Indonesia Conference Directory

Corresponding Author
Hamidah Suryani Lukman

Institutions
(a) Pendidikan Matematika, Universitas Muhammadiyah Sukabumi, Jl. R.Syamsudin, S.H No.50 Sukabumi, Indonesia
*hamidahsuryani[at]ummi.ac.id
(b) Pendidikan Matematika, Universitas Muhammadiyah Sukabumi, Jl. R.Syamsudin, S.H No.50 Sukabumi, Indonesia

Abstract
Project-based learning requires students to explore and combine their knowledge and skills to solve problems in groups for a certain time. Through the development of project-based teaching materials, students learn to apply theory in an activity that produces experience, so that learning is expected to be more meaningful and improve the students mathematical understanding. This study aimed to determine the validity, practicality, and effectiveness of teaching materials based on project learning to improve the students mathematical understanding, especially on the applied statistics course. The stages of this study consisted of design and development, product validation by 3 experts, limited testing of 10 students, and field testing of 97 students. The results show that the teaching material has fulfilled the valid, practical, and effective aspects used in learning because it increases the ability of students mathematical understanding by 15.8%

Keywords
Project based learning; Teaching materials; Mathematical understanding

Topic
Mathematics Education

Link: https://ifory.id/abstract/Tbv946hkCJPW

Corresponding Author
Nitta Puspitasari

Institutions
1Postgraduate of Mathematics Education Study Program, Univeritas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia.
1Program Studi Pendidikan Matematika, Institut Pendidikan Indonesia, Jl. Pahlawan No.32 Tarogong Garut, Jawa Barat, Indonesia.
2Departement of Mathematics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia.
3Progran Studi Teknologi Pembelajaran Pascasarjana, Institut Pendidikan Indonesia, Jl. Pahlawan No.32 Tarogong Garut, Jawa Barat, Indonesia.

Abstract
Asking questions is an expression of the thought process. Questions arise when someone gets new knowledge that is not in accordance with previous knowledge, through the thought process arises the question to get complete information so that the new knowledge he has becomes more meaningful. This study aims to analyze the ability of students in problem posing based on their learning style. The method carried out in this study was a quasi-experiment on 78 high school students. The results showed that there were no significant differences between students who had Auditory, Kinesthetic, and visual learning styles.

Keywords
mathematical problem posing, learning style

Topic
Mathematics Education

Link: https://ifory.id/abstract/BzreuN8Lb74A

Corresponding Author
Irfan Muhafidin -

Institutions
Universitas Pendidikan Indonesia

Abstract
The research aims to understand the ability of problem solving in Mathematical problem based on Montague Strategy. The methods of the research is descriptive qualitative methods. The data collection is examination and interview. The subject of the research is the students of senior high school in Bandung. The results of the research is one student has good ability, three students are average ability, and the last one has low ability

Keywords
Problem Solving, Qualitative, Montague Strategy

Topic
Mathematics Education

Link: https://ifory.id/abstract/6TF74EeQkmDq

Corresponding Author
Nonik Indrawatiningsih

Institutions
1Mathematics Education, FMIPA State University of Malang, Jl. Semarang No. 5, Malang 65145, Indonesia
2Mathematics Education, STKIP PGRI Pasuruan, Jl. Ki Hajar Dewantara No.27-29, Tembokrejo, Pasuruan 67118, Indonesia

Abstract
Someone who has critical thinking ability can use the exact criteria to evaluate an argument. This engages critical thinking to determine whether a claim or an argument which has been given is correct or not and whether the sentence which has been given is included an argument or not. To determine it, there must be clear evidence and logic explanation. The aim of this study is to investigate the argument in critical thinking ability. The students are asked to determine whether the information which has been given by the researcher is included an argument or not and give the reason. The information that is given by the researcher is in the form of triangle congruent evidence. The subject is the students in mathematics education who consist two people with criteria moderate (girl student) and high academic ability (boy student). This study is descriptive qualitative research. This result study was the student who had high academic ability was still not able to analyze more detail about an argument so he was called he did not have critical thinking ability. While the student who had moderate academic ability had been able to analyze that the information which was given was included an argument or not and was able to justify it so it could be concluded that she had critical thinking ability. It could decipherable that the student who had high academic ability was not sure understood about an argument.

