bluuebunny/crossref_metadata_2025 huggingface dataset:
Baksan large volume scintillation telescope: a current status
Authors: Petkov V B , Fazliakhmetov A N , Gangapshev A M , Gavrin V N , Ibragimova T V , Kochkarov M M , Kazalov V V , Kudrin D Yu , Kuzminov V V , Lubsandorzhiev B K , Malyshkin Yu M , Novikova G Ya , Shikhin A A , Sidorenkov A Yu , Ushakov N A , Veretenkin E P , Voronin D M , Yanovich E A
Published: March 2020

A current status of the project of a large volume scintillation telescope at the Baksan neutrino observatory is presented. The main research activities of the BLVST are low- energy neutrino physics, astrophysics and geophysics. To detect geoneutrinos, large-scale new- generation scintillator detectors located at large depths in the regions with a low background level from nuclear reactors are required. The Baksan Neutrino Observatory is geographically located in one of these places. Recently resumed R&D activities are aimed at the creation of new-generation telescope with a target mass of 10 kt at a depth of 4800 m.w.e. A small scale prototype is already under construction.
Simulation studies for neutron and muon-induced backgrounds in AMoRE-II
Authors: Bae HW , Kim HJ , Kim YD , Jeon EJ , Lee MH
Published: March 2020

The Advanced Mo-based Rare process Experiment (AMoRE) is an experiment to search for neutrino-less double beta decays of Mo100. The second phase of the experiment, AMoRE-II, will be conducted with 200 kg of Mo100-containing crystals. To reach a sensitivity goal at 12-22 meV level in the effective neutrino mass, AMoRE-II is required to have no background at the region of interest. Dominant sources of backgrounds are expected from environmental neutrons, cosmic muons, and muon secondaries. In this study, we perform simulations of the backgrounds from cosmic muon and environmental neutrons with the Geant4 framework. Using those simulated background sources, we have examined the performance of muon veto counters, and shielding structures with polyethylene and additional materials containing hydrogen and boron. We found an optimal background estimation of ckky level of 10−5 order of magnitude with “the best choice of the setup” which would be acceptable for the AMoRE-II experiment requirement.
Full Background Characterization of Felsenkeller Underground Laboratory
Authors: Grieger Marcel
Published: March 2020

Felsenkeller underground laboratory is a new 140 m.w.e. deep shallow-underground laboratory housing a 5 MV Pelletron ion accelerator for studies of nuclear astrophysics in Dresden, Germany. The no-beam background has been extensively studied for muons, neutrons and γ-rays and obtained data were matched by Monte-Carlo simulations for muons and neutrons with excellent agreement.
The SNOLAB underground laboratory
Authors: Hall J
Published: March 2020

The SNOLAB laboratory is 2 kilometers undeground in Sudbury, Ontario, Canada. The depth of this location results in a reduction of cosmic-radiation induced muons to the negligible level of one muon per square meter per day. The laboratory maintains cleanliness standards to control the radioactivity from dust falling out of the air, from human activity, and from research equipment brought into the lab. The resulting low-radiation environment enables a variety of research, and SNOLAB is focused on rare-event searches such as dark matter searches and nuclear decay studies. In order to enable and advance these research topics, SNOLAB is conducting research and development into cleanliness, low-level assay, radioactive gasses and cryogenics. SNOLAB collaborates, and competes, with other underground laboratories on these research and development topics, as well as operational topics, to support the global research community.
Radon/Radium measurement from Gd-loaded water
Authors: Pronost Guillaume
Published: March 2020

The Super Kamiokande-Gd project (SK-Gd) aims to load Gd powder into the SK water in order to detect the neutrons produced by v and

v
¯

interactions in the water. Despite Gd powder’s high purification, some radio-isotope contaminates are expected. Among them 222Rn, from 226Ra decays, is a threat for high-precision low energy physics experiments like the Super-Kamiokande experiment (SK). The measurement of 222Rn from Gd-water is then needed in order to allow monitoring of its concentration in the water, as well as to test the efficiency of radio-isotope removal methods still in development. Here we present the system used to determine the 222Rn concentration from pure water and Gd-water. We also show the measurements of 222Rn (226Ra) concentration from water loaded with different Gd powders.
Radon monitoring in the Kamioka mine
Authors: Pronost Guillaume
Published: March 2020

Radioactivity from radon is one of the main backgrounds for low energy experiments, like Super-Kamiokande and the other experiments hosted in Kamioka Observatory. In addition, it is an issue for the safety of the researchers and technicians working in underground laboratories. In the Kamioka Observatory, a total of 29 1-L radon detectors are deployed in different areas in order to monitor the radon concentration and ensure it stays below a certain limit. Here we briefly describe the 1-L radon detector system and their Raspberry Pi-based data acquisition system. The evolution of the tunnel’s radon concentration over the last 3 years is then shown and discussed.
Geant4 based Simulation Study for Super-Kamiokande
Authors: Harada Masayuki
Published: March 2020

