Indonesia Conference Directory

Corresponding Author
sudirman sudirman

Institutions
a) Universitas Wiralodra, Jln. Ir. H. Juanda Km 3 Indramayu 45211, Indonesia
*sudirman[at]unwir.ac.id
b) Universitas Pasundan, Jl. Sumatera No.41, Babakan Ciamis, Sumur Bandung, Kota Bandung, Jawa Barat 40117, Indonesia

Abstract
This study integrated ethnomathematics into augmented reality technology (AR) with the aim of assisting mathematics pre-service teachers- learnin geometry technology. The research used was ADDIE (Analysis, Design, Development, Implementation, and Evaluation) approach. The stages used in this study consisted of (1) exploration; (2) design, (3) development; and (4) implementation. This study used two data analysis techniques: (1) qualitative was conducted for exploration studies, describing the design and development process; (2) quantitative was conducted to investigate the result of the use of integrated ethnomathematics AR technology implementation to 56 Mathematics pre-service teachers- at Indramayu, Indonesia. The results showed that (1) ethnomathematics values in the form of uma lengge traditional house, ethnic karo houses, wa rebo traditional house, demak grand mosque, kaghati kolape kite can be used as marker objects on augmented reality technology and to explain geometry concept;. (2) The design stages consist of designing integration concepts, AR interfaces, and learning system development;. (3) The results of implementation analysis can (a) help to increase learning interaction activities (b) improve the understanding of concepts and geometry visualization, (c) provides information to Mathematics pre-service teachers-related to ethnomathematics and local wisdom in Indonesia.

Keywords
Ethnomathematics; Augmented Reality (AR) Technology; Geometry Learning; Mathematics pre-service teachers-

Topic
Mathematics Education

Link: https://ifory.id/abstract/EHM7CYZVxNQq

Corresponding Author
Sani Aryanto Aryanto

Institutions
(a) Program Pendidikan Guru Sekolah Dasar, Universitas Bhayangkara Jakarta Raya
Jl. Perjuangan No. 81, Bekasi 17143, Indonesia

*sani.aryanto[at]dsn.ubharajaya.ac.id

Abstract
Scientific literacy is an important aspect that can be used as a provision for students in facing the era of disruption, so this study aims to describe the development of scientific literacy in elementary schools through the implementation of ecoprenuership program. Case study research is used as a method that is considered relevant in providing an overview of the development of scientific literacy in 22 special students especially focused on 6 students as gatekeepers. The results of this research were supported by data from 2 orthopedists, 5 teachers in the class, a extracurricular teacher, and a headmaster. This research proves that the implementation of ecopreneurship program can be the basis for developing scientific literacy in the school. This can be seen in the learning process which are considered capable to accommodate the needs of each special students, even though in their implementation each student has their own limitations cause treatment and the intervention of each student is different. The diversity of treatment of students produces varied findings on scientific literacy development. The results of this study are expected to be a reference for the school in developing scientific literacy as a preventive effort in the face of disruption era.

Keywords
Scientific literacy; Ecopreneurship; Special Student.

Topic
Science Education

Link: https://ifory.id/abstract/nCpayPb6cZXe

Corresponding Author
Inne Marthyane Pratiwi

Institutions
a) Universitas Islam Negeri Sunan Gunung Djati
Jalan A.H. Nasution No. 105, Bandung, Jawa Barat, Indonesia
b) SDN Bantarmangu 01
Jalan Gunungtiga, Cimanggu, Cilacap, Jawa Tengah, Indonesia

Abstract
Numeracy literacy deals with the application of mathematical concepts in daily life. In this study, the worksheets are designed to present mathematical concepts in daily life by using story problem. Students are presumed to be able to solve story problem if they can understand the meaning of the problem. Thus, students can find problem that need to be solved in the right way. This study aims to investigate the correlation between mathematical understanding skill with reading comprehension skill of elementary school students. The study implemented the correlation method by involving 4th grade students in two elementary schools. Data collection techniques used technical tests. Then, the data is analyzed by simple regression test. The result of the study shows that there is a positive correlation between mathematical understanding skill with reading comprehension skill of elementary school students. The students not only understand mathematical concept and gain reading comprehension skill but also know about Indonesian local wisdom. This is due to the concept of story problem integrated with local wisdom material.