Keywords
Argument, Critical thinking ability, evidence, triangle congruent

Topic
Mathematics Education

Link: https://ifory.id/abstract/L4D3dCu6r8Ve

Corresponding Author
Muhammad Zaki

Institutions
Universitas Samudra

Abstract
The aims of this study to describe the steps using figure tool Block Slide Factoring (Blockers) through scientific approach in 2013 Curriculum. The data extracted in this study are related to the steps of using Block Slide Factoring (Blockers) through scientific approach in Curriculum 2013 . Source of data extracted by observation teacher activity related to the use of props that are integrated in the learning scientific approach in 2013 Curriculum. Based on the results of observations, the researchers describe and disclose the steps for using Block Slide Factoring (Blockers) with scientific approach in 2013 Curriculum. Based on the analysis of the data showed thatBlock Slide Factoring (Blockers) can be operate correctly and properly reach to the stage of a mathematical formula or reach to the stage props are not used anymore, then just describe and only use techniques.

Keywords
Mathematics Teaching Tool , Scientific approach

Topic
Mathematics Education

Link: https://ifory.id/abstract/gHfu9yGnpQqa

Corresponding Author
A. Naashir M. Tuah Lubis

Institutions
1) IAIN Padangsidempuan, Sumatera Utara, Indonesia
2) Mathematics Education Program, Universitas Bengkulu, Indonesia

Abstract
Problem-solving is one of the goals of mathematics learning. Ethnomatemics-based realistic mathematics learning is learning with starting-point contextual problems that are close to students minds. This study aims to determine the effect of ethnomathematics-oriented realistic mathematics learning on problem-solving abilities. That is a type of quasi-experimental research. The study design was a nonequivalent control group. The population is SMA N 2 Kota Bengkulu in 2019. The sample of this study was 68 students from Class X MIPA A and X MIPA D. The research instrument was a test of problem-solving skills. Data were collected through tests and analyzed by covariate analysis. The results of this study are that realistic mathematics learning oriented to ethnomathematics has a positive effect on the ability to solve. The conclusion is that realistic mathematics learning with ethnomathematics orientation can improve mathematical problem-solving skills for secondary school students. We suggest that mathematics teachers can develop realistic mathematics learning tools with ethnomathematics as a starting point for learning.

Keywords
Realistic Mathematic Education, Ethnomathematics, Problem Solving Ability

Topic
Mathematics Education

Link: https://ifory.id/abstract/ADJz3NcdGEVf

Corresponding Author
Al Faris Putra Alam

Institutions
Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia

*alfarisputraalam[at]upi.edu

Abstract
This study aims to explain how factors that influence students that their answer were correct mathematically and plausible on the problem of inverse proportion concept. The subjects of this study were six students of grade 7th, a junior high school in Bandung. This study used a qualitative method. The technique of collecting data uses written tests and interviews. The result of this study analysed by using relevant theories. This implies the need for analysis of written tests and interview students as evaluation to improve learning. During the study, found factors that influence students in to finding their answers correct mathematically and plausible. These factors include students understanding related of inverse proportion concept, understanding of students related to calculating operations, understanding of students related to reading and forming tables, understanding of students in terms of graphs, and understanding of equations mathematics. Based on the results of this study concluded that students can understand the questions with plausible but these factors affect students in problem solving of inverse proportion concept so that students difficulties to find the right answers mathematically.

Keywords
Inverse Proportion Concept, Student Solution

Topic
Mathematics Education

Link: https://ifory.id/abstract/j2e8FW96TJZw

Corresponding Author
Khuzniyyatus Saadah

Institutions
a) Pendidikan Matematika, Program Pascasarjana Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1 Bandar Lampung 35141, Indonesia
*agilniyya[at]gmail.com
b) Departemen Pendidikan Matematika, Universitas Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No.1 Bandar Lampung 35141, Indonesia

Abstract
This research is aimed at investigating mathematic reasoning ability of junior high school students in South Lampung. The method of this research was descriptive. To collect data, this research administers an essay test that assesses students- mathematic reasoning ability based on six indicators, namely: (1) Work according to the rules (2) Arrange the proof (3) Transductive (4) Analogy (5) Conjecture (6) Estimating the answer In addition to the essay test, data are also collected through teachers- online questionnaires and students- interviews. The subject of this research were selected randomly, consisting of 24 mathematic teachers (four teachers given interviews) and 70 nine-grade students in South Lampung from several high, medium and low-ability schools. The result of this research showed that the average mathematical reasoning ability of students is still relatively medium to low. Students are only able to complete basic mathematical calculations based on certain rules given, but based on the classification of reasoning indicators it was concluded that students mathematical reasoning abilities were medium and low.

