Indonesia Conference Directory

Corresponding Author
Nurma Lestari

Institutions
a) Master of Mathematics Education, Sriwijaya University, Komplek Unsri, Jl. Srijaya Negara, Bukit Lama, Kec. Ilir Bar. I, Palembang 30137, Indonesia

ratu.ilma[at]yahoo.com

b) Master of Mathematics Education, Sriwijaya University, Komplek Unsri, Jl. Srijaya Negara, Bukit Lama, Kec. Ilir Bar. I, Palembang 30137, Indonesia

Abstract
This research aims to generate the mathematical problems of the PISA model using the context of Palembang with the help of video which valid and practical and has a potential effect on the ability of student-s mathematics literacy. The context used are ampera bridge and light rail transit. Their content are shape and space; and uncertainty and data. The research subjects were 10th class in senior high school students. The methodology used is the design research of type development studies, with 2 stages namely, preliminary and formative evaluation. At the preliminary stage, curriculum analysis, PISA framework, research subject and instrument making problem. Formative evaluation stages include self-evaluation, expert reviews and one-to-one, small group, and field test. The data collection techniques used are documentation, walk through, tests, observations, and interviews. This research has resulted in the mathematical problems of the PISA model using the context of Palembang with the help of video which valid and practical, and has a potential effect. Valid as seen from the validator assessment results based on content, construction, and language as well as student-s work in one-to-one phases. Practically seen from the students answers at the small group stage where students can understand the intent of the question. The potential effect is obtained from the students answers at the test field. Based on the analysis of student answers, the mathematical literacy skills that emerge are 72,72% communication skill; 93,93% mathematical skill; 96,97% representation skill; 72,72%reasoning and argument skill; 96,97% choose strategies to solve problems skill; 69,69% using symbolic, formal, and technical languages skill; and 100% use mathematical tools skill.

Keywords
PISA, Palembang, , Mathematical Literacy

Topic
Mathematics Education

Link: https://ifory.id/abstract/jbkRFrxzPtD6

Corresponding Author
Gida Kadarisma

Institutions
a)Department of Mathematics Education , IKIP Siliwangi
jalan terusan jendral sudirman Cimahi 40526, Indonesia
*gidakadarisma[at]ikipsiliwangi.ac.id

Abstract
Content Knowledge and pedagogical knowledge are two most important aspects of teaching. Therefore this research is motivated by the importance of pedagogical content knowledge for pre-service teacher students. The purpose of this study is to analyze PCK that is owned by pre-service teachers when teaching quadrilateral material. The method of this study is a qualitative carried out to obtain in-depth picture of the pre-service teachers PCK in the process of learning activities. The sample of this study is taken by 3 students of mathematics teacher candidates in IKIP SIliwangi conducting field practice in a junior high School in Cimahi. The instruments of this study are in the form of questionnaires and observation sheets to analyze PCK of teacher candidates, pre-learning questionnaires are used to analyze pre-service teachers in making learning plans as many as 6 indicators, and questionnaires in-learning are used to analyze PCK of teacher candidates in delivering material, mastering concepts and choosing methods in line with 20 Indicators. Based on the data analysis, it was found that the PCK of pre-service teacher students in the quadrilateral material belonged to the classification good enough in developing strategies, making lesson plans, in the learning process and mastery of concepts.

Keywords
pedagogical content knowledge, Preservice Mathematics Teachers

Topic
Mathematics Education

Link: https://ifory.id/abstract/nrENcLmG6q3T

Corresponding Author
Yeni Widiastuti

Institutions
a) Master of Mathematics Education, Sriwijaya University,
Jalan Srijaya Negara, Bukit Besar, Ilir Barat I, Bukit Lama, Kota Palembang, 30128, Indonesia

ratu.ilma[at]yahoo.com
b) Master of Mathematics Education, Sriwijaya University,
Jalan Srijaya Negara, Bukit Besar, Ilir Barat I, Bukit Lama, Kota Palembang, 30128, Indonesia

Abstract
This study aims to develop a set of valid and practical of PISA-like mathematics using transportation context, and to know the potential effects of the developed PISA-like mathematics problems to the ability of the tenth-grade students- mathematical literacy. The PISA-like mathematics problem developed using Design Research type development studies. There are two stages procedure of this study, preliminary stage and formative evaluation stage. The subject of this study were 10th-grade students of Srijaya Negara Senior High School. The data collection techniques used were walkthrough, interview, test and documentation. Based on the result of this study, it can be concluded that there are a set of valid and practical PISA-like mathematics problems using transportation context, and the potential effects be obtained from the result of students- answer at field test stage. Based on the analysis, there are 3 of 34 students use communication; mathematization; representation, devining strategies to solve problems; using symbolic, formal, and technical languages, 28 of 34 students, using communication ability only, and 2 of 34 students can-t use any ability when solving the problem.