Keywords
local wisdom, mathematical understanding, reading comprehension, story problem

Topic
Mathematics Education

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

Corresponding Author
Bagus Eko Nugroho

Institutions
Universitas Sebelas Maret

Abstract
Mathematics has an important role in development in all aspects of life. Through mathematical modeling, students can be trained to think critically and creatively in solving problems related to everyday life. The habit of critical thinking using intuition can help determine the initial steps and bring up creative ideas in solving the problems they face. This study aims to describe the characteristics of the intuitive reasoning model of students of rational personality types in solving HOTS problems in mathematics. The subjects in this study were grade VIII students of DAHA 1 PAWYATAN SMP Kediri who had been selected based on rational personality types through Kierseys personality test. The intuition data used by the subjects in this study were collected using task-based interviews. The results of this study are that the subjects did not rewrite the important things in the question when answering, such as what is known and what was asked by arguing that this is usually true. In general the subjects in this study used an implicit intuitive reasoning model and diagrammatic model to solve the HOTS problem given.

Keywords
intuition characteristic; hots; rational personality type

Topic
Mathematics Education

Link: https://ifory.id/abstract/r7cbDveaXyPG

Corresponding Author
Hasby Hasby

Institutions
(a*, c, d) Departemen Pendidikan Kimia, Universitas Samudra, Jl. Kampus Meurandeh No.1, Kota Langsa 24416, Aceh-Indonesia
*Hasby[at]unsam.ac.id
(b) Departement Pendidikan Biologi, Universitas Samudra, Jl. Kampus Meurandeh No.1, Kota Langsa 24416, Aceh-Indonesia

Abstract
The purpose of this study is (1) conduct an inventory of research results using secondary metabolites that have been carried out by researchers, (2) develop a chemistry-based chemical lab module based on the results of the inventory. The research uses research and development (R&D) and survey methods. The research data was obtained through documentary studies, questionnaires, and experiments. The technique of analyzing documentation data and experiments was carried out by the process of data reduction, presentation, conclusion drawing and data verification. The results obtained after the data reduction process, there are 30 references to the results of research on the utilization of secondary metabolites used in the study. This is done on the consideration that the results of the research can be carried out on a practicum scale, the tools and materials used are cheap and easy to find, and are a source of local natural materials. The percentage of the content and material design validation results in the modules are 80.2% and 86.2%, respectively, which are valid and feasible. Meanwhile, the results of the module practicality test on a small scale on 10 students as module users obtained a percentage of 80.8% and included in the good category.

Keywords
Inventory, secondary metabolites, lab modules

Topic
Chemistry Education

Link: https://ifory.id/abstract/EmgvTVryzZq6

Corresponding Author
Rini Fath Marsya

Institutions
a) Program Studi Magister Pendidikan Kimia, Sekolah Pasca Sarjana, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudhi No. 229, Bandung, 40154, Indonesia
*rini.f.marsya[at]upi.edu

b) Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr.Setiabudhi No.229, Bandung, 40154, Indonesia.

Abstract
This study aims to investigate the pre-service chemistry teachers- (PCTs-) views of the nature of science and technology (VNOST) for organic light-emitting diodes (OLED) learning. OLED technology contains aspects of VNOST and could be integrated into chemistry learning in the classroom. It was recognized that the exploration of views held by PCTs- on the nature of science and technology (NOST) is an essential step forward towards documenting views and beliefs held by these teachers. Adequate PCTs- VNOST will bring critical to effective classroom learning. The investigation of VNOST used a questionnaire from Aikenhead. The NOST questionnaire consisted of eight multiple-choice items with four aspects. These four aspects are the definition of science and technology, the epistemology of science, the internal sociology of science, and the external sociology of science. The VNOST were classified into three categories. These three categories are realistic (R), has merit (HM), and naïve (N). The results show that the PCTs were classified into R category in three NOST sub-aspects, into HM category in four NOST sub-aspects, and into N category in one NOST sub-aspect.

Keywords
Pre-service chemistry teacher; Nature of science and technology; Organic light-emitting diodes

Topic
Chemistry Education

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

Corresponding Author
Asep Kurnia Jayadinata

Institutions
a) General education and Character, Universitas Pendidikan Indonesia Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia
*asep_jayadinata[at]upi.edu
b) General Education and Character, Universitas Pendidikan Indonesia Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia
c) Biological Education, Universitas Pendidikan Indonesia Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia

Abstract
Environmental changes due to the irresponsible application of technological innovation and human behavior that are not environmentally friendly have caused various environmental crises. Various studies recommend the importance of the role of science education in building citizens scientific literacy abilities. Therefore, this ability needs to be possessed by all students of primary school teachers (PGSD students) as part of citizens. PGSD students literacy scientific abilities are focused on the nature of science (NOS) and attitudes toward teaching NOS. This study aims to obtain information about the views of students about the nature of science concept (NOS) and attitudes toward teaching NOS obtained from filling questionnaire instruments views on science and education (VOSE). Data were obtained from 132 students of the 2017/2018 academic year who had completed their lectures (GD302) in science education in elementary schools. The findings of this study revealed that PGSD students were able to feel some of the problems of cencept NOS and held a positive attitude towards some NOS teaching problems.