Keywords
mathematic reasoning, junior high school

Topic
Mathematics Education

Link: https://ifory.id/abstract/hxBr6QEdkVtX

Corresponding Author
Imam Sayekti

Institutions
a) Pascasarjana UNNES, Universitas Negeri Semarang
Sekaran, Gunungpati, Semarang, Indonesia
b) SMA Negeri 1 Pekalongan, Pekalongan
Jl RA Kartini No.39, Pekalongan, Indonesia

Abstract
The students need to give more attention to their problem solving skills. Some of them still feel difficult to interpret in suitable ways. The purpose of this study was to identify the relation between mathematics problem solving skills and self-efficacy in the Chapter Lines and Angles of the students of MTs N 2 Pemalang. The population of this research was the students of seventh grade in MTs N 2 Pemalang. By simple random sampling technique, class 7A was selected as the sample of the research. A mixed method was used, including quantitative and qualitative approach. The result of the research showed that (i) there was significant impact between self efficacy and problem solving skills in the score of the students (ii) the students with high self-efficacy answered the questions with detail and complete answers. The steps that the students did were correct and suitable with the problems. It showed that their problem solving skills were excellent (iii) the students with low self-efficacy answered the question by not giving the detailed information. It showed that they still struggled with their problem solving skills

Keywords
Self efficacy; Problem solving

Topic
Mathematics Education

Link: https://ifory.id/abstract/qkvnpDRQcrhx

Corresponding Author
Rosmaya Rosmaya

Institutions
a) Mathematic Education, Postgraduate Program, Lampung University, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
*rosmaya1209[at]gmail.com
b) Department of Mathematics Education, Lampung University, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia

Abstract
Mathematical reflective thinking ability are one of the determinants of students success in solving mathematical problems. This descriptive research aims to figure out students reflective thinking ability at the two-variable linear equations system material. The subjects of this research were Junior High School students who were selected using purposive sampling. This research involves 92 students of the eighth grade of some State Junior High Schools in Bandar Lampung. The schools were SMP Negeri 4 that has a high category with 34 students, SMP Negeri 8 that has a medium category with 28 students, and SMP Negeri 22 with low category which is 30 students. The Data was taken through reflective thinking ability test which consists of 4 essays that involved 3 indicators of reflective thinking, namely reacting, comparing, and contemplating. In order to obtain a comprehensive description related to the ability of reflective thinking in students of SMP Negeri in Bandar Lampung, the data was qualitatively and quantitatively analysed. The result of the research shows that students reflective thinking ability are still not optimal with the average score far below the reflective thinking ability, which is 51,59. It can be seen from the majority of students who still get difficulties in building a deep self-understand of problem, inability to deliver what has been understood in a certain reason, as well as inability in concluding a proper answer.

Keywords
Reflective thinking

Topic
Mathematics Education

Link: https://ifory.id/abstract/ftzQPUr2HuvY

Corresponding Author
Repanda Sayoga

Institutions
Faculty of Postgraduated studies IKIP Siliwangi, Cimahi, Indonesia

Abstract
The background of this research was that the mathematical critical thinking ability of the students is still low. Therefore, the purpose of this study was to find out the misconceptions or difficulties of students in each indicator of mathematical critical thinking ability of high school students that learned Brain Based Learning (BBL) with material in the Three Dimensions. This reseacrh used a qualitative approach with the descriptive method. The subjects in this study were the students of X-5 class or first grade of senior high school in Karawang Regency which was on a total of 32 students. The instrument of this study consisted of a test instrument of mathematical critical thinking ability and a non-test instrument in the form of an observation sheet. The results of this study shows that students almost have difficulty in carrying out tests of mathematical critical thinking skills based on the indicators tested. The indicators of critical thinking ability tested include providing simple clarification (elementary clarification), making conclusion (inference), determining strategies and tactics (strategies and tactics) to solve problems, and making further clarification (advances clarification).

Keywords
Critical Thinking; Brain Based Learning Model

Topic
Mathematics Education

Link: https://ifory.id/abstract/QfAEUjXPLu7q

Corresponding Author
Riksa Rishanif Suwitno

Institutions
Departemen Pendidikan Matematika, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*rriksarsx7[at]gmail.com

Abstract
This research is aimed at seventh-grade junior high school students with the purpose to analyze the level of mathematical communication thinking ability at the topic of algebra. This research was conducted by giving tests that can measure the ability of communication thinking mathematically and interviewing subjects based on their answers. The results obtained are then analyzed to see the students mathematical communication thinking ability. The research instrument used is a test of communication thinking ability, and interview with students. The results showed that students have a high, moderate and low of mathematical communication thinking ability at the topic of algebra.

