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Journal : Jurnal Infinity

EXPERIENCE STUDENT BACKGROUND AND THEIR BEHAVIOR IN PROBLEM SOLVING Yulyanti Harisman; Muchamad Subali Noto; Wahyu Hidayat
Jurnal Infinity Vol 9, No 1 (2020): Volume 9, Number 1, Infinity
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v9i1.p59-68

Abstract

These Students' mathematical problem solving behavior had been presented in the previous paper. Four categories of students' mathematical problem solving behavior in junior high schools in Indonesia had been obtained. These categories were: naive, routine, semi-sophisticated, and sophisticated. This paper was a continuation of that research. In this session would discuss about external aspects affect student behavior in problem solving. This research used survey method. Eighteen students from three junior high schools in Indonesia had been interviewed about it. These three aspects were: distance of home from school, family background, Contests-contests like math Olympiads that had been followed. The interview results were coded to get conclusions. Research findings were that the external aspects of students did not influence students in behaving to solve problems in mathematics. the implication of this finding is that the main factor influencing student behavior in problem solving is teacher professionalism in learning not from the students themselves, so the teacher must be really prepared in designing all components of learning well.
INVESTIGATION OF STUDENTS' BEHAVIOR IN MATHEMATICAL PROBLEM SOLVING Yulyanti Harisman; Muchamad Subali Noto; Wahyu Hidayat
Jurnal Infinity Vol 10, No 2 (2021): VOLUME 10, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v10i2.p235-258

Abstract

This study is a qualitative research by using the descriptive method that aims to examine the behaviour of eighteen students in Bandung, Indonesia. Six issues related to geometry were given to eighteen of second-grade junior high school students with heterogeneous abilities. The problems given to the students contained all of the problem-solving strategies such as guessing and checking, make a picture, make a list, make a table, working backwards, looking patterns, and using a logical reason, solving simple problems and making questions. Data collection was conducted through mathematical problem-solving tests, recording students’ presentations, and interviewing among researchers and students after doing the problems. The result of recording was a video during the presentation process, and the interview would explore their understanding of the given problems to see the behaviour used by subjects of the research. The data in this research showed that many students’ behaviour identified; in the relevant literature, there are terms of the behaviour of problem-solving naive, routine, and sophisticated. However, the category "naïve," "routine," and "sophisticated" did not fully draw various behaviours observed, it was obtained additional category termed behavioural problem solver "naïve," "routine," "semi-sophisticated" and "sophisticated". It was due to the category of regular students can be divided into two, some students can be directed, and some of them cannot be directed to sophisticated behaviour. Thus, the routine category can be classified into two categories: routine and semi-sophisticated.
THE TEACHERS’ EXPERIENCE BACKGROUND AND THEIR PROFESIONALISM Yulyanti Harisman; Yaya Sukjaya Kusumah; Kusnandi Kusnandi; Muchamad Subali Noto
Jurnal Infinity Vol 8, No 2 (2019): Volume 8 Number 2, Infinity
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v8i2.p129-142

Abstract

Based on literature review Three categories of teachers are: good, very good, and excellent which are viewed from aspects of beliefs, attitude, depth of pedagogical and didactic aspects, and teacher reflection in the learning process has been obtained in previous studies. Various external aspects are considered to affect teacher professionalism in learning about mathematical problem solving. These aspects need to be studied to maximize the teacher professionalism. This study will examine these external aspects, ranging from teaching experience, educational background, and experience in participating in training to improve teacher competencies. This type of qualitative research with survey methods was chosen as a research method. Three teachers from three junior high schools with different clusters were selected as research subjects. Each teacher is given short questions related to this. The results obtained are the experiences of the trainings that teachers follow in increasing their competence and teacher's educational background have more significant influence on teacher professionalism compared to the experience or length of teacher teaching.
"FLIPPED CLASSROOM TYPE PEER INSTRUCTION-BASED LEARNING" BASED ON A WEBSITE TO IMPROVE STUDENT'S PROBLEM SOLVING Tuti Azizah; Ahmad Fauzan; Yulyanti Harisman
Jurnal Infinity Vol 11 No 2 (2022): VOLUME 11, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v11i2.p325-348

Abstract

This study aims to develop learning tools in the form of lesson plans, student worksheets, learning videos, and PPT, based on WEB for first-grade seventh-school material linear equations with flipped classroom-type peer instruction. The development of this WEB-based learning tool uses the Plomp model. The steps for developing web-based learning tools include preliminary needs analysis, curriculum analysis, concept analysis, student analysis, and literature analysis. Then product development and assessment. This research was carried out during the product development stage based on needs analysis, curriculum analysis, concept analysis, student analysis, and literature analysis and then self-evaluated. The preliminary analysis obtained information that teachers need learning tools that can help students improve problem-solving skills, students need engaging learning media, students are interested in using learning media using videos with a period of 10-15 minutes, and PPT, accessed in the WEB. Then the product is compiled and evaluated on its own, related to the apparent error in using it. Based on the preliminary analysis, learning lessons, student worksheets, learning videos, PPT based on WEB and self-evaluation have been produced, which can then be validated by experts.
ANALYSIS OF STUDENT'S ABILITY TO SOLVE MATHEMATICAL LITERACY PROBLEMS IN JUNIOR HIGH SCHOOLS IN THE CITY AREA Yulyanti Harisman; Dwita Elfri Mayani; Armiati Armiati; Hamdani Syaputra; Mohd Hasril Amiruddin
Jurnal Infinity Vol 12 No 1 (2023): VOLUME 12, NUMBER 1, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v12i1.p55-68