Keywords
PISA-like Mathematics Problems, Change and Relationships, Transportation

Topic
Mathematics Education

Link: https://ifory.id/abstract/ABN8JV6kb9Tf

Corresponding Author
osi mitari

Institutions
Sriwijaya University

Abstract
Challenges for developing countries must certainly have students with high mathematical literacy abilities. The fact was Indonesian students in PISA math rankings are still not good, it because the low mathematical literacy abilities of students. This article aimed to know the potential effects of PISA mathematics problems on students mathematical literacy abilities. The method in this study used a design research type of development study with the preliminary and formative evaluation stages. The evaluation flow at the prototyping stage was a formative study including the self-evaluation stage, expert review and one-to-one, small group, and field test. In this article, the discussion of the study was about the results of students- answers in the field test stage, questions that have potential effects that give rise to mathematical literacy abilities namely communication ability, mathematical ability, representation ability, reasoning and argument ability, choose strategies to problem solving ability, and use language and symbolic, formal and technical operation ability. With the dominant ability was communication ability.

Keywords
Design Research, Mathematical Literacy, PISA, PMRI

Topic
Mathematics Education

Link: https://ifory.id/abstract/8bB7qu9XCdcH

Corresponding Author
Kiki Nia Sania Effendi

Institutions
a) Prodi Pendidikan Matematika Universitas Singaperbangsa Karawang
b) Prodi Pendidikan Matematika Universitas Sriwijaya Palembang
c) Prodi Pendidikan Matematika Universitas Pasundan Bandung

Abstract
This article discusses the results of the development research in the field test phase of reading text for School Literacy Movement in mathematics learning. This research is a development research with design research method using development studies type. The evaluation flow at the prototyping stage uses the formative study flow with the self-evaluation, expert review, one-to-one, small group, and field test stages. The research subject was 7th grade students at a junior high school in Karawang. The data was collected by documentation, questionnaires, tests and interviews. The results of the calculation of size effects indicate an effect of 2,895 with high interpretation. Conclusions obtained from the results of product data analysis in the form of reading text for School Literacy Movements in the learning phase that have potential effect for students in mathematics learning.

Keywords
School Literacy Movements; futsal; mathematics learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/8HgKmr2nuDAC

Corresponding Author
Yuli FITRIANTI

Institutions
a) Department of Mathematics Education Raden Fatah State Islamic University of Palembang, Indonesia
*yulifitrianti_uin[at]radenfatah.ac.id
b) Department of Mathematics Education, Universitas Pendidikan Indonesia
c) Department of Mathematics Education, Universitas Pendidikan Indonesia

Abstract
Divisibility concept is fundamental to the development of another concept in elementary number theory. A study of the construction of the divisibility advanced mathematics teacher was done to provide empirical evidence of early genetic decomposition design. Through the question, we designed in the form of test sheets and interview, we explorer the construction of 3 students. The result of this qualitative study illustrated that construction of the divisibility concept on the problem solving of number theory represented in algebra.

Keywords
Divisibility Concept, construction, APOS Theory

Topic
Mathematics Education

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

Corresponding Author
Tri Nopriana

Institutions
(a,b) Pendidikan Matematika, Universitas Swadaya Gunung Djati, Jl. Perjuangan No. 01, Cirebon 45131, Indonesia

*trinopriana[at]unswagati.ac.id

Abstract
Good candidates for mathematics teachers are those who have good thinking skills especially in mathematics, good habits of mind and the ability to survive under pressure. Those skills are reflected in the level of geometric thinking, the level of logical thinking, the scale of habits of mind and resilience in mathematics. The purposes of this study were to analyze the achievement of the level of geometric thinking, the level of logical thinking of pre-service mathematics teachers, describe the habits of mind and student resilience in mathematics. The research subjects consisted of 30 mathematics education students at FKIP Swadaya Gunung Djati University (UGJ) as pre-service mathematics teachers who would practice by teaching in schools. The instruments in this study were: (1) van Hieles geometrical thinking test developed by The Cognitive Development and Achievement in the Secondary School Geometry Project (CDASSG), (2) the logical thinking test (TOLT) designed by Tobin and Capie, (3) The Habits of Minds Scale, and (4) Mathematical Resilience Scale with 4 categories of Likert models. The results of the study were that pre-service mathematics teachers achieved: (1) the level of van Hieles geometrical thinking at the stage of informal deduction, (2) the level of logical thinking at the formal thinking stage, meaning pre-service mathematics teachers were able to solve problems related to proportional reasoning, variable reasoning, correlational reasoning, and combinatorial reasoning. Furthermore, on the soft skills, pre-service mathematics teachers have (3) habits of mind in the good category with an average achievement of 74.5%, this is also seen in achievement (4) the resilience in mathematics who have a good category with an average achievement of 73.6%. Based on the results of the study, it can be concluded that overall the pre-service mathematics teachers in FKIP UGJ have good abilities in geometrical and logical thinking, the habits of mind and resilience in facing mathematical problems.