Keywords
Mathematical Communication

Topic
Mathematics Education

Link: https://ifory.id/abstract/M86Bq2LRGxgw

Corresponding Author
Uba Umbara

Institutions
a) Department of Mathematics Education, STKIP Muhammadiyah Kuningan, Jl. Moertasiah Supomo No. 28B, Kuningan 45511, Indonesia.
*uba.bara[at]upmk.ac.id
b) School of Postgraduate, Indonesia University of Education, Jl. Dr. Setia Budi No. 229, Bandung 40154, Indonesia.
c) Department of Computer Science, Indonesia University of Education, Jl. Dr. Setia Budi No. 229, Bandung 40154, Indonesia.
d) Department of Educational Technology, Indonesia University of Education, Jl. Dr. Setia Budi No. 229, Bandung 40154, Indonesia.

Abstract
The use of ICT in mathematics learning is not something new in the current era of industrial revolution 4.0 as an effort in maximizing mathematical abilities. One of the mathematical abilities that need to be explored on is mathematical reasoning abilities. The research aims to determine the effectiveness of ICT learning developed by using Hippani Animator software on students mathematical reasoning abilities. This is a quasi-experimental study with non equivalent control group design. The experimental class is given the treatment using ICT, while the control class is given treatment with conventional method. The results showed that the mathematical reasoning ability of the experimental class students was better than the control class. These results indicate that the use of ICT in mathematics learning is effective towards students reasoning abilities.

Keywords
ICT learning; mathematical reasoning

Topic
Mathematics Education

Link: https://ifory.id/abstract/CQtDw4r8PEJG

Corresponding Author
Sri Adi Widodo

Institutions
(1) IAIM NU Metro Lampung
(2) Universitas Sarjanawiyata Tamansiswa

Abstract
This research is aimed to explore the cognitive load of learners in the learning process of rotating object volume as well as to provide alternative solutions in managing the intrinsic cognitive load, reducing the extraneous cognitive load as well as improving the germane cognitive load. This research was conducted in Muhammadiyah Purworejo Senior High School with the 3 (three) learners from XII grade as the subjects. The purposive sampling technique was used to determine the research subject. The data collecting method used were test and interview. The data were analyzed by using a qualitative descriptive analysis. This research has provided the results which show that the occurrence of intrinsic cognitive load in the learning process of a rotating object volume is caused by the amount of interactivity elements that have to be studied and the complexity of material learned. The interacting elements are Arithmetic, Algebra, the intersection between two curves, the concept and rule of integration, while the elements of material complexity are the difficulties in imagining the rotating object, and conducting the algebra operation. The occurrence of extraneous cognitive load in the learning process of rotating object volume is caused by the way of teacher delivering the meaningless materials as well as the absence of geometric illustration from the teaching performed by teacher. The next discussion is regarding the germane cognitive load in the learning process of rotating object volume, it is known that this cognitive load is very low. This condition is caused by the learning process in class that tends to be more conventional as well as the minimum activities of learners in studying the materials.

Keywords
Cognitive load; integral; rotating object

Topic
Mathematics Education

Link: https://ifory.id/abstract/pBAy2wFR3uVt

Corresponding Author
Dewi Herawaty

Institutions
1 Mathematics Education Program, Universitas Bengkulu, Indonesia
2 Mathematics supervisor, Kabupaten Seluma, Indonesia
3 Lembaga Pendidikan Einstein Learning Plus, Indonesia
4 Teacher in SMP N 11 Kota Bengkulu, Indonesia

Abstract
Algebra is mandatory learning in junior high school. That is a continuation of arithmetic with the bridge being variable. Students often have difficulty in understanding it, especially quadratic equations. The purpose of this study is how students cognitive processes in understanding the principles of quadratic equations. It was an exploratory study conducted on research subjects. The subjects were junior high school students selected based on their ability to understand concepts and principles about quadratic equations. Thats done through tests about understanding quadratic equations. There were 16 selected research subjects. They were interviewed in-depth by researchers using interview guides. Interview data were analyzed qualitatively based on genetic decomposition. The results of this study are that students can use square, rectangular and unit square cards to determine the principle of factorization of quadratic equations. Students can generalize until completing a perfect quadratic equation. The conclusion is that the cognitive process of students who learn to use learning media based on square and rectangular able to reach a high level (trans-level).

