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Yusuf Hartono

Universitas Sriwijaya

Author-ID : 2999016

Religion Arts Humanities Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Mathematics Medicine & Pharmacology Nursing Public Health Social Sciences Other

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DEVELOPING OPEN-ENDED QUESTIONS FOR SURFACE AREA AND VOLUME OF BEAM Henry Kurniawan; Ratu Ilma Indra Putri; Yusuf Hartono
Journal on Mathematics Education Vol 9, No 1 (2018)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.9.1.4640.157-168

The purpose of this research was to show open-ended questions about surface area and beam volume which valid and practice, have potential effect. This research is research development which consists of two main phases: preliminary phase (preparation phase and problem design) and formative evaluation phase (evaluation and revision phases). The objective of the study is the students of VIII.2 class of Junior High School 55 Palembang. The result of the study got 9 questions open-ended of surface area and beam volume materials which valid and practical. In addition, there was the potential effect of students' mathematical ability on the open-ended questions that have been given. The result of open-ended problem in the concept potential effect was 77,53%, reasoning ability was 59,79%, the communication ability was 57,02%, and problem solving ability was 67,01 %.DOI: http://dx.doi.org/10.22342/jme.9.1.4640.157-168

KEMAJUAN BELAJAR SISWA PADA GEOMETRI TRANSFORMASI MENGGUNAKAN AKTIVITAS REFLEKSI GEOMETRI Irkham Ulil Albab; Yusuf Hartono; Darmawijoyo Darmawijoyo
Jurnal Cakrawala Pendidikan CAKRAWALA PENDIDIKAN OKTOBER 2014, TH. XXXIII, NO. 3
Publisher : LPMPP Universitas Negeri Yogyakarta

Abstrak: Penelitian ini bertujuan untuk mendeskripsikan kemajuan belajar siswa pada materi geometri transformasi yang didukung dengan serangkaian aktivitas belajar berdasarkan Pendidikan Matematika Realistik Indonesia. Penelitian didesain melalui tiga tahap, yaitu tahapan perancangan desain awal, pengujian desain melalui pembelajaran awal dan pembelajaran eksperimental, dan tahap analisis retrospektif. Dalam penelitian ini, Hypothetical Learning Trajectory, HLT (HLT) berperan penting sebagai desain pembelajaran sekaligus instrumen penelitian. HLT diujikan terhadap 26 siswa kelas VII. Data dikumpulkan dengan teknik wawancara, pengamatan, dan catatan lapangan. Hasil penelitian menunjukkan bahwa desain pembelajaran ini mampu menstimulasi siswa untuk memberikan karakteristik refleksi dan transformasi geometri lainnya secara informal, mengklasifikasikannya dalam transformasi isometri pada level kedua, dan menemukan garis bantuan refleksi pada level yang lebih formal. Selain itu, garis bantuan refleksi digunakan oleh siswa untuk menggambar bayangan refleksi dan pola pencerminan serta memahami bentuk rotasi dan translasi sebagai kombinasi refleksi adalah level tertinggi. Keyword: transformasi geometri, kombinasi refleksi, rotasi, translasi, design research,HLT STUDENTS’ LEARNING PROGRESS ON TRANSFORMATION GEOMETRY USING THE GEOMETRY REFLECTION ACTIVITIES Abstract: This study was aimed at describing the students’ learning progress on transformation geometry supported by a set of learning activities based on Indonesian Realistic Mathematics Education. The study was designed into three stages, that is, the preliminary design stage, the design testing through initial instruction and experiment, and the restrospective analysis stage. In this study, Hypothetical Learning Trajectory (HLT) played an important role as an instructional design and a research instrument. HLT was tested to 26 seventh grade students. The data were collected through interviews, observations, and field notes. The findings of the study showed that this instructional design could stimulate students to provide reflection characteristics and other transformation geometry informally, to classify them in the transformation isometry in the second level, and to find the reflection supporting line in the more formal level. In addition, the reflection supporting line was used by the students to draw the reflection image and the mirroring pattern and to understand the rotation and translation shapes as a combination of reflection at the highest level. Keyword: geometric transformation, rotation, translation, and HLT

DEVELOPING OPEN-ENDED QUESTIONS FOR SURFACE AREA AND VOLUME OF BEAM Kurniawan, Henry; Putri, Ratu Ilma Indra; Hartono, Yusuf
Journal on Mathematics Education Vol 9, No 1 (2018)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.9.1.4640.157-168

