derived polynomial functions.
Factors of inhibit the mathematical critical thinking process of junior high school students
Authors: Rochmad  , Kharisudin I , Ardiansyah A S
Published: June 2021

Students had difficulty in thinking critically mathematically. In faced of problems of simple shapes on plane geometry, students had difficulty in solving them. This is caused students had less able to think critically mathematically. Indicators of mathematical critical thinking in this study included clarification, assessment, inference, and strategies. First of all, a test was carried out on 25 students in one class, grade VIII MTsN 1 Temanggung. The average critical thinking ability is 62 (in interval 0-100). Furthermore, the research subject were selected 6 students representing the entire class, a more in-depth study was conducted through interviews. Based on the results of the thinking process in solving problems showed that students were low level in mathematical critical thinking due to: students feeling satisfied with the answered of problems; did not checking his/her work; did not accustomed to practice thinking deeply in solving problems; lacked of mastery of the concepts contained in the problems; and had difficulties in connecting between concepts.
Instrument development design for metacognitive determination in calculus problem solving
Authors: Sugiharni G A D
Published: June 2021

This research main objective was to produce an instrument development design for metacognitive determination in calculus problem solving. This study used a development approach with the research and development method. The subjects involved in this study were two psychologists and three education experts. Observation, interviews, literature study and documentation, those were data collection techniques used in this study. This study used qualitative descriptive technique as the data analysis technique. The results of this study indicated a questionnaire design. It was the indicators of instrument development design for metacognitive determination in calculus problem solving. It had the percentage of effectiveness standards classified as good and very good criteria based on the five-scale categorization.
Flat plane geometry learning media through macromedia flash CS3 program in online mathematics learning
Authors: Nurjanah  , Dahlan JA , Wibisono Y
Published: June 2021

A learning media is one of the many tools that are being developed by teachers to help students learn mathematics. Because of that, the learning media must be designed to fit the students’ characters. Junior high school students need a learning media that fits with the level of concrete thinking so that students are able to adapt the mathematical knowledge that are beginning to get abstract. For this purpose, scientists have tried to improve the learning media that are technology based using Adobe Flash CS3 program. The technology-based learning media using Adobe Flash CS3 have been tested in online learning practices which took part 124 students from several junior high schools in Bandung, as well as math teachers as observers. The results of this implementation show that improved computer-based learning media are responded positively by students. The students feel motivated to study, focused, and highly curious. This response is supported by their comments that the improved media is appealing, well organized system, and the animation has helped them to understand the material.
Development of STEM-nuanced textbook to improve students’ mathematical communication skill
Authors: Asikin M , Nurhidayat M F , Ardiansyah A S
Published: June 2021

This research is development research that aims to develop and to know the quality of Science, Technology, Engineering, and Mathematics (STEM)-nuanced teaching materials that were meet the suitability of characteristics, validity, readability, and improvement of students’ mathematical communication ability. This research uses the stages of Research & Development, including potential and problems; data collection; product design; product test (readability test); trial test; and final product. The results showed that the teaching material met the suitability of the characteristics. The results of the validity test showed a percentage of 88.54%. The readability test results showed a percentage of 63.65%. Analysis of pretest and posttest showed that teaching materials increased mathematical communication ability with the n-gain score of 0.44 in the medium category. Thus, the development of Science, Technology, Engineering, and Mathematics (STEM) nuanced teaching materials is qualified because suitability in characteristics, valid to use, easily understand, and can increase students’ mathematical communication ability.
CB-BL model (challenge based on blended learning) for mathematical creativity
Authors: Ardiansyah A S , Mulyono  , Mashuri  , Fiyanti R A , Hamidah F S
Published: June 2021