Super-Kamiokande (SK) will start a new phase “SK-Gd” from next year. Currently, SK uses Geant3 based simulation, however, its development has already stopped. For the next 10 years of SK-Gd operation, updated detector simulation is essential. For diffuse supernova neutrino background search in SK-Gd, precise neutron simulation is crucial. Therefore, we developed Geant4 based SK simulation software, named’ SKG4’ . Starting from the construction of SK geometry, some comparisons with the current SK detector simulation has been done. In this presentation, the current status of the development for SKG4 and the result of the several physics simulations will be reported.
Research and development toward KamLAND2-Zen
Authors: Nakamura R. , Sambonsugi H. , Shiraishi K. , Wada Y.
Published: March 2020

The KamLAND2-Zen experiment is a future plan of KamLAND-Zen, which searches for neutrino-less double-beta decay (0vββ) of 136Xe, with low background measurements. The goal of this experiment is to reach a sensitivity of 〈mββ
〉 < 20 meV which covers the inverted hierarchy region. It can be achieved by increasing the light yield with light collecting mirrors, new brighter liquid scintillator and higher quantum efficiency photomultiplier tubes (PMTs) and scintillation vessel. In this paper, we describe the R&Ds for KamLAND2-Zen experiment.
Promoting global citizenship using statistics: The role of synchronous communication technology
Authors: Sri Padmi Russasmita , Pattanajak Auijit , Dwi Kristanto Yosep
Published: March 2020

The potential of synchronous communication technology to enhance distance learning has been widely explored, yet there is very little research on how this technology can be used in mathematics classroom. On the other hand, global citizenship has been increasingly discussed in international education forum these last few years. This paper report how synchronous communication technology can support statistics lesson in promoting global citizenship, as well as the potential and suggestion on the use of synchronous communication technology in the classroom.
Using the ELVIS II+ platform to create “learning is fun” atmosphere with the ISLE-based STEM approach
Authors: Irwandi I , Oktavia Rini , Rajibussalim  , Halim A
Published: March 2020

The topic of static and dynamic electricity is an abstract concept and relatively difficult for students to understand, especially in a case when the students were only taught about the electricity as a concept of electrical current, by means of the flow of electron, using analogy, without accompanied by practical experiments. This study aims to develop a lesson in the topic of dynamic electricity in an interesting and easy to understand approach using appropriate learning media that accompanied the abstract concepts with the real practical experiments. We used the equipment of ELVIS II+ (Engineering Laboratory Virtual Instrumentation Suite) from National Instruments to achieve the aforementioned goal. Props were designed to support various basic and advance dynamic electricity experiments. Selected topics relate to basic competencies 4.2 mandated by the ministerial regulation No. 24 in 2006 issued by the ministry of education and culture of the Republic of Indonesia (Permendikbud No. 24, 2016) exemplified by the capacitor charging and discharging experiments. It is expected that the activities would become interesting for the students since they were conducting the engineering process during the experiments that provided a fun learning. The more interesting part of the experiments was the understanding of concepts of science obtained from applying mathematics to solve differential equation problems. The application of mathematics appeared naturally when students constructing and solving the differential equations in order to understand the science behind the electrical phenomena. The most fascinating part for the students occurred when they can successfully proofed the solutions to differential equations with experimental results. Integrating the whole STEM (Sciences, Technology, Engineering, and Mathematics) components in the learning approach is proofed to be the key to the slogan of “learning is fun”. The experiment syntax followed the Investigation Sciences Learning Environment (ISLE) model so that the learning processes will develop thinking ability as prospective researchers in students.
Incorporating the use of comics in the secondary mathematics teaching of the order of operations
Authors: Musa N K H , Shahrill M , Batrisyia I , Azamain M S
Published: March 2020

This study explored the use of comics in teaching secondary mathematics students the topic of ‘Order of Operations’. The focus was to improve students’ achievement with the use of comics as a tool to enhance the learning process and at the same time develop students’ interest in learning mathematics. A total of 33 Year 7 students from one of the secondary schools in Brunei Darussalam were involved in this study. Using an action research as the design research approach, two sets of comics relating to the concept of Order of Operations were used to teach students during the intervention lessons. A pre-test was given prior to the lessons, and then a post-test after the intervention lessons were completed. The results between the scores of the students’ pre- and post-tests showed improvements in their performance, indicating that the use of comics does help students in a way in learning the topic of the Order of Operations. Throughout the intervention sessions where comics were incorporated, students’ reactions to comics were taken into account through classroom observations as part of the analysing process. A few selected students were interviewed to give their feedbacks and their thoughts on using comics during lessons. While most had positive views towards comics in general with the majority stating that using comics made the lessons fun and interesting, there were also those who found comics not suitable to be used in the educational setting. The overall findings suggested that using comics have the potential to be used as a tool for teachers to facilitate their students’ learning.
Captivating elementary school students’ interests in solving mathematics word problems with the use of comics
Authors: Batrisyia I , Shahrill M , Azamain M S , Musa N K H
Published: March 2020