Keywords
cognitive processes, quadratic equations, cognitive levels

Topic
Mathematics Education

Link: https://ifory.id/abstract/G4fMFLUEjAYw

Corresponding Author
Rita Susanti

Institutions
IKIPSILIWANGI

Abstract
ABSTRACT This study is a quasi-experimental study that aims to compare the mathematical communication skills between students who get the Think Talk Write (TTW) learning model and the Group Investigation (GI) Learning Model, examine their quality improvement and examine students attitudes towards Think Talk Write (TTW) learning models. ) and Group Investigation (GI) Learning Models. The population in this study were all students of class VIII 1 of Leuwigoong Junior High School, with a sample of two classes, namely: class VIII-E as the experimental first class who received the Think Talk Write (TTW) learning model and class VIII-H as the experimental second class that obtained the Model Group Investigation (GI) Learning. The instrument used was a description of mathematical communication skills and attitude scale. The results of data analysis showed that the mathematical communication skills of students who got the Think Talk Write (TTW) learning model were no better than those who received the Group Investigation (GI) Learning Model. Quality Improvement of mathematical ability of experimentalfirst class students who get the Think Talk Write (TTW) learning model with the moderate category and for the improvement of mathematical communication skills of the experimental second class students who receive the Group Invertigation (GI) learning model with the moderate category, and for student attitudes towards mathematics learning using Think Talk Write (TTW) and Invertigation learning models (GI) both interpret well.

Keywords
Mathematical communication skills, Think Talk Write (TTW) models, Group Invertigation (GI) models.

Topic
Mathematics Education

Link: https://ifory.id/abstract/b6EfxN2mgr8X

Corresponding Author
Zetriuslita Zetriuslita

Institutions
Universitas Islam Riau

Abstract
The purposive of this research was to describe and analyze correlation of student-s response in applying Problem based learning and cognitive conflict strategy (PBLCCS) to improve critical thinking (CT) and curiosity attitude (CA). This research design was quantitative and qualitative research. The population was consisted of undergraduate students of Mathematics Education Study Program FKIP Universitas Islam Riau. The instruments used in this research were observation, quationaire and interview sheets. The findings showed that :(1) response of students in increasing critical thinking (CT) and curiosity attitude (CA) in teaching and learning process through problem based learning model and cognitive conflict strategy based on academic level was positive and very good category and they helped student to solve problems given and there were correlation among them based on academic level. (2) There were correlation between of students- response in applying Problem based learning and cognitive conflict strategy (PBLCCS) to improve critical thinking (CT) and curiosity attitude (CA) based on academic level. They were known through observations, questionaire and interviews results.

Keywords
problem-based-learning. cognitive conflict strategy, critical thinking skills , curiosity attitude, academic level

Topic
Mathematics Education

Link: https://ifory.id/abstract/Mu943bNfBenG

Corresponding Author
Titin Karlina

Institutions
Institut Agama Islam Negeri (IAIN) Bengkulu, Jl. Raden Fatah Pagar Dewa, Kota Bengkulu 65144, Indonesia.

Abstract
Abstrak. This correlational study aims to determine the effect of learning interest fowards in mathematics achievement in Junior High School students PGRI Kota Bengkulu. The sampling in this study used a purposive sampling technique with consist12 student, grade VII, which is 5 boys and 7 girls. The data is collected by using a questionnaire and documentation. Then, the data is analyzed using correlation analysis. Based on the results of the analysis, it is concluded that students interest in learning has a positive effect on mathematics achievement. Keywords : Interest to Learn, Mathematics Achievement

Keywords
Interest to Learn, Mathematics Achievement

Topic
Mathematics Education

Link: https://ifory.id/abstract/ghptW34bC8AY

Corresponding Author
Azalina Nurul Fajariah

Institutions
IKIP Siliwangi (a*); (b)

Abstract
The present research aims to analyze the correlation between mathematics Self regulated learning and mathematical-logical thinking skills. The design of the research is survey correlation analysis as it is suitable to validate the relation of the two quantitative variables. To retrieve the data, 60 seventh grade students of two classrooms were sampled through cluster random sampling in SMP PGRI Pameungpeuk. The instruments employed to gather the intended data were logical-mathematical intelligence test consisting of 4 questions and self regulated learning scale consisting of 25 questions. Further, the data were analyzed in a quantitative manner modeled to logical-mathematical thinking skills data and self regulated learning scale using SPSS 20. The analysis revealed that students- mathematical Self regulated learning significantly affects students- logical-mathematical thinking skills.