To improve students’ mathematical creativity, which is the competency in the industrial revolution 4.0 and is in 4-C and 5-C, it is necessary to have learning innovation for it. Challenge-based on blended learning (CB-BL) is a framework that integrates challenge-based learning and blended learning so that the need for face-to-face learning and learning using IT is satisfied. This research is a literature study research with the research aims to describe the CB–BL model steps that consist of The Big Idea, Essential Question, The Challenges, Solution – Action, and Assessment. The Big Idea and Essential Question are carried out face-to-face such that students know the learning objectives through solving challenges. The Challenges and Solution – Action are carried out online by providing the instructional video, textbook, and discussion forum integrated with the learning management system to solve the challenges. The last step is Assessment, which consists of Publishing Student Sample and Reflection, carried out face-to-face. In this stage, students publish the results of solving challenges and through self-reflection based on learning experiences they have carried out. By integrating challenge-based learning and blended learning, mathematics creativity can be developed. It is also a learning model that can be applied during New Normal.
Mathematical reasoning ability of junior high school viewed from logical mathematical intelligence
Authors: Prastika V Y A , Riyadi  , Siswanto
Published: June 2021

Mathematical reasoning is crucial especially at school since students need to think logically and be able to draw new conclusion based on evidence. This is a descriptive qualitative research which aims to analyze mathematical reasoning ability viewed from logical mathematical intelligence with 32 eight graders of Junior High School of 01 Jiwan involved. Instrument used is mathematical reasoning ability and logical mathematical intelligence test. The result of the research shows that students with high logical mathematical intelligence were able to present mathematical statement (88.89%), compile evidences or create solution (81.48%), design the characteristic or relationship pattern of mathematical phenomena (74.07%), and describe the logical conclusion related to ideas and their relationship (77.78%). Students with medium logical mathematical intelligence were able to present mathematical statement (60%), compile evidences or create solution (71.11%), design the characteristics or relationship pattern of mathematical phenomena (55.56%), and describe the logical conclusion related to some ideas and their relationship (57.78%). Students with low logical mathematical intelligence were able to present mathematical statement (58.33%), compile evidences or create solution (54.17%), design the characteristics or relationship pattern of mathematical phenomena (50%), and describe the logical conclusion related to some ideas and their relationship (45.83%).
The development of the spatial visual-oriented geometry test to measure the creative thinking skills of elementary students
Authors: Wijaya H T , Sunardi  , Yudianto E , Cahyanita E , Aini N R
Published: June 2021

This research is a qualitative descriptive research by using 4D development consisting of the Define, Design, Develop, and Disseminate stages. The research was carried out to develop a spatial visual-oriented geometric test to measure elementary students’ creative thinking skills. The creative thinking level of each student has different categories based on the fluency, flexibility, and novelty. The subjects of this research consisted of 5 students from 30 fifth grade students from elementary school which were selected based on the van Hiele’s level ability category of each student. Operationally, the steps of this research included the preliminary step of research, data collection, and data analysis. The data of this research was obtained by using tests, observation, and interview. The data of the students was obtained by conducting a learning outcome test. The results has showed that 5 students who met the category of students’ creative thinking had a variation on the percentage of the creative thinking level by using a spatial test, namely 40%, 20%, 20%, 20%, 20%, which were respectively categorized as very creative (level 4), creative (level 3), quite creative (level 2), less creative (level 1). There were 2 of 5 students who were at the same level, namely as very creative (level 4) but had differences in answering.
Exploring the elementary school’s teacher’s perception of students ‘mathematical thinking in mathematics teaching
Authors: Kurniasih A W , Hidayah I , Asikin M
Published: June 2021

Mathematical thinking serves as a core of mathematics instruction in schools. These research goals were identified 1) The elementary school’s teacher’s perception about thinking based on Bloom’s Taxonomy in mathematics instruction, and 2) The elementary school’s teacher’s perception of scientific approach in mathematics learning. This research was descriptive-qualitative. Data were obtained by using open-ended questionnaire methods for nine fifth-grade elementary teachers and passive participation observation toward two fifth-grade elementary school teachers in Semarang. The result 1) the elementary school’s teacher’s perceptions about the students’ thinking is that in theory and practice, the teacher has sufficient knowledge and facilitates the students’ thinking of remembering aspect and applying optimally to the students, and 2) Elementary school teachers’ perception about the scientific approach is in theory and practice the teacher understands and applies the observing, questioning, associating/processing information/reasoning, and communicating facilitations, but practically of collecting information, teacher’s facilitation is still less varied. The professional teachers noticing students’ mathematical thinking must be studied and developed in mathematics teaching.
The effect of mathematical matriculation as the basis for calculus lectures: a case study of electrical engineering, UNISNU Jepara - Indonesia
Authors: Sulistyo L , Junaedi I
Published: June 2021