This study explores the use of comics in teaching elementary school students on solving Mathematics Word Problems. A total of 12 Year 2 students from an elementary school in Brunei Darussalam were chosen to participate in the study. A series of comics were created and some exercises included characters that were adapted from a local popular culture for utilization in teaching the students in order to engage their learning. The method chosen to conduct the research is of mix method adapted through usage of the action research model. A pre-test was conducted before the lesson intervention to assess the students’ prior knowledge of the content on the terms used in mathematics word problems. Subsequently a post-test was administered right after the intervention lessons were completed in order to discern if there were any significant improvements. Based on a classroom observation that was video recorded when the intervention was carried out, the children were highly motivated and very much interested in the content of the comics. Furthermore, the findings from the interviews revealed two major themes, which are ‘Enjoyment’ that detailed the students enjoying and had fun with the usage of the comics in the classroom, whereas ‘Interest’ tied in with the students’ enjoyment that resulted from their interest in the comic books. It is recommended that educators use comics in classroom due to its potential, especially in mathematics, where certain concepts can be quite challenging for some students to grasp.
Example-engagement-motivation (E2M): Designing an early literacy learning model for elementary school
Authors: Maulani S , Musthafa B , Agustin M
Published: March 2020

This study aims to design a model that is really needed by teachers in schools by taking four major steps. First, through the latest theoretical studies, we identified at least six models specifically developed by experts for the purpose of facilitating elementary school children in learning literacy. Second, those six models are then contrasted to see which main components are included in each model studied. Third, from the steps of comparing and contrasting of these learning models, a small number of mandatory components will be determined which basically represent three things: the role of the teacher, the task of the child, the support provided by the teacher. Fourth, the researchers made a prototype of a literacy learning model that is potentially suitable for elementary school students in early grades. This research is design-based research. The result of this research—in the form of the acronym of E2M-- will be provide wide space for teachers of elementary schools to facilitate children’s literacy development and fulfill children’s needs for their literacy learning.
Development and validation of a test instrument to measure pre-service mathematics teachers’ content knowledge and pedagogical content knowledge
Authors: Dwi Kristanto Yosep , Hariwangsa Panuluh Albertus , Dian Atmajati Elisabeth
Published: March 2020

Teacher education in Indonesia aims to prepare pre-service teachers in becoming professional teaching personnel. Two important knowledge need to be acquired are content knowledge (CK) and pedagogical content knowledge (PCK). However, it is still a challenge to measure the pre-service mathematics teachers’ CK and PCK. Therefore, the first aim of the present study is to develop and validate a test instrument to measure CK and PCK of pre-service mathematics teachers on high school level mathematics. Second, the present study aims to measure the CK and PCK of pre-service mathematics teachers by using the developed instrument. The present study employed developmental research method and used students’ empirical data in investigating the validity, objectivity, and reliability of the instrument. The results of the study and its implications for future research and practice then will be presented in the paper.
Initial design of blended learning for mathematics subject using the Kelase platform by adopting content of Tri Kaya Parisudha
Authors: Ariawan I P W , Divayana D G H , Suyasa P W A
Published: March 2020

Currently, e-learning is suitable to be used as one of the learning models in Mathematics subject on High School or Vocational School level as an impact of the presence of the 4.0 industrial revolution. However, this e-learning model is not always effective to be used to obtain quality learning outcomes because it can only be used to measure cognitive domains. To obtain learning outcomes in the cognitive, affective, and psychomotor domains, so another learning model innovation is needed. One model that can be used is blended learning for Mathematics subject using the Kelase platform with material content that is packaged based on the Tri Kaya Parisudha concept. The Kelase platform is used to create blended learning facilities that contain features needed to accommodate material content. The Tri Kaya Parisudha concept, which consists of manacika, wacika, and kayika, is used as the basic foundation for making material content that can measure cognitive, affective, and psychomotor domains. Based on those statements, the purpose of this study was to find out the general description of the initial design of blended learning for Mathematics subject (especially at the high school or vocational school level) that was created using the Kelase platform with material content based on Tri Kaya Parisudha. The method used in this study was R&D with the Borg and Gall model, which focuses on the stages of design development. The subjects involved in designing this blended learning were three people. The tools used to make blended learning designs, such as Kelase platform and Balsamiq Mockups. The results obtained in this study were the formation of an initial design of blended learning that created used Kelase platform by presenting facilities that could be used to fill Tri Kaya Parisudha-based Mathematics content.
Mathematical critical thinking ability of students grade VII in solving one variable linear equation questions based on their cognitive style
Authors: Salwah  , Ashari N W , Ma’rufi
Published: March 2020

