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Keremata Lede, Yulius
Pendidikan Matematika Universitas Katolik Weetebula
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Analisis Kemampuan Komunikasi Matematis pada Materi Persegi dan Persegi Panjang untuk Siswa Zaghu, Lazarus Andrianus Pati; Lede, Yulius Keremata; Kii, Wilhelmus Yape
Varied Knowledge Journal Vol. 1 No. 1: Varied Knowledge Journal, August 2023
Publisher : CT. Rajawali media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71094/vkj.v1i1.9

Abstract

This article examines the level of students' numeracy literacy skills. The reference in testing students' numeracy literacy skills in this study used math questions in the PISA program for students aged 15 years. The ranking of Indonesian students' mathematical literacy from 2009 to 2015 did not show a significant increase. In 2009 Indonesia was ranked 68th out of 74 countries. In 2012 Indonesia ranked 64th out of 65 countries with a relatively low level of achievement. While the results of PISA in 2015 showed that Indonesia's ranking experienced a slight increase, namely 63rd out of 72 countries. The purpose of writing this article is to find out how far the students' numeracy literacy skills are at SMP Negeri 3 Tambolaka City. The method used is a type of sequential explanatory research and a mixed method research approach.
Analisis Kemampuan Berpikir Kreatif Matematis Siswa Pada Materi Program Linear Elkarisme, Yunice; Making, Samuel Rex M.; Lede, Yulius Keremata
Varied Knowledge Journal Vol. 1 No. 2: Varied Knowledge Journal, November 2023
Publisher : CT. Rajawali media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71094/vkj.v1i2.11

Abstract

The purpose of this research was to determine the mathematical creative thinking skills of Class XI Sinar Buana Seminary High School students on Linear Programming material. The method used in this research is descriptive qualitative method. Data analysis techniques in this study are data reduction, data presentation, and drawing conclusions. The results showed that students' mathematical creative thinking abilities were in the Medium category because seen from the level of success and student achievement, Sinar Buana Seminary High School students in solving problems on linear program material the achievement level of students with mathematical creative thinking abilities only a few students achieved indicator success.
Analisis Kesalahan Siswa dalam Menyelesaikan Soal Bilangan Berpangkat dan Bentuk Akar Bota, Mariana Ra; Lede, Yulius Keremata; Making, Samuel R.M.; Patty, Elyakim N.S.; Iriyani, Sri Astuti
Varied Knowledge Journal Vol. 1 No. 4: Varied Knowledge Journal, May 2024
Publisher : CT. Rajawali media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71094/vkj.v1i4.19

Abstract

This study aims to describe students' errors in solving class X problems of power numbers and root forms and analyze the factors that cause students to make mistakes. This type of research is descriptive qualitative. The research subjects were class X students of SMK Kasimo in the 2023/2024 academic year. The data collection methods used in this research are tests, interviews, and documentation. Data analysis techniques through data reduction, data presentation, and conclusion drawing. The results showed that the errors made by students in solving problems of power numbers and root forms: (1) errors in understanding the meaning of the problem; (2) errors in understanding and applying concepts; and (3) errors in calculating. The factors that cause students to make mistakes are students do not understand the meaning of the question asked, students have not mastered the prerequisite material such as: exponent numbers, students do not understand the material, students forget the formula, students lack practice in solving problems about power numbers and root forms, students are less careful in calculating, students do not check the answers that have been done.
Analisis Kemampuan Matematika Siswa SMAS Manda Elu dalam Menyelesaikan Soal pada Materi Perbandingan Trigonometri untuk Siswa Kelas X Lede, Yulius Keremata; Moza, Florida; Zogara, Leonard
Indo-MathEdu Intellectuals Journal Vol. 6 No. 5 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i5.3702