Keywords
van hiele gemetric thinking, logical thinking, habits of mind, resilience in mathematics.

Topic
Mathematics Education

Link: https://ifory.id/abstract/zNZuARqF8xeD

Corresponding Author
Bety Miliyawati

Institutions
Universitas Subang

Abstract
This article presents the results of research on how to construct a Problem Based Learning (PBL) model with Didactical Engineering (DE) to enhance students mathematical critical thinking (MCT) ability. This study uses quasi-experimental methods of pretest-posttest. The sample involved 158 eighth grade students from two junior high schools at the high and medium levels in Subang City. The sample for the experimental group and control group was randomly selected on the basis of grades. Instruments used were tests of prior mathematical ability (PMA), MCT ability test, and mathematical disposition. Research data of students- pretest, posttest, and normalized gain scores for MCT. The results showed that there is a significant difference in the enhancement of students- MCT between the experimental and control groups. The enhancement of MCT of the experimental group students who were taught with the PBL model with DE is significantly greater in each category of their PMA both in the schools of the high and medium levels compared to the enhancement of the students who were taught with conventional learning model. In addition, there is no interaction effect between the learning model and the students PMA on the mathematical disposition.

Keywords
PBL model, didactical engineering, mathematical critical thinking ability, mathematical disposition

Topic
Mathematics Education

Link: https://ifory.id/abstract/XWb8YKxj62BC

Corresponding Author
afifah latip rayid jauhari

Institutions
UPI

Abstract
Important representation in learning mathematics that is important for students. The purpose of this study is to classify the ability of mathematical representation as the basis for determining approval in future studies. The representation of capabilities studied in this study is verbal representation, representation of images and symbols of representation in introductory social studies subjects. This study involved 3 students in the third semester communication class. The instrument used consisted of a test of mathematical representation ability in introductory subjects in social statistics. Data analysis was carried out by analyzing the results of student answers and then connecting to high and low groups, then analyzed in full on the profile of students mathematical representation abilities. The results of data analysis show that most students are included in the criteria for the ability of moderate mathematical representation. The results of this study have implications for the need to develop appropriate learning models so that participation increases

Keywords
Higher Education; Representation; Statistics

Topic
Mathematics Education

Link: https://ifory.id/abstract/2jTZbCu8GhtE

Corresponding Author
Dian Cahyawati

Institutions
a) Mathematics Study Program, Sriwijaya University, Palembang
Jl. Palembang-Prabumulih km. 32 Indralaya Kab. Ogan Ilir
* dianc_mipa[at]unsri.ac.id
b) Mathematics Study Program, School of Postgraduate, Indonesia Education University, Bandung
Jl. Dr. Setiabudi No. 229 Bandung

Abstract
This article presents a profile of students statistical reasoning ability on the topic of inference statistics based on their academic characters. Data was collected from active students of pre-service mathematics students in the even semester of 2018/2019 that consisted of two learning classes. Based on the similarity of the statistics pretest result, one class was determined randomly as the experimental group and the other class as the control group. Statistical reasoning ability (SRA) and prior knowledge of statistics (PKS) were measured by test instruments. Student characters data were collected through a closed questionnaire. Each students academic character was explained by the association with nine PKS indicators. Based on the age, students were aged from 19 - 21 year and consisted of 29% of male and 71% of female. The PKS profile based on gender showed that female students tend to have higher SRA achievement for each indicator than male students. Students in the experimental group with more frequent learning intensity and longer learning periods tended to show better achievement of PKS compared to students in the control group. Students with low and high PKS levels indicated that the students- SRA achievement in the experimental group tended to be better than students- SRA achievement in the control group while the moderate level was not.

Keywords
Prior Knowledge, Statistical Reasoning, Students Achievement

Topic
Mathematics Education

Link: https://ifory.id/abstract/BQp9DrnREWjU

Corresponding Author
ASEP AMAM

Institutions
a) Department of Mathematics Education, Universitas Galuh Ciamis , Jl. RE Martadinata No. 150, Kabupaten Ciamis 46274, Indonesia.
*asepamam85[at]gmail.com

b) Department of Mathematics Education, Universitas Swadaya Gunung Djati, Jl. Perjuangan No. 1, Kota Cirebon, Indonesia.

Abstract
The purpose of this study was to analyze the increase and achievement of students mathematical reasoning abilities after the implementation of project-based learning with GeoGebra-assisted. The research used pre-post control design. The number of samples is 78 students at the junior secondary level with purposive sampling. The method used in this study is by dividing students into two groups, namely the experimental class (project-based learning with geogebra) while the other is a control class (without Geogebra). The results of the study show that there are differences in achievement and increase students mathematical reasoning skills among students between two group. So it can be concluded that project-based learning with geogebra is more effective than conventional learning.