To face the industrial revolution 4.0, the abilities that should be possessed by students are high-level thinking skills that include mathematical critical thinking skills. Critical thinking is the ability to analyze information obtained based on facts in order to make reasonable conclusions. This is a qualitative descriptive study that aimed to determine and illustrate the critical thinking skill of students with filed dependent (FD) and filed independent (FI) cognitive in solving a single variable linear equation problem. Two students selected based on the GEFT test acted as the subjects of this study. One of them had FD cognitive while the other had the FI cognitive. The instruments used in this study were (1) mathematical critical thinking tests, (2) cognitive style tests in the form of GEFT, and (3) interviews. Data analysis techniques in this study consisted of (1) data reduction, (2) data presentation, (3) verification and conclusion. The indicators of students’ mathematical critical thinking skill included (1) reason and (2) clarity. It was found that (1) student with filed dependent style on reason indicator needed to get used to making an argument or reason, while for clarity indicators, FD subject could change statements into mathematical symbols clearly and precisely. (2) Students with cognitive style FI, chose and gave reasons and drew conclusions correctly, changed statements into mathematical symbols clearly and precisely.
The development of constructivism-based student worksheets
Authors: Fajriah Noor , Suryaningsih Yuni
Published: March 2020

This study aims to produce student worksheets based on the constructivism approach in a valid, practical, and effective Real Analysis course. This research method is research development with the Plomp model, which is divided into four phases. The research subjects were students of Mathematics Education at Lambung Mangkurat University who took Real Analysis courses in the short semester of 2016/2017 and the odd semester of 2017/2018. Validity is based on the results of the validator’s assessment of student worksheets and research instruments. Practicality is based on observations of the implementation of student worksheets at all meetings. Effectiveness is based on observations, responses, and completeness of student learning outcomes. The first trial only met the validity and practicality criteria while the effectiveness criteria had not been met because student learning completeness did not meet the specified criteria and the results of the second trial had met valid criteria, practical, and effective. Based on these results, it can be concluded that the student worksheets are appropriate to be used in the real analysis learning process.
Characteristics of mathematics high order thinking skill problems levels
Authors: Ariyanto R O , Mardiyana  , Siswanto
Published: March 2020

There are two levels of thinking skill, namely Low Order Thinking Skill (LOTS) and High Order Thinking Skill (HOTS). Now, many countries believe that HOTS is very important in mathematics education. In Indonesia, the HOTS problems were used in the national exam. The purpose of this study was to construct HOTS problem levels and their characteristics. This research method was literature review. The validity of the results of the study used investigator triangulation involving two experts. For this study, four levels of HOTS were constructed. Each level was combined between the cognitive process dimension of Bloom’s taxonomy revised and cognitive domains of Trends in International Mathematics and Science Study (TIMSS) 2015. This paper also presented problems on each level. The teacher can use the results of this study to train students doing HOTS problems by starting from the lowest level.
The design of literacy environment model in primary school
Authors: Hilman H , Musthafa B , Agustin M
Published: March 2020

This research is motivated by the problem by the lack of a fixed model on how to support learning environment that can be beneficial for the development of literacy skills of primary school students in the early grade. The aim of this study is to create a legitimate basis for the development of environmental design and literacy learning for early childhood and early grade of primary school students. This study discussed the development of a model that would equip teachers with certain important aspects of the literacy environment that are suitable to be applied in primary schools. This study employed Educational Design Research. There were several stages employed in this study: conducting a literature study of the essential environment by reviewing the available models, comparing and contrasting the differences between the models from the learning environment available in the literature, deciding the model components of an essential literacy environment, and trying to create a theoretical model and prototypes. The results of this research suggest that the design of a literacy learning environment model should be used as a guide in developing literacy skills of primary school students in the early grade.
Designing hypothetical learning trajectory in supporting pre-service mathematics teachers to conduct higher-order thinking oriented learning in microteaching course
Authors: Apriani M S , Rianasari V F
Published: March 2020