Keywords
Literacy scientific;Nature of Science, Views On Science and Education (VOSE)

Topic
Science Education

Link: https://ifory.id/abstract/2TvN3MQZuzpc

Corresponding Author
Harun Abdul Rohman

Institutions
(a) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*Harun88pltg[at]upi.edu

Abstract
An ellipse can be obtained through the conic section, if the plane intersects one of the pieces of the cone and its axis but is not perpendicular to the axis, the intersection will be an ellipse. Besides that, a circular cylinder cut by a plane that has a slope between 0 degrees and 90 degrees against the base of the circular cylinder, the intersection forms an ellipse. The purpose of this study that 1) determine the equation of the ellipse in terms of the circular cylinder section approach and 2) determine the area of the ellipse in terms of the circular cylinder section approach. The method we used in this research is literature studies from several books that are relevant to research. The results showed that 1) the equation of ellipse can be derived from the approach of circular cylinder section and 2) the area of ellipse can be obtained using the circular cylinder section approach. We conclude using this circular cylinder section approach, we can obtain the same formula both for equation and area as the conic section.

Keywords
the circular cylinder section, the equation of ellipse, the area of ellipse

Topic
Mathematics Education

Link: https://ifory.id/abstract/BXz4vpfWuyQk

Corresponding Author
Sri Hartini

Institutions
1 Departement of Natural Science Education, Postgarduate School, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budi N0. 229, Bandung 40145, Indonesia
2 Departement of Physics Education, FKIP, Universitas Lambung Mangkurat, Jl. Brigjen H. Hasan Baseri Kayu Tangi, Banjarmasin 70123, Indonesia

Abstract
Introductory Nuclear Physics course is found in the curriculum of pre-service physics teachers in the Institute of Teachers Training at South Borneo. This research is carried out which aims to describe the implementation of the course and the perceptions and knowledge of nuclear physics for pre-service physics teachers. This research used a descriptive quantitative method. The research sample used purposive sampling which consist of 42 students on eighth semester and one lecturer of the course. Data was collected through documentation techniques, questionnaires, interviews and observations. The results of the investigation showed: (1) the course process was not interesting enough by the dominant lecture method of the course and teaching materials written by lecturers without using the latest research results; (2) pre-service physics teachers tend to have negative perceptions and their knowledge were only limited to the knowledge contained in teaching materials written by the lecturer. Therefore, improvements are needed in the course process to answer the challenges of negative nuclear effects through the Education for Sustainability Development (ESD) approach and utilize the latest research results.

Keywords
introductory nuclear physics, pre-service physics teacher

Topic
Physics Education

Link: https://ifory.id/abstract/uBYe78xvKTPF

Corresponding Author
Sujito Sujito

Institutions
a) Program Studi Doktor Pendidikan Ilmu Pengetahuan Alam, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*sujito[at]upi.edu;
b) Pendidikan Fisika, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, Indonesia
*sujito.fmipa[at]um.ac.id

Abstract
Mathematical Methods for Physics learning should master study material holistically and collaboratively for meaningfully learning. The aim of this research is to describe the process for Mathematical Methods for Physics course at the candidate of a physics teacher. Data were collected using a questionnaire, interviews with lectures and student, and observation. The result this research revealed that no contextual on teaching and learning process, the learning process of mathematical methods for physics is not applicable and very mathematical dominant, teaching material is not interest, and lectures are not conducted to equip students with 21st-century skills. This is causes students have not understood the concept and have difficulty learning of Mathematical Methods for Physics.

Keywords
physics teacher candidate, mathematical methods for physics, phenomena, course

Topic
Physics Education

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

Corresponding Author
Hernani Hernani

Institutions
1Department of Chemistry Education, Indonesia University of Education

Abstract
Ionic polymer metal composite (IPMC) is one type of artificial muscle technology. This demonstration IPMC based on ionic liquid has the potential to introduce four main aspects of VNOST, such as (1) the characteristics of science and technology, (2) the aim of science and scientific research, (3) the characteristics of scientific knowledge and scientific theories, and (4) the relationship between science and technology. Like the main purpose of VNOST, the introduction of this IPMC based on ionic liquid is not only introducing technology, but introducing the link between technology and science, especially chemistry content. Context-related chemistry content that is at the stage of making chitosan sulfonate membrane involves chemistry contents in the form of solution pH, Lewis base acid theory, sulfonation reaction, substitution reaction, and conductivity. In addition, the stages of the membrane actuation mechanism involve chemistry contents in the form of electrostatic forces, electrolytes, hydrolysis and the relationship of the melting point with the molecular weight.