Mathematics is applied in all fields, 70% stated it is difficult, scary, and the survey results concluded that mathematics is a scourge for most students of all levels: Elementary School to College. Based on the results of the initial questionnaire student matriculation displeasure in mathematics starting in grade 3 elementary school, because arithmetic problems began to be difficult, the teacher was less familiar, dominant in learning and lacking in guidance, conditions tended not to change until high school. By matriculating researchers and acting as a lecturer, making the initial matriculation material as tension therapy, student anxiety in mathematics with a change in the mathematics mindset is fun, namely by using active and meaningful learning methods for students. With a growth mindset and meaningful learning, matriculation has implications for good mastery of students’ mathematical concepts.
The abstraction of junior high school student in learning geometry
Authors: Sahrudin A , Budiarto M T , Manuharawati
Published: June 2021

This paper is prepared to describe the abstraction of junior high school students in studying geometry, in this case studying cubes and constructing cube nets. Abstracts were obtained through interviews that aim to get a picture of the abstraction that occurs in students in learning cube activities and constructing cube nets which are part of learning geometry. The data is presented in the form of an interview transcript which explains how students learn the cube pattern and constructing cube nets by remembering previous learning activities and imagining the shape of the cube pattern and cube nets in their mind which is then visualized. Based on these data, it can be concluded that the abstraction of junior high school students in geometry learning activities is an abstraction which is an epistemic action which includes recognition, build-whit and constructions that are interrelated with one another.
Mathematical creative thinking ability viewed from students’ learning interest and adversity quotient through creative problem-solving learning model
Authors: Agoestanto A , Masitoh S
Published: June 2021

The study aims to: (1) find the increase of mathematical creative thinking ability through the CPS learning model; (2) find the increase of mathematical creative thinking ability through the CPS learning model viewed from learning interest; (3) find the increase of mathematical creative thinking ability through the CPS learning model viewed from Adversity Quotient (AQ); (4) determine the effect of learning interest and AQ students towards mathematical creative thinking ability; and (5) describe mathematical creative thinking ability viewed from learning interest through the CPS learning model. This study used a mixed-method. The results showed that: (1) students’ mathematical creative thinking ability increased through the CPS learning model; (2) students with high interest increased moderate creative thinking ability, students with moderate interest increased moderate creative thinking ability, students with low interest increased creative thinking abilities low; (3) students with AQ climber, camper, and quitter increased moderate creative thinking ability; (4) there was a significant influence between student’s learning interest and AQ towards mathematical creative thinking ability; and (5) students with high interest at level 4 of mathematical creative thinking (LMCT), students with moderate interest at level 3 of LMCT, and students with low interest at level 1 of LMCT.
Numeracy of prospective elementary school teachers: a case study
Authors: Yustitia V , Siswono T Y E , Abadi
Published: June 2021

Numeracy is the ability to access, use, interpret and communicate information and mathematical ideas related to numbers in a particular context. Therefore numeracy skills are needed for a prospective elementary school teacher. The purpose of this research is to describes prospective elementary school teachers’ numeracy. This type of research is a qualitative descriptive study. This study’s subjects were prospective elementary school teachers’ from Universitas PGRI Adi Buana Surabaya, represented by one individual with low mathematical ability. Data were obtained through numeracy tasks. Prospective elementary school teachers with high ability can identify, find or access some mathematical information relevant to the purpose, involve using known mathematical procedures and rules, and develop opinions about that information. However, there are some errors in communicating according to the content based on its interpretation results. Prospective elementary school teachers with low ability have been able to identify, find or access some mathematical information relevant to the goal. Still, they have not been able to involve procedures and develop opinions about the information. Based on this study’s results, arithmetic needs to be a topic of attention to improve mathematics learning achievement in the future.
Descriptive analysis of online mathematic learning implementation that oriented to HOTS during Covid-19 pandemic
Authors: Puspa R D , As’ari A R , Sukoriyanto
Published: June 2021