Many research revealed that teachers or pre-service teachers still misunderstand about higher-order thinking skills (HOTS) and it impacts their ability in designing learning activities that support students’ HOTS. Considering this fact, this research aims to design a teaching and learning trajectory that can support pre-service mathematics teachers to conduct higher-order thinking oriented learning in a microteaching course. This research used design research method as an appropriate means to achieve the research aim. This article presents a hypothetical learning trajectory in microteaching course aiming to support pre-service mathematics teachers to conduct higher-order thinking oriented learning.
Design division mixed fractions materials using PMRI and lesson study
Authors: Mahardika Dinda , Putri R I I
Published: March 2020

One of the problem in modern mathematical learning prosess is the mathematics concept presented by the teacher to students such as machines. So, the concepts are used by students as finished product without knowing the origin and how to reconstruct them. The effort that can be done by the teacher to overcome this problem by designing learning wherever possible starting with presenting realistic problems to drive and support students understanding abstract idea in mathematics. In this article we will discuss the design mixed fraction division based on PMRI, which is a type of design research. Design research has three cycles, namely preliminary design, classroom experiment, and retrospective analysis. This Design is aimed for supporting students understanding the concept division mixed fraction then use it into problem solving. In this article only the preliminary study phase will be discussed, which includes literature study activities, curriculum analysis, and the design of the initial prototype based on non-formal trials conducted at the SMP Srijaya Negara Palembang. An HLT (Hypotetical Learning Trajectory) has been produced regarding division of mixed fraction using image representation. This material not only designed using PMRI but also Lesson Study as learning system. So the design contain three activities, which are two activities about sharing task and one activity about jumping task.
Preparedness of [K-12] teachers for the implementation of the senior high curriculum in a selected Philippine private school
Authors: Migallos K M , Cabahug R G , OSA  , Hipol A I
Published: March 2020

The study investigates the preparedness of teachers at a private school for the implementation of the K-12 Senior High School curriculum. To know this, inquiries were made to determine whether the teachers considered themselves ready for the new curriculum and whether they actually possess the eligibilities and competencies required to satisfy the criteria for prepared teachers. Investigations were also conducted to identify the supports that the school provides which the teachers recognize as contributory to their preparedness for the implementation of the new curriculum. Results of the study show that teacher perceptions of preparedness are integral to the success of curriculum implementation.
Learning pythagorean theorem from ancient China: A preliminary study
Authors: Fachrudin A D , Ekawati R , Kohar A W , Widadah S , Kusumawati I B , Setianingsih R
Published: March 2020

In this article, we explore how History of the Pythagorean theorem, especially from ancient China, as a source of inspiration for learning design. Based on historical examples and problem solving from the history of mathematics, we try to arrange instructional tasks for seventh-grade secondary education students and how its role in supporting students’ understanding of Pythagorean theorem. We focus on explaining the preliminary studies or the first phase of the three main phases in design research. The basic idea of instructional design is to introduce historical geometric diagrams and solve the right triangle problem in the manner of Liu Hui (3rd century CE). The purpose of introducing geometric diagrams is to connect students’ symbolic algebraic thinking with visual thinking about geometric shapes especially in the case of right triangles. In this study, we also conducted interviews and debrief sessions with teachers and tested the student’s history-based tasks to several students for initial investigation in the matter of developing the Hypothetical Learning Trajectory. Results of this study show that teachers have a positive response toward the history-based instructional task developed. On the other hand, we find the resolution of Right Triangles problems with diagrams by the students involving three steps: translation, transformation, and diagrammatic reasoning.
Learning activities using worksheet characterized by the recognition of mathematical symbols
Authors: Zukhrufurrohmah  , Rizky Utami Putri Octavina
Published: March 2020

One of the purposes of learning mathematics in college is to improve the ability of critical thinking and problem-solving. Before solving the problems, the college students need to recognize the problems not excepted the mathematics symbols written in the problem. Thereover it is important for the problem solver to aware and recognizes the meaning of mathematics symbols, called recognition of mathematical symbols. This educational design research aims to describe the development of learning activities using a worksheet to recognize the mathematical symbol. The design research phase consists of four successive phases: knowledge, designing, experimenting and analyzing. Findings reveal that: College students can distinguish between the form of functions and the value of functions; College students transform

∂
f
(
x
,
y
)

∂
y

to fy
(x, y) when solving problems; College students can read

∂
2

z

∂
2

x

symbol but need more time to interpret that symbol rather than fxx
(x, y) symbol. At the end of the learning practice, college students that doing error to recognize mathematics symbols are less than at the first teaching practice. The college students can recognize mathematical symbols well and then solve the problem correctly using correct mathematics symbols.
Mathematical modeling learning design using Model-Eliciting Activities (MEAs) approach to two variable linear equation system material
Authors: Pitriana N , Darmawijoyo  , Susanti E
Published: March 2020