Abstract

Mathematical literacy problems require counting and solving mathematical problems in daily life. This study aims to analyze the ability of junior high school students to solve mathematical literacy problems. This qualitative research uses a case study approach with the subject of 15 junior high school students in the city area. The instrument in this study is six mathematical literacy questions oriented to PISA test questions and interview guidelines. The data analysis technique in this study is thematic analysis. This study's results show three groups of students' abilities in solving mathematical literacy problems based on their initial abilities: Time Stone, Power Stone, and Mind Stone
The development of proton-electron math e-comic to improve special needs students’ mathematical concepts understanding Yulyanti Harisman; Fitrani Dwina; Minora Longgom Nasution; Mohd Hasril Amiruddin; Hamdani Syaputra
Jurnal Infinity Vol 12 No 2 (2023): VOLUME 12, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v12i2.p359-376

Abstract

Technology-based learning media is still lacking for special needs students in mathematics. Based on observations and interviews with Special School (SLB) teachers, the learning media used were still monotonous, such as picture books and writing using a blackboard. This research aims to develop e-comic math using the App Pixton application, which is valid and practical for children with special needs in SLB. The research method used is Plomp model development research in the prototype development phase: self-evaluation, expert review, and one-to-one evaluation. The data collection instruments used were a questionnaire and mathematical concepts on addition and subtraction topics for students with special needs. The research subjects were 21 students and 5 teachers from 5 different special schools in 5 West Sumatra, Indonesia cities. The study results show that the media developed is valid and practical for students with deaf and intellectual disabilities. This research implies that teachers must be able to develop other IT-based learning media to help students with special needs learn mathematics like normal children.
Realistic mathematics education (RME) to improve literacy and numeracy skills of elementary school students based on teachers’ experience Fauzan, Ahmad; Harisman, Yulyanti; Yerizon, Yerizon; Suherman, Suherman; Tasman, Fridgo; Nisa, Sahrun; Sumarwati, Sumarwati; Hafizatunnisa, Hafizatunnisa; Syaputra, Hamdani
Jurnal Infinity Vol 13 No 2 (2024): VOLUME 13, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v13i2.p301-316

Abstract

Literacy and numeracy are the abilities of students to use basic mathematics in solving daily life problems, and students should have it. Various studies have shown that Indonesian students' literacy and numeracy skills still need to improve. One of the solutions to this problem is RME, and one of the components that influence this skill is teachers as a facilitator and their experiences. Thus, this research aims to refigure how students who receive Realistic Mathematics Education (RME) literacy and numeracy skills improve based on teacher's experiences. The research subjects are third, fourth, and fifth-grade students in elementary schools in Padang. Three schools were selected for each grade level and taught by three teachers with different experiences. The students were given literacy and numeracy problems before and after RME instruction. The answers were assessed and grouped to examine the student's literacy and numeracy achievement. The research results show that student's literacy and numeracy skills are better with RME learning. Student's literacy and numeracy skills are not influenced by teachers' experience.
Realistic mathematics education (RME) to improve literacy and numeracy skills of elementary school students based on teachers’ experience Fauzan, Ahmad; Harisman, Yulyanti; Yerizon, Yerizon; Suherman, Suherman; Tasman, Fridgo; Nisa, Sahrun; Sumarwati, Sumarwati; Hafizatunnisa, Hafizatunnisa; Syaputra, Hamdani
Jurnal Infinity Vol 13 No 2 (2024): VOLUME 13, NUMBER 2, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v13i2.p301-316

Abstract

Literacy and numeracy are the abilities of students to use basic mathematics in solving daily life problems, and students should have it. Various studies have shown that Indonesian students' literacy and numeracy skills still need to improve. One of the solutions to this problem is RME, and one of the components that influence this skill is teachers as a facilitator and their experiences. Thus, this research aims to refigure how students who receive Realistic Mathematics Education (RME) literacy and numeracy skills improve based on teacher's experiences. The research subjects are third, fourth, and fifth-grade students in elementary schools in Padang. Three schools were selected for each grade level and taught by three teachers with different experiences. The students were given literacy and numeracy problems before and after RME instruction. The answers were assessed and grouped to examine the student's literacy and numeracy achievement. The research results show that student's literacy and numeracy skills are better with RME learning. Student's literacy and numeracy skills are not influenced by teachers' experience.
Enhancing mathematical literacy: A comparative study of mathematics learning curricula in Thailand and Indonesia Fauzan, Ahmad; Harisman, Yulyanti; Boriboon, Gumpanat; Syaputra, Hamdani; Hafizatunnisa, Hafizatunnisa
Jurnal Infinity Vol 14 No 3 (2025): VOLUME 14, NUMBER 3, INFINITY
Publisher : IKIP Siliwangi and I-MES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/infinity.v14i3.p753-780