Keywords
mathematical reasoning, GeoGebra, Project-based learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/kmDZ2V3wjfgA

Corresponding Author
Sri Rahayu Setiyorini

Institutions
Pendidikan Matematika, Institut Keguruan dan Ilmu Pendidikan Siliwangi, Jl. Terusan Jenderal Sudirman, Cimahi 40526, Indonesia
*sr.setiyorini[at]gmail.com

Abstract
Low mathematical representation skill causes the inability of vocational students solving problems creatively as demanded by industries. Previous researches showed that blended problem-based learning (BL-PBL), which combines online and offline learning to train students to independently solve problems, was proven to increase mathematical skills in several education levels. Therefore, this research is aimed to evaluate BL-PBL effect to mathematical representation skill escalation in vocational high school. Quantitative study with pre-test and post-test control group design was performed to two randomly-chosen classes over vocational schools in Kabupaten Bandung Barat, West Java, Indonesia. Samples were divided into two groups: experimental (BL-PBL method) and control (lecture method). Initial skill was determined by pre-test while learning outcome was determined using post-test. Data was analyzed by t-test and two-way ANOVA with 0.05 significance level using IBM SPSS. Result showed the initial skill of two groups was similar. After treatment, N-gain data uncovered a significant increase of representative skill in experimental group. While, two-way ANOVA test showed no interaction between learning model used and student grouping based on initial skill to representation skill. Finally, BL-PBL was proven to increase mathematical representation skill in vocational students and, hence, is suggested to be implemented in vocational high school.

Keywords
Blended Learning, Problem-Based Learning, Mathematical Representation Skill, Vocational High School

Topic
Mathematics Education

Link: https://ifory.id/abstract/wpha2ex63mdK

Corresponding Author
Hestu Wilujeng

Institutions
1Math Education Department, University of Pendidikan Indonesia.
Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2Institut Agama Islam Negeri Ponorogo
Jl. Pramuka 156 Ponorogo 63471, Indonesia

Abstract
The self determination theory is the ability that allows an individual to choose and have several choices to determine an action. The problems experienced by the students related to SDT are the decreasing motivation of students to develop themselves, students are unable to be responsible and not sensitive to the feelings of others. The purpose of this study was to examine the differences in SDT achievement of MPK student self determination theory (high, medium and low). This research method was quasi experiment with Post-test Only Control Design. Subjects in the study were 124 students. The learning process was carried out through Merrills First Principles of Instruction and ordinary learning. The results shows that the average achievement of high, medium and low MPK on the self determination skill theory of students who received MFPI learning are better than those who received regular learning. In SDT indicator, autonomy and students relatedness who have high MPK are superior in comparison to medium and low MPK. The low MPK category is better on competence indicators compared to high MPK and medium MPK. MFPI learning should be an alternative learning for teachers in mathematics because in addition to improving student cognitive abilities.

Keywords
self determination, MFPI

Topic
Mathematics Education

Link: https://ifory.id/abstract/Bjfm8XzNEPU9

Corresponding Author
Ramdhan Fazrianto Suwarman

Institutions
Suryakancana University
ramdhan[at]unsur.ac.id

Abstract
Real options are one of the most fascinating research topics in Finance today, since 1977 Stewart C. Myers from the MIT Sloan School of Management published his pioneering article on this subject in the Journal of Financial Economics. Real options are techniques for support capital budgeting decisions which adapting the techniques developed for financial security options. The purpose of using this real option is to capture options contained in projects that cannot be captured by discounted cash flow models that operate as a basic framework for almost all financial analyzes. The real option valuation process will be complemented by interest rate stochastic modeling and volatility stochastic modeling to further capture flexibility and volatility from the existing economic and financial situation. The valuation will be using Monte Carlo simulation with Matlab programming language on crude oil data from the North Sea oil field. The data is obtained from Charlie Grafström and Leo Lundquists thesis with the title "Real Options Valuation vs. DCF Evaluation - An application to a North Sea oilfield ".