This study aims to produce a trajectory of mathematics modeling learning with the context of Malnutrition in Indonesia using Model-Eliciting Activities (MEAs) approach in the of two-variable linear equation system material. In mathematics modeling classes, students learn to solve real problems using mathematical procedures and concepts. The method used is a study validation type research design that aims to prove learning theories. This research design consists of three stages; preliminary design, teaching experimentation, and retrospective analysis. The subjects of the study are Grade VII students of Public JHS 21 Palembang. Data collection techniques used are video recording, interviews, and documentation. Data were analyzed by comparing Hypothetical Learning Trajectory (HLT) and what happened during the learning process. This research produces a learning path of mathematical modeling using Model-Eliciting Activities (MEAs) approach with the context of Malnutrition in Indonesia in the two-variable linear equation system material. The results of this study indicate that through a series of mathematical modeling activities using Model-Eliciting Activities (MEAs) approach can help students in understanding two-variable linear equation system material.
Students’ logical mathematical intelligence in completing mathematical problems with natural disaster context
Authors: Fatimah S , Johar R , Zubainur C M
Published: March 2020

Disaster awareness in the community is necessary to be improved continuously, especially for regions in Indonesia that are prone to natural disasters. One way to do is to integrate disaster problems in mathematics learning. Teachers need to train students to solve mathematical problems in the context of disaster. Through this problem, it is expected that students’ logical mathematical intelligence will increase. This research is a preliminary study to determine the logical mathematical intelligence of students in solving mathematical problems in the context of disaster. The participants in this study were all 23 junior high school students in class VII at SMPN 1 Peukan Bada, Aceh Besar. These students were domiciled in the 2004 tsunami-affected areas registered and members of the Disaster Preparedness Schools (SSB). The data in this study were collected through tests and interviews which were analyzed descriptively. Based on the indicators of logical mathematical intelligence, it was concluded that students’ logical mathematical abilities in solving mathematical problems in the context of disaster were in the low category, even though students in these schools already had knowledge of disaster through disaster simulation activities. Thus the mathematical learning design is needed to improve students’ logical mathematical intelligence in solving mathematical problems in the context of disaster.
The prototype of PISA-like digital mathematical tasks
Authors: Meryansumayeka  , Zulkardi  , Putri R I I , Hiltrimartin C
Published: March 2020

This article describes a part of study aimed to develop digital mathematical tasks like PISA which are valid, practice, and having potential effect to secondary students’ 21th century competencies. The discussion of this article is limited to the description of the first prototype of PISA-like digital mathematical tasks. Design research type development study is chosen as research methodology in this study that consisted of three stages namely preliminary stage, prototyping stage, and evaluation stage. Data were gathered using printed documents such as curriculum document, PISA framework, and PISA problems and digital documents including mathematical tasks in the form of digital video. The first prototype was produced after experiencing changes in the choice of context, content, mathematical process, and conformity with the level of the PISA problem.
Developing teachers’ PCK about STEM teaching approach through the implementation of design research
Authors: Sarkim Tarsisius
Published: March 2020

Since the introduction by Shulman in the early 1980s, Pedagogical Content Knowledge (PCK) has been identified as a key teachers’ knowledge that influence teachers’ classroom activity. The identification of this particular type of knowledge developed awareness that the improvement of teachers’ competencies should take the teachers’ PCK into account. If the teachers’ classroom activities need to be improved, the professional development programs should also aware of the teachers’ knowledge and beliefs related to their daily classroom practices. This research was aiming at developing a teacher professional development model with the development of PCK as a main improvement indicator. The research implemented Design Research method. The participants of the research were science teachers and mathematics teachers of Junior High School in Yogyakarta participating in the STEM approach project. The data collected during the processes of preparation, implementation, and evaluation-reflection of the implementation of STEM approach through interviews, focus discussion group, and questionnaires. The research resulted a model of teachers’ professional development program that focuses not only on the teachers competencies but also the teachers’ knowledge that drive their activities in the classroom. One of the main features of the model is on its time allocation dedicated for teachers to be aware of their value and knowledge system and to reflect on the extent to which their value and knowledge system influence their teaching practices.
Analysis of problem solving ability of eight grade students of Santo Aloysius Sleman junior high school in mathematical learning using problem pased learning approach to inner tangent between the two circles material
Authors: Maran J P , Renggi A S J
Published: March 2020