This research is qualitative research aims to describe the implementation of online mathematics learning that oriented to Higher Order Thing Skills (HOTS) during covid-19 pandemic. Beside that this study aims to describe students’ HOTS abilities during the implementation of online mathematics learning. This research was conducted at SMK Telkom Malang. The online mathematics learning was implemented in class X RPL 4. There are 36 students that are included in this online learning. Class of X RPL 4 was selected as subject of this study caused by two reasons. The reasons are the material about trigonometry has been studied in this class and the mathematics abilities of students in this class are balanced among low, medium and high ability. The learning model that is implemented in this research is discovery learning. Discovery learning consist of 6 stages, namely stimulation, problem statement, data collection, data processing, verification and generalization. Data collection in this study was carried out by using observations, interviews and students’ work results This study presents description of teaching and learning activities that stimulate students’ HOTS in each stage of discovery learning. Beside that, this study indicates that online mathematics learning using discovery learning can stimulate students’ HOTS.
Mathematical literacy of students in solving PISA-like problems based on cognitive styles of field-dependent and field-independent
Authors: Taufik A R , Zainab N
Published: June 2021

This qualitative-descriptive study aims to describe students’ mathematical literacy in field-dependent and field-independent styles in solving PISA-like mathematics problems. Based on the GEFT test, math ability test, and were of the same gender and communicated well, two students were obtained as subjects. Mathematical Literacy Task-based Interview was used to collect student’s mathematical literacy data. The results indicated the field-dependent student, when formulating, was able to identify information by mentioning using sentences in the questions and represented using verbal, symbols, and mathematical models representation. He was able to design and implement strategies, use procedures and mathematical reasoning when looking for solutions, but he was less precise in determining problem-solving. In interpreting, he was able to interpret mathematical solutions contextually, check again by working backward. On the other hand, when formulating, the independent field student was able to identify the information required by mentioning using their own language and using verbal representations, symbols, and appropriate modeling. In employ, he designed and implemented concise strategies, procedures, and mathematical reasoning to find solutions. In interpreting, he interpreted mathematical solutions in a profound contextual manner and checked again by repeating the problem-solving process.
Development and effectiveness of mobile learning teaching materials to increase students’ creative thinking skills
Authors: Yaniawati P , Supianti I I , Fisher D , Sa’adah N
Published: June 2021

This study aims to develop mobile learning (m-learning) teaching materials on straight-line equations and analyze its effectiveness in increasing junior high school students’ creative thinking skills. The method used is the R&D developed by Alessi and Trollip. The stages of this research include planning, design, and development. The planning stage includes determining the scope, identifying existing teaching materials and student characteristics, and collecting references. The design stage includes analysis of the material concept, making flowcharts and storyboards of teaching materials. The development stage includes preparing teaching materials through expert validation and two trials, making mobile learning applications, and evaluating teaching materials to analyze their effectiveness. The teaching materials were evaluated by material, and media experts then tested on 30 students. The m-learning teaching material developed is an Android smartphone application that students can use as a support source for learning mathematics. This study’s subjects were all class VIII Yastrib Junior High School students, as many as 30 people. The results showed that the m-learning teaching materials on straight line equations developed were feasible to use. Their effectiveness in developing creative thinking skills in the learning process was considered adequate for students with an effect size value of 2.51, which was in the very high category.
Teaching spatial geometry with geogebra: can it improve the problem-solving skills of prospective mathematics teachers?
Authors: Pamungkas M D , Rahmawati F , Apriliyani M N
Published: June 2021

Research aimed to obtain an overview of improving prospective mathematics teacher students’ problem-solving skills by implementing GeoGebra in spatial geometry lectures. The research will be carried out at Universitas Tidar in the second-semester students of the Mathematics Education study program’s geometry class. This study used a quasiexperimental method, with a pretest-posttest non-equivalent control group research design. 71 students were selected as research subjects who were divided into two groups, one group as an experimental group (36) who received GeoGebra-based spatial geometry lectures and one group as a control group (35) who received conventional spatial geometry lectures. The instruments used were the lecture implementation observation sheet, pretest, post-test, and student response questionnaires after using GeoGebra during lectures. Based on the posttest results, the experimental group’s problem-solving skills increased significantly compared to the medium category’s control group. Besides, the description of the response questionnaire results also shows that there are positive impacts obtained by students, including increasing motivation and interest during lectures.
Integration of 4C competencies in online mathematics learning in junior high schools during the covid-19 pandemic
Authors: Suyitno A , Suyitno H , Sugiharti E
Published: June 2021