Keywords
Artificial muscle of Ionic Polymer Metal Composite (IPMC), ionic liquids, demonstrations, pre-service teachers-, dan VNOST (View Nature of Science and Technology).

Topic
Biology Education

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

Corresponding Author
Nadya Damayanti

Institutions
(a) Department of Physics Education, Universitas Negeri Semarang, Indonesia
(b) Science and Mathematics Department, Matthayom Siriwanwari II Secondary School, Songkhla, Thailand.
*damayanti.nd14[at]gmail.com

Abstract
There are many challenges faced by some countries which lead them to revise their educational curriculum, including in Thailand. In Thailand, the revised of curriculum in science learning field with SEPs indirectly demands teachers to include High Order Thinking Skills in their teaching and learning as well as in assessment process. By concerning this phenomenon, this study was aimed at describing the realization of the cognitive levels from bloom taxonomy used by Physics teachers. Six classifications of the cognitive levels in bloom taxonomy were divided into two order thinking skills, namely Low Order Thinking Skills (LOTS) and High Order Thinking Skills (HOTS). To achieve the aforementioned objectives, this study employed qualitative research design. Accordingly, the subjects of this study were a Physics teacher in Matthayom Siriwanwari II Songkhla Secondary School and students in two classes, covering matthayom 5th and matthayom 6th. As stated earlier, there were three types of analysis in this study, the analysis of level, the evaluation of level, and the creation of level. Besides, the reasons which interfered the teacher to use cognitive level of bloom taxonomy High Order Thinking Skills were also investigated. The results showed that according to the analysis of matthayom 5th and 6th physics final examination items the cognitive levels used were 0% of remembering, 3.3% of understanding, 33.3% of applying, 50% of analyzing, 3.3% of evaluating, and 3.3% of creating. Meanwhile, matthayom 6th had 0% of remembering, 0% of understanding, 25.7% of applying, 51.4% of analyzing, 5.7% of evaluating, and 17.1% of creating. By referring to these results, it is known that the physics test items used small portion of evaluating and creating aspects. Based on these findings, it is known that the portions of evaluating and creating aspects are still low. However, these results actually can be a starting point in fulfilling the demand of the revised curriculum by the ministry of education.

Keywords
HOTS items; Physics assessment; secondary school

Topic
Physics Education

Link: https://ifory.id/abstract/m2FbfyndeChP

Corresponding Author
Venny Iswantiningtyas

Institutions
1,2,3) Universitas Nusantara PGRI Kediri

Abstract
Play and Games are two aspects that are familiar and very close to children. The game can be an effective learning tool for early childhood. Traditional Javanese games can be a learning suggestion for kindergarten students to practice social skills and introducing mathematics in a fun way. Children will be more interested in learning mathematics. This study aims to develop traditional Javanese games that can train the ability to socialize and introducing mathematics from an early age. Traditional games developed include Dakon and Gejlig. The development of traditional games is based on the needs of kindergarten students to learn mathematics and learn to socialize. The sample in this study were kindergarten students who were invited to study mathematics while playing. Two of the games taught to children are Dakon and Gejlig. The Dakon game is played by two students. Through the Dakon game, students are trained to learn to count and recognize simple addition and subtraction operations by counting the seeds played. Students who win are students who at the end of the game Dakon get more seeds than their friends. In the game of Gejlig, the number of students playing is not only two, but can be in groups of four or five students. In this game students can take turns jumping on a flat building that has been arranged on the floor / ground. If the traditional game is usually, flat buildings drawn only in the form of a square or half circle, in this study students are free to create their own set of flat building that they will use to play. Thus, students know more about waking up flat through the game of Gejilg. Javanese Traditional games can be an interesting media for early childhood to learn mathematics and learn to socialize with their peers. The results of this study indicate that through traditional Javanese games, there are many mathematical concepts that can be taught to students, such as the concept of addition and subtraction and shapes.

Keywords
Kindergarten, Mathematics for Early Age, Javanese Traditional Games, Shapes, Mathematics Operation

Topic
Mathematics Education

Link: https://ifory.id/abstract/En2NPgMVdrR3

Corresponding Author
Aan Hasanah

Institutions
a) Departemen Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
b) Departemen Pendidikan Kimia, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
Ability of problem solving is closely related to representation. A complicated problem would be much simpler when the utilization of representation is in accordance with problem. Process of developing representation is influenced by the proper perception and precise comprehension of basic concept. This paper discusses the result of study which uses quantitative method to analyze statistically the difference problem solving ability that is related to level of basic concept ability namely: low, mediocre, and high as well as analyze statistically the difference of problem solving ability based on types of representation that is abstract, visual, and multiple toward the science problem. This study is conducted at four primary schools involving 137 students in Bandung, Indonesia. The result of study shows that there is the difference of problem solving ability related to level of basic concept ability however there is no difference problem solving ability based on the types of representation.