Keywords
Mathematical-logical thinking skill; self regulated learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/yWa6tHE7QhML

Corresponding Author
Nur Aliyyah Irsal

Institutions
Universitas Bengkulu

Abstract
The critical thinking, that involve the reflective and evaluative process, has a significant role in students- everyday life. Therefore a teacher candidate need to has a good critical thinking to be able to foster their students thinking critically through learning mathematics. As an initial step to reinforce the critical thinking of teachers candidate, we need to know the state of their thinking. For this purpose, we conducted a descriptive study to investigate the critical thinking of mathematics education students in geometry. We designed a writen task in two types: true/false questions to investigate the critical tinking in their geometric comprehension and making decission, and problem solving questions to check their using of critical thinking in solving problems. The result we get showed the lack of mathematics education program students critical thinking in the geometry context. This conditions was due to their misconception of geometry context, their less paying attention to the whole situation and condition, and their less open analysis of situations. It implied that the geometry course need to be improved in using medias and strategies that involved more challenging problems and using more open analysis and logical thought in comprehend the concepts.

Keywords
mathematics education, critical thinking, geometry

Topic
Mathematics Education

Link: https://ifory.id/abstract/mLUH9apnce84

Corresponding Author
Edi Syahputra

Institutions
Universitas Negeri Medan

Abstract
ABSTRACT This article is a summary of some second year research reports of the three years research plan financed by Directorate of Research and Community Service (DRCS). This research aims to develop a learning model based on Attention, Relevance, Confidence and Satisfaction (ARCS) theory oriented towards Indonesian Qualification Framework (IQF) that was applied to mathematical statistics course. The stages of development of this learning model were following Plomp-s learning model development process.Plomp-s model has three stages namely: (1) preliminary stage; (2) prototype stage; (3) assessment stage. After went through experts validation process, appeal validation, and several revisions, in this second year,the implementation of this research had stepped on the beginning of assessment stage, limited trial. At this stage, technical assessment was carried out using practicality and effectiveness tests. Main focus of this stage is on field trials to find out whether the prototype model and all learning tools that have been produced are practical and effective. The field trials were conducted at three universities in North Sumatera, namely Undergraduate and Graduate School of State University of Medan, Undergraduate and Graduate Schoolof Muslim Nusantara Medan University and Graduate Schoolof Asahan University. This paper is only reporting the field trial-s result done in Undergraduate School of Mathematics Education Program in State University of Medan. In State University of Medan, the trial was held twice. First was in class A followed by 21 students and second was in class B followed by 40 students. From the results of the first and second trials obtained that all of the learning toolsconsist of student textbook, lecturer handbook, student worksheetss, and other supporting tools indicated high validity. Moreover, there is an enhancement of students-ability to understand about mathematical statistics. Highest score in the first trial significantly increased from 80.5 to 94.5 in the second trial. While lowest score also significantly increased from 40,5 to 58,0 and average score increased from 63.5 to 74.4 in the second trial. Keyword: learning model, ARCS theory, IQF

Keywords
learning model, ARCS theory, IQF

Topic
Mathematics Education

Link: https://ifory.id/abstract/XDTea2jwzVQG

Corresponding Author
andriyani andriyani

Institutions
a) Universitas Ahmad Dahlan
Jl. Pramuka No. 42 Sidikan, Yogyakarta- Indonesia
*andriyani[at]mpmat.uad.ac.id.
b) Universitas Lambung Mangkurat
Banjarmasin, Indonesia

Abstract
The aim of this research is to develop a Braille Geometry module based on visual impairment students synthetic touch skill with RMT approach that was valid dan practical using ADDIE development design. This module designed to optimize students synthetic touching skills and develop RMTs three cognitive functions i.e the cognitive function of qualitative thinking, quantitative thinking with precision, and abstract relational logic thinking. A module was validated by media experts and material experts. The practicality of the module is measured by the students response questionnaire. Data were analyzed using descriptive quantitative. The results showed the validity of geometry Braille module from experts showed valid in 86,2%. Some revisions are needed especially on the representation of quadrilateral model which need appropriating to students physiological structural abnormalities. Based on data collected from seven students who have completely filled 10 statements in the questionnaire, about 87,5% of students stated they could understand the questions very well and they agreed that module enhanced their understanding of quadrilateral betweenness relations. Thus those result indicated a high level of practicality. This research concludes this module has good validity and practicality, especially for visual impairment students geometries object understanding that has limited visualization.

Keywords
Braille, Geometry, Module, visual impairment, RMT

Topic
Mathematics Education

Link: https://ifory.id/abstract/kgJ4bqpnBGNv

Corresponding Author
Heni Pujiastuti

Institutions
Universitas Sultan Ageng Tirtayasa

Abstract
Learning media is one of the supporting components in learning process. In this development research, learning media is packaged using aspects of local wisdom and 21st century skills. The aim of this research is to develop an alternative learning media in accordance with the competencies of 21st century skills without leaving the values of local wisdom in the form of knowledge about the culture, habits and characteristics of the region, especially in Banten Province. The development model used in this research is ADDIE with 5 stages; Analysis, Design, Development, Implementation, and Evaluation. As a result, this research has successfully developed the AndroMath application. AndroMath application contains a summary of the material, examples of questions, practice questions and quiz games with social arithmetic material for seventh grade students of junior high school. AndroMath application is developed in smartphones with the Android operating system. The feasibility test on this application is carried out by six experts, consisting of three media experts and three material experts and students. The percentage score from all expert were 92.48% for media assessment, 89.02% for content assessment and 80.76% from student responses. The result show that the AndroMath application is worthy to use for student in the learning process.