Keywords
Real Options, Stochastic Interest Rate, Stochastic Volatility, Monte Carlo Simulations

Topic
Applied Mathematics

Link: https://ifory.id/abstract/HexbMh4qjXwT

Corresponding Author
Ginta Octizasari

Institutions
(a*) Yayasan Pondok Pesantren Makrifatul Ilmi, Jalan Gunung Ayu, Manna, Bengkulu Selatan; (b)Postgraduate Mathematics Education, University of Bengkulu WR.Supratman road, 38371A Bengkulu, Indonesia

(a*) linierginta[at]gmail.com; (b) salehhaji[at]unib.ac.id

Abstract
This study aims to determine the realistic mathematical approach based on the South Bengkulu society ethnomatematics in improving the character of hard work. This research is an experimental study with data collection techniques through questionnaires and observation sheets. The subjects in this study were the eighth grade students of South Bengkulu State Second Middle School and South Bengkulu MTs Makrifatul Ilmi. The results of this study are (1) There is the influence of a realistic mathematical approach based on the South Bengkulu community ethnomatematics on the character of students hard work. The results of the Ancova test show that the p-value of each class is less than where each is 0,000 and 0,012. (2) Achieving the character of students hard work with a realistic mathematical approach based on the ethnomatatics of South Bengkulu society better than Conventional Learning.

Keywords
Realistic Mathematic Education, RME, Ethnomatematics, Character, and Hard Work

Topic
Mathematics Education

Link: https://ifory.id/abstract/m4D9zhHeLwXZ

Corresponding Author
ayu aristika

Institutions
1 Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2 Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
3 UIN Sunan Gunung Djati, Jl. A. H. Nasution No. 105, Bandung 40614, Indonesia

Abstract
Abstract. Advanced mathematical thinking ability is one of the abilities students must possess. Mathematics is a universal science that underlies the development of modern technology, which has an important role in various scientific disciplines and advances the power of human thought in underlying technological developments. To improve the ability of Advanced Mathematical Thinking students need to apply a learning model, one of them is learning Reciprocal Teaching. Reciprocal Teaching learning can improve the mindset and enthusiasm of students in learning so students actively discuss and explain the results of their work properly thus the ability of Advanced Mathematical Thinking in students can be seen and can be improved.

Keywords
Advanced Mathematical Thinking, Reciprocal Teaching

Topic
Mathematics Education

Link: https://ifory.id/abstract/Eru7tkzGQ69T

Corresponding Author
Dewi Ratnasari

Institutions
IKIP SILIWANGI

Abstract
Based on the results of previous observations in SMAN 13 Garut, the daily math test results on functional derivative material are still under the KKM.The method used was the classroom action research method.The Procedure was formed in a cycle with taking research as much as three cycles, each cycle had two meetings in learning activities.Data collection techniques were through observation, mathematical comprehension tests, and documentation. The subject of this study were students of class XI MIPA 3, a total of 32 students.The success indicator in this study is if there are 85% or more students in the class get an average value of 75 and the students average activity is 75% or more than the students that have a good category. Based on the results of the study,the activities of students in cycle I was obtained in sufficient categories, the second cycle was in a good category, and in the third cycle in the excellent category.While the results obtained before the prasiklus average value is 61.2 with a 46,7% completeness level. In the first cycle,the average value was 65.5 (56.25%).Cycle II the average value was 73.0 (71.88%).And in the third cycle, the average value is 79.5 (87.50%).

Keywords
resiprocal teaching, concept understanding

Topic
Mathematics Education

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

Corresponding Author
Ulum Fatmahanik

Institutions
Ponorogo State Islamic Institute

Abstract
Students thinking ability is one of the keys to achieving skills and learning objectives in mathematics. One of the thinking skills that supports these skills is reflective thinking. Reflective thinking is active thinking, continuous, persistent, and carefully considering everything that is believed to be true by reason that supports it and leads to a conclusion. To find out how the reflective thinking skills of students need to be an activity that is solving mathematical problems, where in the process not only involves reflective thinking processes but also requires hard work and toughness (adversity quotient) to overcome difficulties in solving mathematical problems. This research is a qualitative descriptive study that aims to describe how the ability of reflective thinking of camper category students in solving problems of two-dimentional figure. The results showed that the reflective thinking ability of the camper category students was at the reflective level because in the process of thinking it was able to go through the phase of reacting, comparing and contemplating.

Keywords
Reflective Thinking, Problem Solving, Adversity Quotient, Camper

Topic
Mathematics Education

Link: https://ifory.id/abstract/4UkDVnh6QEgj

Corresponding Author
Yatha Yuni

Institutions
STKIP Kusuma Negara
Jakarta Indonesia

Abstract
Abstract. This study aims to examine the differences in students- mathematical intuition abilities. Gender was utilized to see the difference through Open-ended Inquiry-Based Learning. The design of this study was a Pretest-Post-test Control Group Experiment. The subject of this study was 156 seventh graders of two Islamic State Junior High Schools in Bekasi, comprising of 77 male and 79 female students. The instrument in this study used 5-item essay with 4 indicators of intuition (globality, self-evidence, power of synthesis, immediate). SPSS was used to analyze the data. The result of this study showed p-value > α (0,174 > 0,05). That means there was no difference in mathematical intuition ability between male and female students.