Abstract

The purpose of this study was to determine the Mathematics ability of SMAS Manda Elu Students in solving Problems on Trigonometric Comparison Material for Grade X Students. The research method is a survey method. The subjects of the study were 28 grade X SMAS Manda Elu students and 3 students were selected based on the same answer category to be confirmed through interviews. Data collection techniques in this study were documentation and interviews. The research instrument was a test question taken from the trigonometric comparison material and interview guidelines related to problem-solving skills. This data was analyzed using three types, namely Data Reduction, and making conclusions. Students are not familiar with Polya's steps, none of them write from what is known and asked, let alone looking back because they are not used to it. Students also usually write formulas directly and determine the final result or answer to the question. So the results of this study found that not even 50% of students' ability to solve trigonometric comparison problems through Polya's steps.
Analisis Kesulitan Siswa dalam Menyelesaikan Soal Cerita pada Materi Sistem Persamaan Linear Dua Variabel di SMA ST Alfonsus Weetebula Kalembu, Stefania Sulastri; Lede, Yulius Keremata; Napu, Timotius Woda; Lubur, Dorothea Novia Ludo
Indo-MathEdu Intellectuals Journal Vol. 6 No. 5 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i5.3760

Abstract

The second research aims to identify the types of difficulties and to determine the factors causing student difficulties. The type of research used is qualitative descriptive. This research was conducted at SMPK Flos Karmeli in the second semester of the 2024/2025 academic year with 28 students as the research subjects. The data collection techniques used in this research are written tests, interviews, and documentation. The data analysis technique used is qualitative data analysis with stages of data reduction, data presentation, and drawing conclusions. The research results show that the errors are divided into 3 parts, namely Verbal problem difficulty 44.73%, Conceptual difficulty 69.73%, and principle difficulty 89.47%. (1) Verbal problem difficulty occurs when students are not accurate in translating into a Mathematical model, students are not accurate in using the data that will be used, and students are not accurate in drawing conclusions; (2) Conceptual difficulty occurs when students cannot write down what is known and what is being asked, students are confused in representing the problems, for example, a notebook is represented as X and a pencil is represented as y; and (3) Principle difficulty occurs when students are not accurate in using arithmetic operations, and students do not complete the calculations.
Pengembangan Media Pembelajaran ICT untuk Meningkatkan Kemampuan Pemecahan Masalah Siswa Kelas VII SMPN 2 Wewewa Tengah Tanggu, Daud; Napu, Timotius Woda; Lede, Yulius Keremata; Making, Samuel Rex Mulyadi
Indo-MathEdu Intellectuals Journal Vol. 6 No. 5 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i5.3857

Abstract

The purpose of this study is to improve students' problem-solving abilities related to the concept of fractions by using ICT learning media. This study uses a type of research, namely design research, researchers also use qualitative descriptive analysis to analyze students' problem-solving abilities. The subjects in this study were seventh-grade students at SMP Negeri 2 Wewewa Tengah, in the 2024/2025 academic year and the object of the study was the development of ICT learning media to improve the problem-solving abilities of seventh-grade students of SMP Negeri 2 Wewewa Tengah. The instruments used in this study were learning observations, test questions, interviews. Data collection techniques in this study were by providing test questions, learning observations, interviews, and documentation. Based on the results of the research and data analysis carried out, it can be concluded that students' problem-solving abilities based on the Polya indicators of seventh-grade students of SMP Negeri 2 Wewewa Tengah. The ability of students in the High category increased from 0% to 15%, the ability of students in the medium category also increased from only 5% to 80%, while in the low category decreased from 95% to only 5%. This means that using ICT learning media with phET as a teaching medium can help students improve their problem-solving skills in fraction operations.
Analisis Kemampuan Pemahaman Konsep Matematis Siswa Kelas VIII B SMP Kristen Karuni pada Materi Peluang Wara, Destriyati Saputri Lende; Making, Samuel Rex Mulyadi; Lubur, Dorothea Novia Ludo; Lede, Yulius Keremata
Indo-MathEdu Intellectuals Journal Vol. 6 No. 5 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i5.3928