AQUATIC IN ASIAN GAMES: CONTEXT OF PISA-LIKE MATHEMATICS PROBLEM Maharani, Levana; Putri, Ratu Ilma Indra; Hartono, Yusuf
Journal on Mathematics Education Vol 10, No 3 (2019)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

This study aimed to create mathematical problems of uncertainty and data contents in PISA using aquatic context that were valid, practical and had the potential effect. This study was design research of development study. The subjects in this study were 10th-grade students of Indo Global Mandiri senior high school in Palembang consisting of 20 students. Data were gathered through interviews, observation, and tests. The results of data analysis showed that there were eight valid and practical items of PISA type of uncertainty and data contents. The contents obtained using bicycles and aquatic contexts in Asian Games. The 11 out of 20 students showed reasoning skills and reasonable arguments, and 9 out of 20 students showed reasoning skills and discussions but incomplete. It was because they were not used to solving PISA type problems in learning.

Learning Materials Design Pattern Numbers Context Making Kemplang in Class IX Eryandi, Yayan; Somakim, Somakim; Hartono, Yusuf
Journal on Mathematics Education Vol 7, No 2 (2016)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

This study aims to clarify the role of making kemplang can help students understand the concept of number patterns, and generate Learning Trajectory. The methodology used in this research is the design of the research by the research subject class IX students of SMP Negeri 2 South Indralaya, Ogan Ilir, South Sumatra. Researchers designing learning activities that sensing, drafting kemplang class simulated using circular paper prepared by the researcher. Exploration proportional situations using everyday life issues are close to students' lives, such as creating kemplang can make students more interested in learning mathematics and easily understand the math problems are given. Collecting data in this study using video, observation, written tests, documentation and records during the activity. The results of this study indicate that context kemplang and paper-making circles as a model really helps students to understand the concept of a pattern of numbers.Keywords: pattern numbers, manufacture Kemplang, PMRI, design researchÃ‚Â DOI: http://dx.doi.org/10.22342/jme.7.2.3535.101-108

UNFINISHED STUDENT ANSWER IN PISA MATHEMATICS CONTEXTUAL PROBLEM Lutfianto, Moch.; Zulkardi, Zulkardi; Hartono, Yusuf
Journal on Mathematics Education Vol 4, No 2 (2013)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.4.2.552.188-193

Solving mathematics contextual problems is one way that can be used to enable students to have the skills needed to live in the 21st century. Completion contextual problem requires a series of steps in order to properly answer the questions that are asked. The purpose of this study was to determine the steps performed students in solving contextual mathematics problem. The results showed that 75% students can not solve contextual mathematics problems precisely (unfinished). Students stop and feel that it was completed when they are able to solve problems mathematically, but mathematical solution has not answered the requested context.

Students' Strategies of Measuring Time Using Traditional Gasing Game in Third Grade of Primary School Jaelani, Anton; Putri, Ratu Ilma Indra; Hartono, Yusuf
Journal on Mathematics Education Vol 4, No 1 (2013)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.4.1.560.29-40

Understanding of measuring time has difficulty for children because it is intangible. Standar unitsÂ often use directly by teacher for learning time measurement. Many researches involved game in designing learning material to facilitate fun and meaningful learning for children. For this reason,Â learning of time measurement that connect with children's daily experience was designed. The context of this research was traditional gasing game. The study is situated in implementation of Indonesian version of Realistic Mathematics Education,Â labeled as PMRI. This research aimed acquire learning trajectory of time measurement using traditional gasing game for the third grader of primary school by describing students' progress in learning.Â Design research methodology comprising preparing for the experiment, teaching experiment, and retrospective analysis was used. The research was conducted in SD (Sekolah Dasar) Pusri (Pupuk Sriwijaya) Palembang as one of PMRI (Pendidikan Matematika Realistik Indonesia) school. The result of the teaching experiment showed that learning design could foster students to experience reinvention of time measurement historically. It stimulated students to emerge their sense of time, measure time using non standar unit, understand the concept of standard unit, and measure time using standar unit. Students' strategies that were emerged showed students' progress through situation and problems that were provided by traditional gasing game.