Critical thinking, collaboration, creativity, and communication (4C), need to be owned by students. The purpose of this study: To analyse the role of junior high school mathematics teachers in developing 4C competencies. The methods: A qualitative approach is used. The research team collaborated with SMPN 24 Semarang. The research subjects were mathematics teachers of SMPN 24 Semarang. Data analysis: data reduction, data exposure, data interpretation, and conclusion drawing. The data were obtained from observations, interviews with research subjects, and FGD. The results: (1) The role of the Mathematics teacher in cultivating 4C was carried out by providing open-ended questions to students and inviting students to discuss them in small groups. (2) Teachers need to be trained to develop online learning so that mathematics material and 4C competencies can be integrated and absorbed by students optimally. In conclusion, (1) open-ended questions can be used by mathematics teachers as a means of interpreting Mathematics lessons with 4C competencies through student discussions in small groups. (2) During the Covid-19 pandemic, teachers need to be trained to develop online learning so that mathematics materials and 4C competencies can be integrated and absorbed by students.
Realistic-science, technology, engineering, and mathematics assisted by google classroom as a learning innovation in the new normal era to improve statistical thinking skill
Authors: Ardiansyah A S , Novita N A , Zhintya H , Kurnianto D
Published: June 2021

Based on government policies regarding the implementation of learning from home, it is necessary the learning innovation to continue learning in the new normal era by utilizing existing technological advances. In this digital era, statistics thinking is important because it is needed to be able to interpret and understand and make good decisions from the statistical data obtained. From these problems, one of the innovations that can be done is by implementing Realistic Mathematics Education integrated Science, Technology, Engineering, and Mathematics assisted by Google Classroom (R-STEM-GC). This paper aims to determine the effect of R-STEM-GC learning on students’ statistical thinking skills. This paper uses literature review method research that identifies, assesses, and interprets all findings on a research topic to answer existing research questions. It can concluded that realistic learning was more effective in terms of students’ mathematical reasoning and communication than conventional learning; learning with the application of STEM can improve students’ problem solving abilities compared to conventional learning; and the use of google classrooms that can improve communication skills. From the results of this analysis, the application of R-STEM-GC learning can be an innovative solution in improving students’ statistical thinking skills in new normal era.
Learning barriers and student creativity in solving math problems
Authors: Supandi S , Suyitno H , Sukestiyarno Y L , Dwijanto D
Published: June 2021

Innovation and creativity are essential for all disciplines and learning activities. Creative processes, such as imagination, are a crucial component in understanding the learning experience of mathematics. Approaches in teaching and learning are considered in this study to foster student creativity and innovation in understanding cases of implementing differential equations. The objects of this research were 154 students. Subjects were selected based on barriers to learning and academic achievement. The selected subjects represent the categories of students with very not inhibiting, not inhibit, pretty inhibit, and inhibit. Selected subjects were given two different types of problems (ordinary mathematical problems and word problems). The results showed that the way students work in getting answers to word questions was more varied than routine mathematical problems. Students’ imagination of understanding the questions and answers provides a different perspective. These results conclude that the approach to learning and evaluation using story questions increases students’ mathematical imagination in education.
Analysis of students difficulties in completing mathematical communication problems
Authors: Wandari W , Anggara B
Published: June 2021