Abstract

This study aiams to analyze the mathematical concept comprhension capabilities of eight grade students of Karuni Christian Junior High School on the topic of probability. Comprehenson of mathematical concept is a fundamental aspect of matheatics learning that enables students to understand mathematical ideas in depth and apply them in various situations. The topic of probability was chosen because it is considered of the difficult topic by students and requires a strong conceptual understanding. This reaseacrh uses qualitative descritive research methods with a qualitative approach. The reasearch subjects are 26 students of class VIII B of Karuni Christian Junior high school for the 2024/2025 academic year. Data colletion techniques include written tets, interviews, and documenation. The research instruments consist of test questions and interview guidelines developed based on indicators of mathematical concept understanding according to Kilpatrick, Swafford, and Findell. The research result show that students abllity to understand mathematical concepts in the material of probability is in the high category with a percentage 80%, students with a medium abillity are at 75%, and students with low abillity are at 50%. The indicator most masterred by students in the abillity to restate concepts, while the most difficult indicator is presenting concepts in the form of representations.
Analisis Kesalahan Siswa dalam Menyelesaikan Soal Cerita Materi Himpunan untuk Kelas VII SMP Negeri I Loura Ama, Enos Tamo; Making, Samuel Rex. Mulyadi; Lede, Yulius Keremata; Napu, Timotius Wonda
Indo-MathEdu Intellectuals Journal Vol. 6 No. 5 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i5.3945

Abstract

This study aims to determine the level of student errors in working on problems related to this material. The method used in this research is descriptive qualitative method, with the help of research instruments in the form of test question sheets, interview guidelines, scoring guidelines and documentation. Data collection was carried out by conducting tests and interviews with research subjects who were representatives of 16 students in total. The results of student work were then analyzed based on Newman Indicators, using analytical techniques which include data reduction, data analysis, data presentation and conclusion drawing stages. The results showed that the level of student errors in working on problems on set material was still categorized as high, characterized by students with high errors being more dominant than students in the low error category. Based on the results of research and discussion, it can be concluded that the work of seventh grade students of SMP Negeri 1 Loura in solving math problems on set material is still categorized as low.
Eksplorasi Etnomatematika pada Artefak Peninggalan Sejarah di Rumah Budaya Sumba Ate, Arista Ngindi; Lubur, Dorothea Novia Ludo; Making, Samuel R. M.; Napu, Timotius W.; Lede, Yulius Keremata
Indo-MathEdu Intellectuals Journal Vol. 6 No. 5 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i5.4056

Abstract

This research aims to explore and understand the mathematical concepts found in historical artifacts at the Sumba cultural house museum. The method used in this study is qualitative with an ethnographic approach. Data collection is done through observation and interviews, and data analysis. The data collection techniques in this research are observation, interviews, and documentation. The main instrument in this study is the researcher themselves, and the tools used are observation guidelines, interview guidelines, and documentation. The data analysis process is carried out through several stages, namely data reduction, data presentation, and drawing conclusions or verification. The research results show that in the Sumba Cultural House museum there are various types of artifacts, including drums, ancient statues, jars, machetes, shields, gongs, tombstones, and various kinds of jewelry. The mathematical concepts applied to the artifacts in the Sumba Cultural House museum are the concepts of flat shapes and solid shapes. The flat shape concepts applied include squares, rectangles, triangles, kites, rhombuses, and circles. Meanwhile, the solid shape concepts applied include cubes, rectangular prisms, cylinders, and cones.
Penerapan Alat Peraga untuk Mengatasi Miskonsepsi Matematika pada Materi Bangun Ruang Siswa Kelas VII SMP Kristen Karuni Damma, Stefanus Umbu; Making, Samuel Rex Mulyadi; Lubur, Dorothea Novia Ludo; Lede, Yulius Keremata
Indo-MathEdu Intellectuals Journal Vol. 6 No. 6 (2025): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i6.4129