Keywords
Mathematical Intuition, Gender, Open-Ended Based-Inquiry Learning

Topic
Mathematics Education

Link: https://ifory.id/abstract/bNBud6wRa3AH

Corresponding Author
Yudi Soeharyadi

Institutions
Institut Teknologi Bandung

Abstract
Moore-s Method is a form of inquiry-based learning. R.L. Moore is a legendary figure behind this method, who started this method in an extreme way at the Mathematics Department, University of Texas in 1920-s. Despite the controversies it instilled, the method, or some milder versions of the method remain popular as a constructivist way to learn deep mathematics through inquiry-based learning. We report an implementation of Moore-s Method to a small group of students in learning new topics for their theses in two semester terms. The topic of the discussions was Spectral Properties of Quantum Graphs. By the nature of the method we tried to limit the use of textbooks or research articles for reference; almost everything that was needed for construction was produced independently within the discussions. Due to various background level they had already possessed in the beginning, the group started rather slowly. As they started to grasp better on the subject, the discussion pick up some pace, and the role of instructor started to diminish, to a mere facilitator. At the end of the second semester the group had gained significant confidence, proved a few results in some uncharted or less charted territory of Quantum Graph. The trial implementation of Moore-s method was deemed a success, as we gain some insight into the mechanics of the method: applicability and limitation, group size, topics covered, group interaction, assessment and indicators of success. References: 1. P. Blessinger, J.M. Carfora (eds.), Inquiry-Based Learning for Science Technology, Engineering and Math (STEM) Programs: A Conceptual and Practical Resource for Educators, Emerald 2015 2. C.A. Coppin et al, The Moore Method: A Pathway to Learner-Centered Instruction, MAA 2009 3. S.G. Krantz, How to Teach Mathematics, 2nd ed., AMS 1999

Keywords
Moore-s Method, inquiry-based learning, quantum graphs

Topic
Mathematics Education

Link: https://ifory.id/abstract/nCgpuAdyzmc8

Corresponding Author
Fitria Sulistyowati

Institutions
Pendidikan Matematika, Universitas Sarjanawiyata Tamansiswa Yogyakarta

Pendidikan Matematika, Universitas Muhammadiyah Purworejo

*fitria.sulistyowati[at]ustjogja.ac.id

Abstract
Abstract. This research is a descriptive-analytical study that aims to describe how student solve high order thinking (HOT) problem. The research subject was a student who was chosen based on HOT problem-solving in a non-routine way and took a mathematics course at Science Education of Universitas Sarjanawiyata Tamansiswa Yogyakarta DS Setiana1. Data were collected using observation, documentation and interviews methods, then will be analyzed descriptively. Based on the analysis that has been done, it was found that: (1) the strategy used by the student to solve the HOT problem was obtained from the internet; (2) there are errors when student applied the strategy that has been obtained in solving the HOT problem; (3) the student have difficulties when solving HOT problem in the same way. The results of this analysis are expected to provide a little description for educational activists related to the solving of HOT problem by students.

Keywords
HOT problem, trigonometry

Topic
Mathematics Education

Link: https://ifory.id/abstract/mNDbQrFB74T9

Corresponding Author
Betty Kusumaningrum

Institutions
a) Universitas Sarjanawiyata Tamansiswa
Jl Batikan, Tahunan, Umbulharjo, Yogyakarta, Indonesia
*betty.kusumaningrum[at]ustjogja.ac.id

Abstract
Visualization ability (spatial ability) is needed in understanding integral calculus. This article discusses changes in the spatial ability of a student in drawing graphs of functions to determine the volume of the solid of revolution after obtaining treatment. The treatment is in the form of questions that encourage the subject to be able to draw the graph correctly. This research is a qualitative descriptive study with a single subject. The subject in this study was 6th semester student of mathematics education study program at one of the private universities in Yogyakarta. The selection of a subject from 44 students was done by giving a question about the volume of the solid of revolution. The subject is asked to drawing the volume of the solid of revolution graphic and determine its volume using integral. The selection of subjects by purposive random sampling based on the uniqueness of the answers to the problems given and good communication skills. This study aims to describe changes in the spatial ability of subject in drawing the volume of the solid of revolution graphic after getting treatment. Before getting treatment, a subject is still not right in drawing volume of the solid of revolution graphic. After getting treatment, there is a gradual change in spatial ability. The results of the study show that giving treatment can help increase a student-s spatial ability gradually.