Investigating Secondary School Students' Difficulties in Modeling Problems PISA-Model Level 5 And 6 Edo, Sri Imelda; Putri, Ratu Ilma Indra; Hartono, Yusuf
Journal on Mathematics Education Vol 4, No 1 (2013)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.4.1.561.41-58

The chart of Indonesian student of mathematical ability development in Program for International Student Assessment (PISA) event during the last 4 periods shows an unstable movement. PISA aims to examine the ability of children aged 15 years in reading literacy, mathematics literacy, and science literacy. The concept of mathematical literacy is closely related to several other concepts discussed in mathematics education. The most important is mathematical modelling and its component processes. Therefore the goal of this research is to investigate secondary school students' difficulties in modeling problems PISA-model level 5 and 6. Qualitative research was used as an appropriate mean to achieve this research goal. This type of research is a greater emphasizing on holistic description, and phenomenon identified to be studied, students' difficulties in modelling real world problem in PISA model question level 5 and 6. 26 grade 9 students of SMPN 1Palembang, 26 grade 9 students of SMPK Frater Xaverius 1 Palembang, and 31 participants of mathematical literacy context event, were involved in this research. The result of investigate showed that student is difficult to; (1) formulating situations mathematically, Such as to representing a situation mathematically, recognizing mathematical structure (including regularities, relationships, and patterns) in problems, (2) evaluating the reasonableness of a mathematical solution in the context of a real-world problem. The students have no problem inÃ‚Â solve mathematical problem they have constructed.

Exploring Primary Student's Problem-Solving Ability by Doing Tasks Like PISA's Question Novita, Rita; Zulkardi, Zulkardi; Hartono, Yusuf
Journal on Mathematics Education Vol 3, No 2 (2012)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.3.2.571.133-150

Problem solving plays an important role in mathematics and should have a prominent role in the mathematics education. The term problem solving refers to mathematics tasks that have the potential to provide intellectual challenges for enhancing students' mathematical understanding and development. In addition, the contextual problem that requires students to connect their mathematical knowledge in solving mathematical situational problem is believed to be an impact on the development students' problem-solving ability. The tasks that have been developed by PISA meet both of these criteria. As stated by the NCTM, that problem-solving skill and ability should be developed to students when they were in primary school (K5-8), therefore, it is important to do an effort to guide students in developing problem-solving ability from primary school such as accustom students to do some mathematical solving-problem tasks. Thus, in this research we tried to investigate how to develop mathematical problem-solving tasks like PISA's question that have potential effect toward students' mathematical problem-solving abilities?. We used a formative evaluation type of development research as an meanÂ to achieve this research goal. This type of research is conducted in two steps, namely preliminary stage and formative evaluation stage covering self evaluation, prototyping (expert reviews, one-to-one, and small group), and field test. This research involve four primary schools in Palembang, there are SD Muhammadiyah 6 Palembang, MIN 1 & MIN 2 Palembang, and SDN 179 Palembang. The result of this research showed that the mathematical problem-solving tasks that have been developed have potential effect in exploring mathematical problem-solving ability of the primary school students. It is shown from their work in solving problem where all of the indicators of problem solving competency have emerged quite well category. In addition, based on interview result from some students, known that they like to do such tasks because can improve their reasoning, creativity and thinking ability.

Learning Multiplication Using Indonesian Traditional game in Third Grade Prahmana, Rully Charitas Indra; Zulkardi, Zulkakrdi; Hartono, Yusuf
Journal on Mathematics Education (JME) Vol 3, No 02 (2012): Journal on Mathematics Education (JME)
Publisher : IndoMS Pusat

Show Abstract | Download Original | Original Source | Check in Google Scholar

Several previous researches showed that students had difficulty in understanding the basic concept of multiplication.Â Students are more likely to be introduced by using formula without involving the concept itself. This underlies the researcher to design a learning trajectory of learning multiplication using Permainan Tradisional Tepuk Bergambar (PT2B) as a context based on the student experience. The purpose of this research is to look at the role of PT2B in helping students understanding in learning multiplication, which evolved from the informal to formal level in third grade with Pendidikan Matematika Realistik Indonesia (PMRI) approach. The method used is design research starting from preliminary design, teaching experiments, and retrospective analysis. This research describes how PT2B make a real contribution to the third grade students of SDN 179 Palembang to understand the concept of multiplication. The results showed PT2B context can stimulate students to understand theirÂ knowledge of the multiplication concept. The whole strategy and model that students discover, describe, and discuss shows how the students construction or contribution can uses to help their initial understanding of that concept. The stages in the learning trajectory of student have an important role in understanding the concept of the operation number from informal to the formal level. Â Keyword: Design Research, PMRI, Multiplication, Permainan Tradisional Tepuk Bergambar