Abstract

The purpose of this study is to determine the extent of understanding students in the application of teaching aids to overcome mathematical misconceptions in material on the construction of grade VII students of Karuni Christian Middle School. The type of research used is classroom action research (CAR). The subjects in this research are the class VII and the object of this research is the application of teaching aids to overcome Mathematical misconceptions in the material on shapes of grade VII students of Karuni Christian Middle School. The data collection technique is using tests, in the form of (post-test and pre-test) observation sheet. Data analysis techniques are carried out at the learning completion stage individual and classical. The results of the study can be concluded from both cycles of learning outcomes in using teaching aids for each student in working on test questions have different understandings. This can be seen from the results of the first cycle test of participants students have not been able to solve the given mathematics problems and in the cycle II students can solve the problems they encounter and are able to overcome them misconception.
Co-Authors A, Klarisa Riavinola M ama, alfianus tamo Ama, Enos Tamo Ansila Ina Kii Ansila Ina Kii Apshinta Milla Ata, Elda Rambu Ate, Arista Ngindi Ate, Dekriati Ate, Kornelia Mikku Bani, Theresia Bili, Fransiskus Ghunu Bili, Mardiyanto Ginto Bili, Nopliana Bili, Yulita Bora, Agustinus Rina Bota, Mariana Ra Bulu, Agustina Rovina Bulu, Martina Sumiyati Carmela Ule, Christofoura Cordia, Grassiana Misseri Daga, Agustinus Tanggu Daindo Milla Daindo Milla Damma, Stefanus Umbu Dangu, Ivan Aris Nono Dappa, Olviana Dawa, Marlince Dedo, Jefrian Rivaldi Deta, Dominggus Umbu Dodo, Arista Ina Dona, Yunita Elkarisme, Yunice Elyakim Nova Supriyedi Patty, Elyakim Nova Supriyedi Engge, Yohanes Fachry Abda El Rahman Florida Moza, Florida Geterudis Kerans Geterudis Kerans Ghello, Dionisius Lede Ghogha, Heronima Ghunu, Yosefina Ina, Yosefa Natalia Ina, Yunita Astuti Noberta Inna, Maya Tamo Jarang, Nelson Tidi Kabobu, Kornelis Kura Kadi, Susanti Kaleka, Yohanes Umbu Kalembu, Stefania Sulastri kerans, geterudis Kholid Kholid Kii, Ansila Ina Kira, Emirensiana Irene Lali Klarisa Riavinola M. A Klarisa Riavinola Miku Ate Ko’a, YuliusRonal Datu Kristoforus Dowa Bili, Kristoforus Laga, Ariyanti Ubu Lango, Ambu Anggreny Langu, Albertina Lazarus Andrianus Pati Zaghu Lende, Mersiana S. Kaka Lende, Petrus Lende, Rosalia Lende, Trimurti Elvin Lero, Oktavianus Wunu Lero, Yuvita Susanti Lika, Yulita Likka, Yusril Enga Lubur, Dorothea N. L. Lubur, Dorothea Novia Ludo Lubur, Dorothea Noviana Ludo Making, Samuel Making, Samuel R. M. Making, Samuel R.M. Making, Samuel Rex Making, Samuel Rex M Making, Samuel Rex M. Making, Samuel Rex Muliyadi Making, Samuel Rex. Mulyadi Malli, Lukas Malo, Anjelina Deviana Malo, Sarmolus Malo, Sisilia Milla Malo, Verena Marawali, Robinson Mariana Ra Bota Maya, Alfridus Mbayu, Dominggus Wuru Mesa, Yohanes Efandi Mila Milla, Apshinta Momo, Christina A. Ninda Mone, Ariyanti Nabuasa, Meriana Napu, Timotius W. Napu, Timotius Woda Napu, Timotius Wonda Ngongo, Dorkas Ngongo, Paskalia Nopliana Bili Paramita Rusadi Legu Awa Paramita Rusadi Legu Awa Pati, Filigon J. U. Raja, Angelina Laja Ratus, Adeodatus Renda, Margaretha Gadi Saga, Eklesia Bodu Samuel Making Samuel R. M. Making Samuel R.M. Making Samuel Rex M. Making Samuel Rex M. Making Samuel Rex Mulyadi Making Samuel Rex Mulyadi Making Samuel Rex Mulyadi Making Samuel Rex Mulyadi Making Samuel Rex Mulyadi Making Setiawi, Agustina Purnami Sophi Kondi Sri Astuti Iriyani Talo, Yohana Anggreni Tana, Wilibrondus Pangga Tanggu, Daud Thoma, Theresia Novita Yeli Uma, Yohanes Toda Wada, Marselina Wadu, Welhem Mine Wara, Destriyati Saputri Lende Watu, Angelita Yessi Duka Walu Wilhelmus Yape Kii Wilhelmus Yape Kii Wilhelmus, kii Yape Wohangara, Ayub Umbu Tonga Wole, Kristoforus Daka Yawu, Yoas Gali Yohanes Engge Yohanis Umbu Kaleka, Yohanis Umbu Yublina Jeni Dapa Yuliana Sesi Bitu Yulita Adelfin Lede Yulita Lika Yunice Elkarisme Zaghu, Lazarus Andrianus Pati Zogara, Leonard