Mathematical communication is one of the skills that students are expected to achieve in learning mathematics. Mathematical communication can help students express mathematical ideas in their own language that can be understood by others. Students not only express mathematical ideas in a nutshell, but students must be able to explain with mathematical arguments and their reasons. This study revealed the students ‘ability in solving mathematical communication problems and identified students’ difficulties in solving mathematical communication problems. This research is a qualitative research involving 45 students of class XI. Students’ difficulties in solving mathematical communication questions were analyzed from the results of tests of mathematical communication skills and student interviews. The results showed that students still had difficulties with mathematical communication problems on the indicators of explaining mathematical ideas or situations in writing into a mathematical model, there were still many students who had not been able to solve problems that required deep thinking.
Auditory, intellectually, repetition with ethnomathematics nuance in improving students’ mathematical problem solving ability
Authors: Zaenuri  , Medyasari L T , Dewi N R
Published: June 2021

The objective was to analyze students’ skill to solve mathematical problems in Auditory, Intellectually, Repetition (AIR) learning with ethnomathematics nuance. This research is an experimental quantitative study. The population in this study were all class X SMA Negeri 5 Semarang 2019/2020. The sampling technique in this study is cluster random sampling. The sample in this study were X MIPA 10 as an experimental class and X MIPA 7 as a control class. The techniques of collecting data in this study consisted of test, observation, and documentation. Data analysis in this research used independent t-tests and descriptive. The finding proved that AIR learning with ethnomathematics nuance was effective for students’ problem solving ability. The problem solving ability of students who are taught with AIR learning with ethnomathematics are better than students who are taught with expository learning, and there is an increase in the ability of students who are taught with AIR learning with ethnomathematics nuance.
Abstraction mathematics concepts: learning innovation based on heritage culture during the pandemic COVID-19 era
Authors: Fiantika F R , Sugianto F A , Jannah H N , Zhoga E F E , Junior F A , Perdani C W
Published: June 2021

Indonesia is archipelago country that has many heritages of culture and legacy. In the pandemic era, we need creative teacher to develop innovative learning. This research takes innovation from local culture, namely “Relief temple” that is used to be source of alternative study during pandemic. Innovative temple relief learning aims to grow up sense of nationalism pride and to strengthen self-awareness as a nation based on Pancasila. Tegowangi’s Temple Relief is used as media of learning that is managed in such a way to dig the mathematics concept of student. this is a descriptive and qualitative research. the subject of this research is fourth grade of elementary school student. the result of this research is description of Tegowangi’s temple relief. the subjects name the type of motif at the relief and mention type of geometry’s shape at the relief. this research found a connection towards multi discipline science in learning hat used the Tegowangi’s relief among mathematics, history, and language.
How is the mathematical critical thinking disposition of vocational school students in online learning during the COVID-19 pandemic?
Authors: Wiradinata R , Jaja  , Rosita C D , Amalia S
Published: June 2021

This study aims to determine the mathematical critical thinking disposition of vocational school students in mathematics learning during the COVID-19 pandemic in terms of six indicators, i.e., 1) truth-seeking, 2) open-mindedness, 3) analyticity, 4) systematicity, 5) self-confidence, 6) curiosity. The research methodology used is a qualitative methodology with a case study research design. The research sample was vocational students in Cirebon and Indramayu who were carrying out online learning. The research data were taken by providing a mathematical critical thinking disposition questionnaire distributed online via Google Form. This study shows that the mathematical critical thinking disposition of vocational school students during the COVID-19 pandemic on the truth-seeking indicator got a percentage of 57.60% in the excellent category, the open-minded indicator got a percentage of 76.04% in the excellent category, the systematic indicator got a percentage of 72.79 % in the excellent category, the analytical indicator got a percentage of 66.23% in enough category, the confidence indicator got a percentage of 62.07% in enough category, and the curiosity indicator got a percentage of 68.49% in enough category. The achievement of all indicators got a percentage of 67.19% and is in the good category. This means that students have good attitudes or tendencies to think rationally and reflectively to make decisions under certain conditions.
Make questions as a stimulus for students to help them carry out their Polya’s step in solving problems
Authors: Zamnah L N , Zaenuri  , Wardono  , Sukestiyarno
Published: June 2021