Keywords
Interactive Learning Media, 21st Century Skills, Local Wisdom, AndroMath

Topic
Mathematics Education

Link: https://ifory.id/abstract/ACHbhgMzJTXy

Corresponding Author
Zulfah Zulfah

Institutions
a) Mathematics Education, Universitas Pahlawan Tuanku Tambusai, Jalan Tuanku Tambusai No 23, Bangkinang, Riau, 28412, Indonesia
* zulfahasni670[at]gmail.com

b), c), d) Mathematics Education, Universitas Pahlawan Tuanku Tambusai, Jalan Tuanku Tambusai No 23, Bangkinang, Riau, 28412, Indonesia

e) Mathematics Education, IKIP Siliwangi, Jl. Jendral Sudirman, Cimahi 40526

Abstract
The study aims to produce Open-Ended based mathematics problems that can be used to measure the high-level thinking abilities of seventh-grade junior high schools- students. The study is developmental research using the Plomp model, consisting of the preliminary, the prototyping, and the assessment phase. The subject was seventh-grade SMP in Bangkinang. The teaching material used was about numbers learned at seventh-grade junior high school. Based on the results of the development, it was obtained 15 open-ended based problems in which 12 of them possibly have various answers, and 3 have various possibilities ways of answering. The problems developed are valid with the criteria of the developed problem based on content, the problems have diverse answers or various ways to answer, problems can measure high-level thinking skills; analyzing, evaluating, and creating, and the content of the material is fit to the material about numbers. The problems use clear construct images, clear instructions for working on, adapted EYD language, and appropriate sentences to seventh-grade knowledge level, disuse of misinterpreted expressions as well. Related to practicality, it is obtained that students and teachers can use the problem and do it well. The teacher can use it to evaluate students high-order thinking skills

Keywords
Open-Ended Questions for Mathematics, Higher Order Thinking Skills

Topic
Mathematics Education

Link: https://ifory.id/abstract/3PeK84burVL6

Corresponding Author
Zulfah Zulfah

Institutions
Mathematics Education, Universitas Pahlawan Tuanku Tambusai, Jalan Tuanku Tambusai No 23, Bangkinang, 28412, Riau, Indonesia, zulfahasni670[at]gmail.com

Abstract
The purpose of this study is to produce the valid, practical, and effective problem-based questions to measure the mathematical problem-solving abilities of eighth-grade students of junior high school. The materials used as the basis of development are system of linear equation in two variables and the Pythagorean theorem. The development model used is the Plomp model consisting of three stages; preliminary research, prototyping phase, and Assessment phase. Based on the results of these stages, 16 problem-based questions were obtained which are valid to the criteria of content, constructs and determined language, practically used by the teacher, and effective for measuring students mathematical problem solving abilities because they can direct students to identify problems, plan solutions, implement solutions, and need to carry out evaluations as indicators of problem-solving abilities.

Keywords
Math Questions, Evaluation, Mathematical Problem Solving Skills

Topic
Mathematics Education

Link: https://ifory.id/abstract/JYxqRCXApa8T

Corresponding Author
Muhammad Zaki

Institutions
Universitas Samudra

Abstract
Based on the results of the preliminary study in junior high school, it was found that there was no development of a test that developed students high-order thinking skills (HOTS). This study aims to develop HOTS-based test questions proposed by Bloom revision which includes C4 (analyzing), C5 (evaluating) and C6 (creating). This study aims to produce HOTS math tests on exponents that are valid and practical. This research is development research (R & D) with a development model based on Tessmer which consists of two stages, namely the preliminary and stage formative evaluations. The trial of the question was held in class IX of SMP Negeri 5 Langsa. The instruments of data collection include question grids, question sheets, validation sheets, and questionnaire sheets. The results of the development of HOTS questions are a set of questions consisting of grids and HOTS questions with 10 questions in the form of descriptions that valid and practical criteria. The set of questions is declared valid with an average score criterion of 85% in a very valid category and declared practical with a score criterion of 80% in a very practical category. The HOTS problem developed also had a good potential effect on students high-level thinking abilities with an average score of 64,2 which showed students high-level thinking skills in good categories.