Keywords
treatment; solid of revolution; spatial ability

Topic
Mathematics Education

Link: https://ifory.id/abstract/F9grNwxfXVUe

Corresponding Author
Intan Sari Rufiana

Institutions
Mathematics Education, Universitas Negeri Malang, East Java, Indonesia
intan.sari.1603119[at]students.um.ac.id

Abstract
Statistical reasoning is a major requirement in the era of big data. Therefore, there is a need to conduct a research about this statistical reasoning. One important study in statistical reasoning is the levels of statistical reasoning. The levels of statistical reasoning are based on the construction of a conceptual framework. This research aimed to describe seven levels of students- statistical reasoning in predicting data. The subjects of this research were 40 students of second semester taken from two different classes. This was conducted in order to fulfill all levels of reasoning. At first, the subjects were given a test, and then 7 students were selected to be interviewed related to the levels of statistical reasoning respectively. Data triangulation was done to maintain the validity and reliability of the data generated. There are seven levels of statistical reasoning in predicting data, namely, the levels of pre-idiosyncratic, idiosyncratic, verbal, transitional 1, procedural, transitional 2, and integrated processes. These seven levels can be used as a consideration in compiling assessment rubrics in statistical material. The assessment should not only focus on students skill in calculating and ability in problem solving but also emphasize on the aspect of reasoning.

Keywords
statistical reasoning, prediction tasks, descriptive statistics

Topic
Mathematics Education

Link: https://ifory.id/abstract/wEhKxXN4LzMQ

Corresponding Author
Fitri Alyani

Institutions
a) Mathematics Education Department, Universitas Muhammadiyah Prof. Dr. Hamka (UHAMKA)
b) Mathematics Education Department, Universitas Muhammadiyah Prof. Dr. Hamka (UHAMKA)

Abstract
The research was conducted at University Muhammadiyah of Prof. Dr. Hamka, Jakarta which involved three years academic level students (2012, 2014, 2015) at mathematics education department that have taken seven compulsory subjects. The students- performance consisted of mid test, final test and GPA meanwhile, the factors which influenced the students- achievement were gender and education background. This research study, there were seven variables which consisted of independent and dependent variables. Structural Equation Modelling was conducted to analyze the final model in predicting influenced factors of GPA. This research study used SmartPLS software to analyze contribution of each variables to the final outcome and dependent variable. The results of the study provide that gender was significantly influence their performance on their GPA. Education background were not directly influence their achievement in GPA but through mid test. The result study showed that final test was influenced by mid test score.

Keywords
Structural Equation Modelling; SmartPLS; Gender; Education Backgorund; Student Performance

Topic
Mathematics Education

Link: https://ifory.id/abstract/MpT4Dc3njLVh

Corresponding Author
Noer Hidayah

Institutions
Institut Agama Islam Negeri (IAIN) Kediri

Abstract
The purpose of this research is to understand about student-s cognitive process in the solving test based on HOTS in the Mathematics subjects. Test is consisted five items. Difficulty level of item is distributed from the easy until difficult. The research was done for students in SMAN 1 Kediri, class of XII IPA. The result of research shows that the student-s cognitive process in HOTS is low level. The student could not finish the item test well. The half of student could finish one from five item. The none of student could finished the four item rest well. The reasons are (1) the student did not understand the test item well, (2) the students could not transform test items to picture format and Mathematics formula, (3) the students forget mathematics formula and its procedures (4) the students never did the test items such as that items. The process of finishing items shows that the student cannot relate some concept to the other concept well. Students could not analyse and create finishing procedure of items well, which involved student-s cognitive process such as Bloom-s Taxonomy.

Keywords
Cognitif Process, HOTS, Mathematics

Topic
Mathematics Education

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

Corresponding Author
IDHA NOVIANTI

Institutions
a) UT
b) UPI

Abstract
The selection of the right learning model can improve student achievement. This study aims to determine the effect of using Quantum Teaching learning models on students comprehension abilities. The research sample was 7th-semester students who took elementary mathematics learning courses in the Tangerang district study group randomly selected as many as two classes, the first class as the experimental class, namely the class with the Quantum Teaching learning model and the second class as the Control class, namely the classroom with conventional learning. The instruments used were 1) pretest-posttest, and 2) observation sheet. Data is processed with SPSS. The result is a class with a Quantum Teaching learning model that shows better understanding skills than the control class, sig-value (2-tailed) (0.016) <α=(0.025), ie there is a difference in comprehension ability between classes with Quantum Teaching learning models with ordinary learning classes , from the table of statistical groups it is known that the mean value of the class with the Quantum Teaching learning model (85.0) is greater than the average class average (62.0), and the average N-gain class value with the Quantum Teaching learning model has a high increase (0.81), while the ordinary N-gain class has a moderate increase (0.5), so the Quantum Teaching learning model can improve students comprehension abilities, and students appear to be more confident because in this learning model there are many interactions that maximize the learning process.