Problem solving ability is very important to be mastered by every one. Not only because most of human life will deal with problems that need to be solved, but problem solving can also increase analytical power and can help to solve problems in various other situations. problem-solving ability is also one of the main goals of learning mathematics. One solution to solve mathematical problems is the Polya’s step. Polya’s step is a problem-solving technique which was created by mathematician named George Polya. This literature review aims to discuss to make questions as a stimulus for students to help them carry out their polya’s step in solving problems. Polya’s step consists of: 1) understanding the problem; 2) devising a plan; 3) carrying out the plan; and 4) looking back.
Develop learning methods imr (integrated material realistic) alternative mathematics learning during a pandemic
Authors: Rusmana I.M. , Zainuri  , Wardono  , Nulhakim A.L
Published: June 2021

The learning methods used by teachers in schools in Serang City are very ineffective, especially during the pandemic. This is because not integrated content of material in one subject with other subjects. Never mind between subjects, sometimes the material is not well integrated. The purpose of this study is to provide an alternative learning method during a pandemic, namely a method that integrates material with the realities of life which is abbreviated as IMR (Integrated Realistic Material). The method in this research is Research and Development (RnD) with the ADDIE model. In making this learning method according to the stages from the ADDIE study. The results of this study are in the form of learning methods that are integrated with the realities of life during the pandemic.
Application of information technology and communication-based lesson study on mathematics problem-solving ability
Authors: Bintoro H S , Zaenuri  , Wardono
Published: June 2021

The purpose of this research is (1) to test whether there was a difference in the average students’ mathematical problem-solving abilities before and after implementing information and communication technology-based lesson studies and (2) to test whether students’ mathematical problem-solving abilities after learning through the application of technology information and communication-based lesson study to achieve learning completeness. This research was an experimental type using a quasi-experimental design and refers to the one group’s pretest-posttest design. The population in this research were students of the Mathematics Education study program Universitas Muria Kudus. The sample of this research is the first semester students. The test technique is used as a research data collection technique. Technique tests are carried out to measure students’ mathematical problem-solving abilities. The data analysis in this research includes the sample group average difference test and learning mastery test. Based on the data analysis, the results of the mathematical problem-solving ability after implementing lesson study based on information and communication technology are better than before applying and the mathematics problem-solving ability of students after learning through application after implementing lesson study based on information and communication technology reaches learning completeness.
Implementation of Learning Management System (LMS) in mathematics learning
Authors: Hadi T S , Mastur Z , Wardono  , Khotimah
Published: June 2021

The world of education during a pandemic is forced to use an online learning system. This is evidenced by the issuance of regional and central regulations relating to online learning rules. There are many platforms that can be used to do online learning, one of which is edmodo. The edmodo platform can be used more flexibly with the help of laptops and cellphones that students often use, besides that, it does not require much quota. The research method used is a mix method by combining quantitative and qualitative methods. The population of this study is students from University of Serang Raya. The object of the research was students of civil engineering, unsera in engineering mathematics courses. The result of this research is that the experimental class is better than the control class in terms of the mean value. The application of learning uses a learning management system, namely students upload assignments, download material, collect assignments and ask questions in the comments column related to the material provided by the lecturer.
Implementation of TTW and TPS learning models to mathematics learning outcomes in terms of students’ mathematical communication ability
Authors: Kusuma A P , Zaenuri  , Wardono
Published: June 2021

The goal of this study was deciding if the learning model has an impact on the achievement of mathematics learning in terms of student communication abilities in mathematics. The models being compared are the Think Talk Write learning model, the Think Pair Share model, and direct learning. The analysis used a quasi-experimental testing procedure. The population is all students of class VIII SMPN Wonosobo Regency in the academic year 2018/2019. The sample consisted of 269 students and was divided into three groups: 90 in the first experimental class, 91 in the second experiment class and 88 as the control class. The data of the study were analyzed using a two-way analysis of variance with unbalanced cells. The TTW learning model produces effective instruction in mathematics than the TPS and direct learning paradigm, and the TPS learning model produces better mathematics learning achievement than the direct learning model. These results show the same results for each group of communication abilities in mathematics. 2) Students with high mathematical communication abilities better math performance than middle and low income student mathematics communication abilities, and students with moderate communication abilities in mathematics have better learning performance as students with poor and intermediate mathematics communication abilities. low communication abilities in mathematics.