Keywords
high order thinking skills, Exponent

Topic
Mathematics Education

Link: https://ifory.id/abstract/QWLRw2Pjqtzk

Corresponding Author
Retno Dwi Putri

Institutions
Departemen Pendidikan Matematika, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*retnoputri[at]upi.edu

Abstract
This study is aimed to develop student worksheet based on education for sustainable development on function derivative material for the eleventh of senior high school. This reseach is a design research using the Plomp model comprising preliminary, prototyping, and assessment research. The product of this study is a set of student worksheet based on Education for sustainable development on function derivative material. The student worksheet was validated by expert lecturer and teacher. After validation by expert, the students worksheet are given to students to find out students responses. The result of validation and try out indicate that the worksheet was very valid and got a good response.

Keywords
Student worksheet; Education for Sustainable Development; Function Derivative material

Topic
Mathematics Education

Link: https://ifory.id/abstract/9Cp3awRGhVbU

Corresponding Author
Nurul Anriani

Institutions
Magister Pendidikan Matematika Pascasarjana Universitas Sultan Ageng Tirtayasa

Abstract
The purpose of this study was to produce Teaching Materials for secondary teachers based on 21st century skills aspecially for circle topic and to know the quality of teaching materials based on validity and practicability. This research is a development research that includes seven main steps, namely: needs analysis, the ability of researchers as developers, product design, product concepts, development, expert testing, and field trials. The feasibility of developing a teaching materials was obtained based on data from the questionnaire which was then analyzed descriptively quantitatively. The conclusion of this research is the teaching material for secondary teacher aspesially for circle topic based on 21st century skill fulfilling the minimum criteria and expressed very well from the validity aspects and in terms of practical aspects stated practical. Thus, the teaching materials for mathematics teachers based on 21st century skill can be used as a teachers guide on the learning process.

Keywords
Teaching Materials, 21st Century Skills

Topic
Mathematics Education

Link: https://ifory.id/abstract/v42nKAjUZWgz

Corresponding Author
Agus Susanta

Institutions
FKIP, Universitas Bengkulu

Abstract
The purpose of this study was to develop mathematics test instruments for secondary school students that valid, reliable, a good discriminationtion, and a good level of difficulty. This research was a research and development using the stages of instrument development, namely: (1) compiling test instrument specifications, (2) writing test instruments, (3) examining test instruments, (4) conducting test, (5) analyzing items, (6 ) fixing the test. The instruments used in this study consisted of expert validation sheets and student response sheets. The subject in this study was thirty secondary students of the Mathematics Education Study Program, Faculty of Education, University of Bengkulu on mathematical learning evaluation course. The results of the research showed that in developing of the instruments obtained were 160 items of multiple choice test for seventh and eight grade. The results of the analysis showed that all test instruments were reliable with a high category, good discrimination, and easy to medium difficulty level. The results of student responses in preparing test instruments showed high criteria with an average score of 49.70

Keywords
development, mathematics test instruments

Topic
Mathematics Education

Link: https://ifory.id/abstract/HYnEjuvCdf7F

Corresponding Author
Aflich Yusnita Fitrianna

Institutions
a) Faculty of Mathematics and Science Education, IKIP Siliwangi
Jalan Terusan Jenderal Sudirman, Cimahi Indonesia
*aflich2017[at]gmail.com
b) Faculty of Mathematics and Science Education, IKIP Siliwangi

Abstract
The purpose of this study to develop the didactical design of Calculus subject teaching materials with Problem Based Learning. The research method used in this study was didactical design research. The research steps taken are didactic situation analysis, to see the student learning obstacle that appears in calculus courses. The subjects taken were students who had received Calculus I courses, namely 5 people in class 2015, 5 people in 2016, and 5 people in 2017. The results of the didactic situation analysis were difficulties in understanding students in the initial calculus material, so the special emphasis was placed on - Initial calculus material with problem-based learning.Based on the results of the learning obstacle, a problem-based calculus teaching material was developed and validated. Metapedidaktik analysis, at this stage a limited trial was conducted on students who were taking calculus courses in class 2018. Retrospective analysis revised teaching materials and linked the learning obstacle with student responses and observations during learning. The results of this study are learning tools used in calculus learning with problem-based learning. The didactic design developed received positive responses from students.

Keywords
Didicatical Design, Learning Obstacle, Calculus

Topic
Mathematics Education

Link: https://ifory.id/abstract/9ukEKtpTJ6Zm