Keywords
Representation, Problem Solving

Topic
Mathematics Education

Link: https://ifory.id/abstract/m4vnxUqZTg9r

Corresponding Author
BONITA CHINDIANI N

Institutions
a) Post Graduate School, Indonesia University of Education
Jl. DR. Setiabudi No 229, Bandung, Indonesia,
bonitachindianin[at]upi.edu
b) Indonesia University of Education

Abstract
Justification ability can support other mathematical abilities and dispotions and can confirm student-s understanding. It is very important to able to know the student-s justification abilities. The purpose of this study was to determine mathematical justification ability of the first middle student, using qualitative methods from 21 student in one of junior high school in Bandung. Students are given triangle and quadrilateral question to do justification. The result showed that there are 3 level justification of junior high school student. The first level is students assume based on their own thinking, the second level is student explain with mathematical concept but are less precise and the third is student explain with the right and complete mathematical concepts. But when justification involving calculatios, generally student can do justification correctly only a few student make mistake because of miscalculation.

Keywords
Justification

Topic
Mathematics Education

Link: https://ifory.id/abstract/wpkxYA7qbDFP

Corresponding Author
Yusi Nur Apriyani

Institutions
a. Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*yusinurapriyani[at]upi.edu
b. Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The purpose of this study is to analyze the learning obstacle that student commit in basic trigonometric equations. This study used descriptive qualitative method, employing phenomenological research design. The focus of the phenomenon in this study is the obstacles that student commit in basic trigonometric equations. Data was collected through a test that was tested to 11th grade students who had learned basic trigonometric equations. The result showed that the learning obstacle that student commit in basic trigonometric equations have been categorized into 3 (three) types, that is learning obstacle of concept image, learning obstacle that related to various information and learning obstacle in mathematical representation.

Keywords
Learning obstacle; Trigonometric Equations

Topic
Mathematics Education

Link: https://ifory.id/abstract/LhQnX6Jdv8gy

Corresponding Author
Wulansary Kartika Hayati Wahyono Putri

Institutions
Program Studi Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*wulansary.k[at]student.upi.edu

Abstract
This research was implemented to students from the 4th grade and 7th grade in one of elementary and junior high schools around Bandung city. The initial problem that became a background of this research was the difference ability and learning experience of elementary and junior high school students when learning the area of triangle concept. So that the learning carried out should also be different according to the needs of students. The focus on this research was to develop the Hyphotetical Learning Trajectory (HLT) that is appropriate for the needs of elementary and junior high school students based on the results of teacher and students interview and learning observation. This research used the qualitative method in the form of a didactical design research through three phases of analysis that are prospective analysis, metapedadidactic analysis, and retrospective analysis, with the triangulation technique for collecting data. Based on the results and discussion of research, the learning trajectory for elementary students is concluding the triangle area formula based on concrete activities, while for junior high school students is proving the formula of the triangle area and applying it in more complex problems.

Keywords
Learning situation; the area of triangle; learning trajectory; elementary school; junior high school

Topic
Mathematics Education

Link: https://ifory.id/abstract/XQwA4YzWVFBx

Corresponding Author
Elvida Safitry Zainuddin

Institutions
a) Masters of Teaching Program, Bandung Institute of Technology, Jalan Ganesha 10, Bandung 40132, Indonesia
*elvidasafitry[at]gmail.com
b) Physics of Earth and Complex System Reasearch Division, Bandung Institute of Technology, Jalan Ganesha 10, Bandung 40132, Indonesia

Abstract
Asphalt in Buton Island, Southeast Sulawesi, Indonesia, has a large reserve amount of around 650 million tons. In Buton, asphalt is only used for road construction, but this asphalt has characteristics that can be utilized as a substance to produce crude oil. We study its characteristics to know the process of processing Buton asphalt into crude oil based on literature. Asphalt characteristics are studied from their physical properties and mineral content. Samples are taken in Kabungka (Winto mine), Lawele, and Sampolawa to compare their density. They are found that the density obtained from all samples is in the range of the literature and has the characteristics that approximate the characteristics of oil shale in the Green river, United States of America. It is expected that learning about Buton asphalt can expand the knowledge for students about the advantage of Buton asphalt as a natural resource and a source of learning.