Co-Authors A. Jariah, Novika Andriani A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri admin pythagoras, admin Akhmad Sumbandari Amrina Rizta Annisa Oktavia Lestari Anton Jaelani Anton Jaelani Arden Naser Yustian Simarmata Ardina Mayasari Azka 'Afifah Bambang Suprihatin Barbara van Amerom Bella Juwita Rezky Budi Santoso Cecil Hiltrimartin Cecil Hiltrimartin Cecil Hiltrimartin Darmawijoyo, Darmawijoyo Dede de Haan Desty Rupalestari Diah Dwi Santri Diah Dwi Santri Eka Fitri Puspa Sari, Eka Fitri Puspa Elis Sulastri Ely Susanti Etika Prasetyani Etika Prasetyani, Etika Evi Yuliza, Evi Fanni Fatoni, cakrawala Feli Ramury Firdaus Firdaus Fitri Maya Puspita Frans van Galen Frans van Galen Fridgo Tasman Futri Hikma Fatona Futri Hikma Fatona Hanifah Bunayati Hapizah Hapizah Hapizah Hardian Mei Fajri Henry Kurniawan Henry Kurniawan Hery, Rosmala Dewi Hikmayati, Citra Hiltrimartin, Cecil Imam Adhitya Nugraha Indaryanti Indaryanti Indriati Indriati Irkham Ulil Albab Jaap den Hertog Januar Sitorus, Rico Jeri Araiku Jumroh Jumroh Kesumawati, Nila Kurnia Rahmi Yuberta Kurniadi, Elika Leonardo Jonathan Shinariko Lestari, S R Lestaria N, Yunika Levana Maharani Levana Maharani Liana Septy Listina Tri Dharmayanti Lusiana Lusiana Lusiana Lusiana Maharani, Levana Malalina Malalina Manalu, Michael Amin Marini Fitriani Maya Saftari Meilani Safitri Meilani Safitri MEILANI SAFITRI - UNIVERSITAS SRIWIJAYA Melinda Chusnul Chotima Meryansumayeka Meryansumayeka Mewa Zabeta, Mewa Michael Amin Manalu Moch. Lutfianto Moch. Lutfianto Nadia Zuliaty Syaputri Nadia Zuliaty Syaputri Nenden Octavarulia Shanty Nenden Octavarulia Shanty Neny Lestari Nessa, Widya Nety Wahyu Saputri Nizarwati Nizarwati Nora Surmilasari Noviafitri, Selly Novika Andriani A. Jariah Novita Sari Nursa Fatri Nofriati Nyimas Aisyah Nyimas Aisyah Ogi Meita Utami - PANDI PUTRA TIHURI Prattiwi, Rika Puji Astuti PUJI ASTUTI Puri Pramudiani Purwoko Purwoko Purwoko Purwoko Purwoko Purwoko PUTERI APRILIANTI Putri Ratu Ilma Indra Rahayu, Chika Rahma Siska Utari Ratu Ilma Ratu Ilma Indra Putri Renny Sendra Wahyuni Reny Shinta Sari Reny Wahyuni Rika Firma Yenni, Rika Firma Risnina Wafiqoh Rita Novita Rita Novita Rohana Rohana ROHANA ROHANA Rosmalia Septiana Rully Charitas Indra Prahmana Rupalestari, Desty Sanjaya, Dekky Sanova, Yanna Santoso, Budi Scristia, Scristia Selly Noviafitri Sicilia Firaisti Silvia Fitriani Simarmata, Ruth Helen Somakim, Somakim Somakin . Sri Hartati Sri Hartati Sri Imelda Edo Sri Imelda Edo Stefanny Hepta Augustine Suci Ariani Sujinal Arifin Surmilasari, Nora Syutaridho Syutaridho Tati Tati Tito Nurdiyanto Tri Oktaria Trimurti Saleh Trimurti Saleh Umi Puji Lestari Umi Puji Lestari Umi Puji Lestari, Umi Puji Vebrian, Rajab Wafiqoh, Risnina Wahyu Wibowo Wahyuni, Reny Wardani, Ambarsari Kusuma Welly Yanti Weni Dwi Pratiwi Weni Dwi Pratiwi Widya Nessa Winda Wulandari Windria, Hening Wuli Oktiningrum Wuli Oktiningrum, Wuli Yanna Sanova Yanti, Welly Yayan Eryandi Yayan Eryandi, Yayan Yenny Anggreini Sarumaha Yosi Ismawati Yudi Yunika Putra, Yudi Yunika Yulianita Maharani Yulianti Yulisa Aulia Yullys Helsa Yullys Helsa Zeta Ariano Zuli Nuraeni Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi Zulkardi

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