This study aims to describe the steps of the learning process by using Problem Based Learning (PBL) approach and students’ problem solving ability on inner tangent between the two circles material after experiencing the learning process using PBL approach. The type of research used is design research. The subjects of the research were eighth grade students of Santo Aloysius Sleman junior high school. The object of the research was problem solving ability of eighth grade students of Santo Aloysius Sleman junior high school using PBL approach. The stages carried out in the study were the prior design, trial, and implementation of learning. Data analysis techniques of the research are data reduction, data presentation and conclusions or verification. In this study the researchers designed and developed the Hypothetical Learning Trajectory (HLT) with the PBL approach to inner tangent between the two circles material as the learning model. Researchers designed and developed Hypothetical Learning Trajectory (HLT) with Problem Based Learning (PBL) approach for tangent line to two circles as the learning model. HLT is made, implemented in learning to describe the steps of the learning process and analyze students’ problem solving ability. The steps of the research were as follow: orient the students through inner tangent between the two circles; organize the students to learn; guide the individual’s or groups’ experience towards the learning process; develop and present the students’ work from group discussions; and conclude the results of the learning process that have been done. From the result of tests and interviews, the researchers found that all students experienced the five indicators of problem solving ability based on NCTM.
Developing learning trajectories with the RME of phytagorean theorem
Authors: Towe M M , Julie H
Published: March 2020

There are three main parts of the hypothetical learning trajectory (HLT), are (1) learning objectives, (2) learning activities, (3) student understanding and problem solving strategies. The researcher tried to develop a context that helped students in finding the concept of the pythagorean theorem using the RME approach. In this study, the type of research used by researchers was design research developed by Gravemeijer and Cobb. There are three phases in design research according to Gravemeijer and Cobb, namely preliminary design, experimental design, and retrospective analysis. In this paper, researchers describe limited to the first phase of design research.
The effect of integrated science learning based on local wisdom to increase the students competency
Authors: Usmeldi  , Amini Risda
Published: March 2020

The national education prioritizes the character building, religion, culture and the demands of the era in the 21st century. Local wisdom is very appropriate to build the student character which is a nurturant effect in the learning process in school. Understanding of local wisdom as one of the elements integrated into learning at school. Science learning in Junior High School based on the 2013 curriculum is presented in an integrated with themes related to the subject matter of Physics, Chemistry, Biology and Earth and Space Sciences. The observation results show that science learning in schools has not been presented in an integrated and has not yet integrated local wisdom. To integrate local wisdom requires an appropriate learning model. One learning model that can be used is an integrated learning model. Through integrated learning the students were provided with more comprehensive knowledge, so that students easily master science learning material. To implement an integrated learning model, teaching materials are needed in the form of lesson plan, student activity sheet, student book, and assessment. Therefore, integrated science learning based on local wisdom is implemented. The aim of this research is to know the effect of integrated science learning based on local wisdom on student competency. This research used quasi experiment method with pre-test post-test group control design. The research subjects of seventh grade in Junior High School in Padang, Indonesia. The data were collected use interview guide, observation sheet and learning outcome tests. The result shows that the effect of integrated science learning based on local wisdom to improving the student competencies include large category for knowledge domain and medium category for affective domain.
Local wisdom value’s-based literacy education learning model in elementary school
Authors: Lyesmaya D , Musthafa B , Sunendar D
Published: March 2020

The lack of a model for promoting productive learning environments and a clear major value of choice to guide practice has resulted in the needs for this research. Values are important aspects of learning, yet they are not used to their fullest potential in educational practices in Indonesia. The primary objective for this study was to propose an appropriate model with application of local wisdom value in elementary school, and synthesized strategies for challenging the value for sustainable use in schools. This paper discusses and describe possible guidelines targeting the design of learning local wisdom value’s-based learning model with creative learning environments that influence student literacy skills. This research was an Educational Design Research. To develop the local wisdom value’s-based learning model we need, the following five steps will be taken 1) putting several available models side by side (literature research), 2) comparing and contrasting the models (plenary study), 3) deciding most essential model components (ethnography analysing), 4) creating theoretical model and prototype (setting by Focus Group Discussion/FGD), 5) testing the prototype models with limited empirical verification sample (setting by workshop). At present, this research has been in the stage of compiling a prototype of the local wisdom value’s-based literacy learning model. The next stage will be consolidated through a workshop. The outcomes of the focus group interview and future workshop activities will be synthesized into five design guidelines providing orientation for the design of a local wisdom value’s-based literacy learning model. The results of this research recommend that the learning with the local wisdom value can be used as an approach to learning literacy. The model also promotes a positive classroom climate, a community of learners, developing learner responsibility, and maximizing opportunities for learning.
Analysis of grade VII students’ learning outcomes for animals classification and sets by using the STEM approach
Authors: Utami S , Roostika M , Setiawan I N , Julie H , Panuluh A H
Published: March 2020