Keywords
Asphalt, Oil Shale, Buton Island

Topic
Physics Education

Link: https://ifory.id/abstract/cNbGQKW2hU6w

Corresponding Author
Vira Pratiwi

Institutions
(1) Pendidikan Guru Sekolah Dasar, Universitas Bhayangkara Jakarta Raya, Jl. Perjuangan No. 81, Bekasi 17143, Indonesia
(2) Pendidikan Matematika Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No.229, Bandung 40154, Indonesia

Abstract
This research was conducted by analyzing the learning obstacles that were found to be used as the development of learning trajectory thinking algebra. Learning trajectories are composed of systematic material about tables and diagrams for elementary schools. Problem modeling is represented through tables and diagrams from concrete to abstract levels. The process of analysis results in an alternative didactic situation that can overcome osbtacles in algebraic thinking. this study is conducted by utilizing a qualitative research with hermeneutics and phenomenology paradigms. This research was conducted by analyzing the learning obstacles that were found to be used as the development of learning trajectory for algebraic thinking. The result of this research is a learning trajectory which is a part of lesson design of algebraic thinking for elementary school.

Keywords
algebraic thinking, elementary schools, learning trajectory.

Topic
Mathematics Education

Link: https://ifory.id/abstract/dnYwzaqvbyJ3

Corresponding Author
Chaerul Rochman

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
This study aims to analyze the literacy of physics concepts based on several types of natural resources in middle school students. The method used in this study is a descriptive participatory method. Samples were collected from 218 high school students around the location of natural resources in West Java. What is the profile of the physics concept for each type of natural resource and how students struggle to express physics concepts, and how to strengthen the literacy skills of students physics concepts. Data analysis was conducted in two types of ways, namely analyzing the results of literacy tests and then analyzing the literacy component, and triangulating qualitatively. The results showed that the ability of physical literacy in all types of natural resources was below average. Difficulties of students generally cannot apply the physics concepts learned in schools with the phenomenon of several types of natural resources contextually. The alternative to improving literacy skills is with sources of enrichment that are both conventional and digital

Keywords
Literacy skill, Natural resource, and Physics concept

Topic
Science Education

Link: https://ifory.id/abstract/3DR4WKcmwAj6

Corresponding Author
Ishmatul Maulaa

Institutions
1) Departement Pendidikan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2) Departement Pendidikan Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
3) Departement Pendidikan Kimia, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

*ishmatulmaulaa[at]upi.edu

Abstract
This study presents a review of literature on the development of global warming e-book oriented to environmental literacy which can be used in science learning in junior high school. Education has a very important role to involve the common people in an effort to reduce global warming. One solution that can be done so that students get information about global warming is by learning media. E-books can be one of the media used in good learning for students. The purpose of this study was to develop and find out the effectiveness of the use of global warming e-book oriented to environmental literacy. This research method is research and development (Research and Development) with ADDIE design (Analysis, Design, Development, Implementation, Evaluation). The results show global warming e-book has gone well and provides a role in increasing students environmental literacy at the value of effectiveness obtained at 48.87 (medium category).

Keywords
environmental literacy, global warming, science learning, e-book

Topic
Science Education

Link: https://ifory.id/abstract/mGKXu4L9vyUW

Corresponding Author
Ade Faridah

Institutions
a) Mahasiswa Pascasarjana Pendidikan Biologi, Universitas Pendidikan Indonesia Jl. Dr. Setiabudi no. 229, Bandung 40154, Indonesia.
*adefaridah[at]upi.edu
b) Pendidikan biologi, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no. 229, Bandung 40154, Indonesia.

Abstract
The Baduy have a set of customary rules (pikukuh) and habits that are passed on to their offspring through oral language that can fade over the times. Important local wisdom is introduced to students as part of the learning process because it is close to everyday life, one of them through teaching materials. Therefore, the purpose of this research is to analyze the values of the local wisdom of the Baduy tribe to develop biology teaching materials in class X (ten) of High Schools. Data collection by means of interviews, field observations and documentation is analyzed descriptively. The primary data in this study is the Pikukuh tribe in environmental management. The results showed there were eight pikukuh in environmental management that could be appointed to develop teaching materials. Pikukuh contains local wisdom values including conservation values, sustainability values, balance values of environmental care values, politeness values, discipline values, and cultural values. These values can be internalized into biology teaching materials in one of the basic competencies in class X of Senior High School, namely analyzing information/ data from various sources about the ecosystem and all interactions that take place in it and simulating interactions between components in an ecosystem.