Keywords
Mathematical Understanding Ability, Quantum Teaching-Learning Model, FKIP students

Topic
Mathematics Education

Link: https://ifory.id/abstract/q3ef4Pb78rmV

Corresponding Author
ardi dwi susandi

Institutions
1, 2, 3, 4 State University of Malang, INDONESIA

Abstract
The strategies used in solving problems can be influenced by cognitive style. This research is a qualitative descriptive study. The purpose of this study was to describe the mathematical critical thinking skills of junior high school students based on the cognitive style of Dependent Field (FD) and cognitive style Field Independent (FI) in solving SPLDV problems. The subject of this study consisted of 1 student who had the FD cognitive style and 1 student who had the FI cognitive style chosen by purposive sampling. Data collection techniques were carried out by administering the cognitive style test of the Embedded Figure Test (GEFT) Group, mathematical problem solving tests, interview guidelines, and documentation. Data were analyzed based on FRISCO critical thinking category indicators (Focus, Reason, Inference, Situation, Clarity, and Overview) in each step of problem solving, namely understanding problems, arranging plans, implementing plans, and checking again. Data analysis is done by reducing data, presenting data, and drawing conclusions. The results showed that students who had the cognitive style of FD and students who had the cognitive style FI had good critical thinking skills in each step of problem solving according to Polya.

Keywords
Keywords: Critical Thinking Ability, Mathematical Problem Solving Questions, Cognitive Field Dependent Style (FD), Cognitive Field Independent (FI) Style, and Polya Problem Solving.

Topic
Mathematics Education

Link: https://ifory.id/abstract/LZxXb94hfARK

Corresponding Author
Reni Astuti

Institutions
IKIP PGRI Pontianak

Abstract
This study aims to look at the role of van Hiele model learning with the Local Wisdom-based Contextual Approach in building individual character and group character of students. The population in this study were eleventh grade students in the city of Pontianak with a sample of 75 students. Based on the results and discussion, it was concluded that (a) on individual characters for each aspect of individual character, namely meticulous, creative, unyielding, and curiosity in Van Hieles learning class with a Local Wisdom-based Contextual Approach (PVKK) was better than ordinary learning (PB). ; (b) on group characters for each aspect of group character, namely aspects of leadership, mutual respect, cooperation, and caring attitude in the PVKK class is better than PB class. All aspects of the individual character of students both in the PVKK class and in PB classes have the same category which is starting to develop. Whereas in the aspect of group character both in the PVKK class and in the PB class almost all have categories of developing (MB), except for aspects of leadership in PB classes that have a visible category (MT).

Keywords
individual character, group characters, van Hiele model learning with the Local Wisdom-based Contextual Approach.

Topic
Mathematics Education

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

Corresponding Author
Suci Hardianti

Institutions
Sriwijaya University

Abstract
One of the issues in mathematics education was many math problems requiring reasoning skills were included in the National Examination. This was part of the attempts to gradually adjust Indonesian standards to international standards such as PISA. The purpose of this article was to assess the potential effects of PISA-type math problem on students- math literacy abilities. The method used in this article was design research type development studies which consists of 2 stages, preliminary and formative evaluation. The preliminary stage consists of analysis and design. In the formative evaluation consists of self evaluations, expert reviews, one-to-one, small groups and field tests. The potential effect of the problem was indicated by the results in the field test stage. The mathematical literacy abilities that emerge were communication skills, mathematics, representation, reasoning and arguments, choosing strategies in solving problems and the ability to use language, symbolic, formal and technical operations. Communication skills dominate over other mathematical literacy abilities.

Keywords
Math literacy; design research; PISA

Topic
Mathematics Education

Link: https://ifory.id/abstract/wdMqk72vf3Jp

Corresponding Author
Eka Senjayawati

Institutions
1Pendidikan Matematika, Institut Keguruan dan Ilmu Pendidikan Siliwangi, Jl. Terusan Jenderal Sudirman, Cimahi 40526, Indonesia

*ekasenjayawati[at]ikipsiliwangi.ac.id

Abstract
This research aims to learn and analyze the capability of the students mathematical material connection withvector analysis. The Data collected are the result of test instruments and interview result with Several students. The method of this research uses descriptive qualitative method. The subject of this research is Siliwangi Teachers Training Students who have taken material vector analysis. Based on the Data from the analysis of the test results of the mathematical connection of the problem indicator, the first indicator percentage is Obtained items, namely finding the relationship between the various concepts of representation and procedures, then understanding the relationship betweenmathematical topics, the presentation is 41.25%. The second indicator of understanding the equivalent representations of the same concept, the presentation is 67.5%. The third presentation indicator, using mathematics in other fields of study or in daily life is 65%. As for the fourth indicator, use an evaluation of the relationship between mathematical topics and the mathematical topic outside is 47.5%. The results of the interviews show that students sometimes forget to use formula prerequisite concepts as material.

Keywords
Mathematical Connection, Vector Analysis

Topic
Mathematics Education

Link: https://ifory.id/abstract/H8rb7GRV3Awf