With the global economic system emerging in the 21st century, learning in the fields of science, technology, engineering, and mathematics (STEM) has gained a very important role in increasing the role of a country in the global economy. Therefore, learning in all four fields is focused on the emergence of innovative solutions to a complex contextual problem facing the world today. The purpose of this study was to describe the learning outcomes achieved by students for animal classification in science and set in mathematics after students experienced the learning process with the STEM approach. The Gravemeijer and Cobb design research model used in this study. The research subjects in this study were 34 students of class VII D of SMPN 1 Yogyakarta. The instrument used in this study was a test. In the learning process, to help students understand how the process of classifying animals in science, and how to make sets, determine membership requirements from a set, and write down membership from a set, students were invited to make observations about animal characteristics and animal placement in the Gembiraloka zoo. 65.63% of students could define the meaning of a set, make a set along with the terms of membership, and write down the membership of a set.
The ability of the civil engineering students to represent partial derivative symbols as metonymy and metaphor
Authors: Rizky Utami Putri Octavina , Zukhrufurrohmah
Published: March 2020

Symbolic representation is a form of one’s ideas interpretation to ease the problem-solving. The representation of symbols is an important thing in mathematical learning because it reflects the definition of a concept. Symbolic representation involves metonymy as the symbol scheme and metaphor as the denotation of the symbol. Metonymy and metaphor are related to each other and are involved in a symbolization system to discover new symbols in mathematics. The Civil Engineering students have to deal with a number of new symbols in Calculus II, such as the symbol of a function of two or more variables and its derivative. This symbol, needless to say, is nothing like the symbol of a function of one variable and its derivative which the students had learned in Calculus I offered in the previous semester. This study aimed to describe the ability of the Civil Engineering students to represent symbols as metonymy and metaphor through partial derivative problem-solving. This study was designed as a case study to detect the difficulties faced by the students in solving partial derivative problems. The students were provided with a worksheet containing partial derivative problems which focused on symbolic representation as metonymy and metaphor. The students’ answers were analyzed based on how they denoted the partial derivative, both from the notation and the definition of the notation. Interview and observation were conducted to support worksheet findings. The results showed that the students had a poor ability in representing the partial derivative symbol of f with respect to x and y. The students’ analogy was that the derivative symbol can be expressed with the d and prime notations such as in the derivative of functions of one variable. Therefore, this symbol was used in the partial derivative. The students were able to provide a correct solution to the partial derivative problems, but less careful in determining the partial derivative symbol. The error in using the partial derivative symbol was not noticed by the students because they focused more on the problem-solving procedure rather than the symbolization.
Development of data presentation instructional material based on local wisdom for preservice teachers
Authors: Lutfianto M , Syarifuddin A , Suhartono  , Atok M
Published: March 2020

Local wisdom like Surabaya Zoo, Semanggi, and Maulud Nabi has pedagogical value because it aims to regulate behavior that is beneficial to the common interests of the community. Thus, this research aims to develop teaching materials of data presentation using local wisdom for preservice teachers. The feasibility of teaching materials was evaluated based on their validity and practicality. The design of this research was four-D-model, consist of Define, Design, Develop, and Disseminate. The data of this research was analyzed by quantitative descriptive. The results of this research were as follows: (1) The teaching materials that were developed consist of lesson plan, worksheets, power point media, and assessment; (2) The instructional materials developed were valid and practical and have scored 3.1 and 3.34 respectively. The category of validity in content, construct, language, and contain principles of local wisdom; (3) The lecturer implemented the lesson plan well, the increased of preservice teachers’ activities were indicated through investigation, investigation result analysis and presentation of final product. Based on the results of the research, the teaching materials of data presentation empowers preservice teachers’ skills in data presentation using local wisdom context.
The development of the pictorial stories about solar panels for elementary schools
Authors: Limiansih K , Fauziana U A
Published: March 2020

The main objective of this research was to produce a prototype of a pictorial story with the topic “Processing Solar Thermal Energy into Electric Energy”. This product could be used as a supplementary book for Grade IV of Elementary Schools. This product was made based on the limitations of the material in the 2013 Curriculum student book and the needs in the classroom. Research & Development (R & D) method was applied in this research, with six stages: (1) Potential and problem analysis, (2) Data collection, (3) Product Design, (4) Product validation, (5) Product Design Improvement, (6) Product Design Testing. The data gathering technique applied interviews, observations, and questionnaires. The product was approved by two validators with the average score of 3.16 (from a range of values 1-4); and was included in “good” category; so, it was worth testing in a student learning activity, after being revised. After implementing in 4th grade elementary school students, the product obtained an average score of 3.58 which was included in “very good” category. As the result, the prototype was worth to be implemented as a learning medium which was also a means of literacy in supporting the “Gerakan Literasi Sekolah” (school literacy movement).