Keywords
Local wisdom values; Pikukuh; Teaching material

Topic
Biology Education

Link: https://ifory.id/abstract/w629xPQu3z7d

Corresponding Author
Muhammad Ghiyats Ristiana

Institutions
Department of Mathematics Education, Universitas Pendidikan Indonesia
Jl. Dr. Setiabudhi No. 229, Bandung 40154, Indonesia
*kanghiyats[at]upi.edu

Abstract
Logical thinking is an ability that everyone needs, without exception. Someone who has good logical thinking will be able to finish their problem with the right strategy. As a teacher, this ability is very important, especially if they teach in primary school. The existing phenomenon in mathematics lessons is they always teach just procedural work, however, a teacher shouldn-t be like that. A teacher that couldn-t explain a mathematics concept can be said they don-t have sufficient logical thinking skills. The aim of this research is to prove whether that phenomenon is right or not. In order to do so, we used descriptive qualitative methods by taking some active primary school teachers and provided some simple mathematics questions to see whether they can explain a mathematical concept or they just use a procedural work. The result shows that most of the teachers used procedural work to answer the questions. This means that they don-t have sufficient logical thinking skills. So the phenomenon right exists. Therefore, to reduce this phenomenon in the education world, a teacher should understand well the concept that they will teach, especially in mathematics lessons.

Keywords
Logical Thinking Skills; Primary School Teachers; Mathematics

Topic
Mathematics Education

Link: https://ifory.id/abstract/uXZdpk4hqewK

Corresponding Author
Viarti Eminita

Institutions
Pendidikan Matematika, Fakultas Ilmu Pendidikan, Universitas Muhammadiyah Jakarta, Jln. KH Ahmad Dahlan, 15419 Indonesia
Pendidikan Guru Sekolah Dasar, Fakultas Ilmu Pendidikan, Universitas Muhammadiyah Jakarta, Jln. KH Ahmad Dahlan, 15419 Indonesia

Abstract
Recently, Multiple-Intelligence-Based learning models have been widely used in classroom learning. Students are taught based on their multiple intelligences to have a good learning experience, but teachers must be able to recognize and map students intelligence before applying this learning model. This study aims to describe and properly map the multiple intelligence of children using biplot analysis. The research method used in this research is descriptive quantitative method. This research was conducted at Labschool Faculty of Education Science University of Muhammadiyah Jakarta (FIP UMJ) Primary School. Sample in this research is students in class 4.2. This analysis is expected to classify students based on the similarity characteristics of children, so that in one group has the same vision in problem solving. The results showed that all variables of multiple intelligences had a positive correlation with each other, but had the lowest correlation with kinesthetic intelligence. In addition, variables that have the smallest diversity are natural and visual intelligences. There are 4 groups of students that can be formed in multiple-intelligence-based learning, in which each group has different intelligences performance.

Keywords
Biplot Analysis, Multiple Intelligence, Problem Solving

Topic
STEM Education

Link: https://ifory.id/abstract/hGLCW9gmK4Qt

Corresponding Author
Erwin Efendi Hutagalung

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

Abstract
Mathematical abstraction is a cognitive process when students construct their mathematics knowledge. This study explores mathematical abstraction of students related to the concept and the area of triangles. For this reason, firstly, the researchers developed four questions. This study was conducted in one junior high school in Bandung. Twenty three students, grade 7 (12-14 years old), were involved in this study. Data were collected through observation of the test results and followed by students- interviews. Finally, data was analyzed qualitatively. The researchers found that the low-achievement students tend to understand the triangles which consist of the interior area bounded by three straight lines and the lines themselves; they also tend to understand the area of triangles as the result of pattern of a base times height divided to two. Besides, there are indications that low-achievement students need help from teachers so that they can achieve higher level of abstraction.

Keywords
Mathematical abstraction; triangles;

Topic
Mathematics Education

Link: https://ifory.id/abstract/ekhD4ZjNpyc3

Corresponding Author
Ulfah Ekaludini

Institutions
a) Prodi Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia.
b) Prodi Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia

Abstract
Mathematical communication skills are one of the essential mathematical basic competencies of mathematics and mathematics education. Without good communication, the development of mathematics will be hampered. The purpose of this study was to determine the mathematical communication skills of high school students in solving trigonometry problems. This study also wants to reveal the difficult aspects of mathematical communication for high school students. The research design used was descriptive qualitative research involving students of class X MIPA 1 as research subjects. 36 students were taken as representatives from 3 groups, namely 12 high group subjects, 12 moderate group subjects, and 12 low group subjects. The instrument used in this study is a test of mathematical communication skills in the form of a description. Based on the research, the average mathematical communication skills of students in the upper group subjects, medium groups, and low groups are in the less category. The results showed that students ability to solve trigonometry problems with mathematical communication had not been achieved. Based on the results of the study it was found that students had difficulty resolving mathematical problems presented in the form of images. Students have difficulty expressing the mathematical concepts used.

Keywords
Mathematical communication, Trigonometry

Topic
Mathematics Education

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

Corresponding Author
Anwar anwar

Institutions
a) Departemen Pendidikan Matematika, Sekolah Pascasarjana Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
*anwar[at]upi.edu
b) Departemen Pendidikan Matematika, Sekolah Pascasarjana Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
c) Departemen Pendidikan Matematika, Sekolah Pascasarjana Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia

Abstract
Education for Sustainable development (ESD) has long been socialized by the government to be developed and implemented in education, but currently its implementation has not been implemented optimally. ESD is an education that makes learners aware of their environmental life in creating a sustainable future without sacrificing future generations. Indonesia is a country that actively engages in national development from various sectors. This development will have a positive or negative impact. The positive impact is that development in Indonesia is quite good, it can be seen from the sectors of economy, education, infrastructure, and so on. However, the negative came to the Environmental sector. This is where the concept of sustainable development needs to be studied and applied to schools. The purpose of this paper is to know the mathematical competence relevant to the ESD component in the geometry at junior high school. Mathematical competencies relevant to ESD are; understanding, problem solving, critical thinking, reflective thinking and mathematical communication.

Keywords
Education for Sustainable development (ESD), Mathematical Competency

Topic
Mathematics Education

Link: https://ifory.id/abstract/hM6aT9G2RWvp

Corresponding Author
Novianti -

Institutions
a) Departemen Pendidikan Matematika, Sekolah Pascasarjana, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
*novianti[at]upi.edu
b) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
The aimed of the study to analyze mathematical connection ability of the junior high schools students of grade VIII Bireuen, Aceh in solving the quadrilateral. This study used qualitative approach with descriptive methods. The research subjects were were 20 students of grade VIII (13-14 years). The instrument used is in the form of a description test. The results showed that overall mathematical connections were still low at 39%. While the percentage of each connection indicator between topics of mathematics is 35%, connections with other disciplines are 28%, connections with the real world are 53%.

Keywords
Mathematical; mathematical connection, solving quadrilateral

Topic
Mathematics Education

Link: https://ifory.id/abstract/8f2thjNDJQML

Corresponding Author
Laila Rahmi

Institutions
a) Prodi Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia
*lailarahmi[at]upi.edu
b) Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setia Budhi No. 229, Bandung 40154, Indonesia

Abstract
Problem solving ability is one of mathematics learning goals. Students problem solving abilities are good if they meet the indicator, able to solve closed mathematical problems in a mathematical context; able solve closed mathematical problems outside the mathematical context; solve open mathematical problems in a mathematical context; and solve open mathematical problems outside the mathematical context. But it was found that students problem solving abilities were still not good. This can be influenced by several factors including cognitive style and gender. The cognitive style in this study focuses on the Field Dependent (FD) and Field Independent (FI). This study conducted to analyze the influence of cognitive style and gender on students mathematical problem solving abilities. This research method was descriptive qualitative research. The subjects were six junior high school students. Students were given cognitive style tests and then problem solving abilities test. The results of tests and interviews was found that the mathematical problem solving abilities of male students with FD cognitive style were better than the mathematical problem solving abilities of male FI students. While the mathematical problem solving abilities of female students with the FI cognitive style were better than the mathematical problem solving abilities of female FD students.

Keywords
Problem Solving, Cognitive Style

Topic
Mathematics Education

Link: https://ifory.id/abstract/MHrzT7DYZfLK

Corresponding Author
Salasatun Nurul Azizah

Institutions
1) Mathematics Education Study Program, Graduate School, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia
2) Department of Mathematics Education, Mathematics Education Study Program, Graduate School, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract
Mathematics is seen by some students as a difficult subject that results in them being anxious when dealing with mathematics learning. What and how mathematics anxiety is an interesting issue to explore through research. This study aims to describe mathematics anxiety profiles of senior high school student based on the types of personality such as extrovert and introvert. It used the qualitative method with triangulation for collecting data in the forms of questionnaire extrovert and introvert personality, questionnaire MAS (Mathematics Anxiety Scale) and interview. The subject in the research were student from the 11th grade at one of the high school in Bandung. The result showed that : (1) Extrovert students assume that mathematics is difficult, feel worried and lack of enthusiasm when in the classroom activity, which the highest anxiety is when the examination and appointed by the teacher related to the material. The extrovert students feel scared, nervous, dizzy, and stomachache; (2) Introvert students assume math as a complicated but interesting subject. Sometimes they feel worried in classroom activities, although they calm and easy in facing examination. Their highest anxiety is when teacher pointed them, where they feel scare and not confidence.

Keywords
mathematics anxiety, extrovert and introvert personality

Topic
Mathematics Education

Link: https://ifory.id/abstract/UAnfad2Pu6LN