Abstract

PISA studies from 2000 to 2022 revealed that the achievements of Thailand’s students in mathematics were always better than those of Indonesian students. Thailand still uses the 2008 curriculum until now. Meanwhile, Indonesia already changed its curriculum three times during these periods, namely Curriculum 2006, Curriculum 2013, and Curriculum 2020. Based on this data, it is important to investigate the impact of the curriculum and its implementation on students’ mathematical literacy. This study aimed to investigate how students in Thailand performed better in mathematical literacy compared to their Indonesian counterparts within the context of mathematics curricula.  We compared the mathematics curricula of the two countries and analyzed the implementation of the curricula in mathematics learning. Document analysis, observations, and interviews were conducted. The results show that the curricula and how they are implemented in the two countries are not strikingly different. Three notable differences are students’ focus in the learning process, the preparation of learning admissions by teachers, and changes in the curriculum.
Co-Authors Abdur Rahman As’ari Adnan, Mazlini Ahmad Fauzan Ahmad Fauzan Ahmad Fauzan Aisya Arfah Alisya Putri Chania Alya, Aisyah Amir, Ulfa Ikhwani Amiruddin, Mohd Hasril Ana Shalvia Anepa Anepa Angli Afrinaldi Anisyah Pratiwi Putri Anna Cesaria Anny Sovia Anny Sovia Anny Sovia Arba'Anur, Enysa Armiati Armiati Armiati Arnellis Arnellis, Arnellis Asdamayanti, Nurul Asep Amam Asiah Nurke Asra, Aqilul Atus Amadi Putra Azra Triyana Yusuf Az’zahra, Amelia Boriboon, Gumpanat Delsi K Delsi K Devina Shafira Maharani Dewi Yuliana Fitri Dhorys Ratna Anggelia Dhorys Ratna Anggelia Difa Aziza Dina Citra Resmi Dinovia Fannil Kher Dwi Tari Aprila Dwina, Fitrani Dwita Elfri Mayani Edwin Musdi Elda Rahmadhana Elfisa Delfia Andesta Elita Zusti Djamaan Elniati, Sri Fadiya, Sarah Fanny Rahmatina Rahim Fazri Zuzano Febrian Belia Bangga Fitrani Dwina Fitrani Dwina Fitria Handayani Fridgo Tasman Fridgo Tasman Gusnia Syafrina Gusri Susanti Habibah, Marsha Hafizatunnisa Hafizatunnisa Hafizatunnisa Hafizatunnisa, Hafizatunnisa Hamdani Syaputra Hamdani Syaputra Hamdani Syaputra Helda Syamsuarni Heru Marhen Holyness Nurdin Singadimedja Hrp, Diah Maya Fitrih Husna Husna I Made Arnawa Ida Ayu Putu Sri Widnyani Ida Faridawati Iis Harmailia Ika wahyuni Iqbal Taufik Juandika, Suci Julayfah Irina Nasution Junia Wahyuna Karman La Nani Kelly Angelly Hevardani Khairani Khairani Kusnandi Kusnandi Laksono Trisnantoro Lina Afrona Lita Lovia Lukman Harun Maharani Desvera Putri Maharani, Devina Shafira Mai Yun i Putri Mardianingsih, Titin Marsha Habibah Marsha Habibah Marwia Tamrin Bakar Maulani Meutia Rani Mazlini Adnan Melda Fauziah Melisa M.Pd. Melisa Melisa Melisa Melsa Agusri Minora Longgom Minora Longgom Nasution Minora Longgom Nasution Minora Longgom Nasution Mohd Hasril Amiruddin Mohd Hasril Amiruddin Mohd Hasril Amiruddin Muchamad Subali Noto Muhammad Nabil Muhammad Subhan Muhammad Subhan Mukhni Mukhni Mulia Suryani Mutiara Nelisa Nadira, Khaisa Alifa Nadiyatul Ghina Natasya Pratiwi Nauli, Novia Neldiana, Resmila Neza Nurvatjri Nilawasti ZA Nisa, Sahrun Nova Widia Arif Novelia Mayang Sari Nur ꞌAzizah Nurfadillah Nurfadillah Nurhamidah Nurhamidah Pamio, Lisdiani Permana, Dony Pipin Sumarni Pipin Sumarni Putri, Anisyah Pratiwi Putri, Sri Adinda Rahima Rahima Rahmadhana, Elda Rahmah, Ahyu Rahmati kaWahyu Rahmi Rahmi Reasty Amanda Renaya Dwi Septiani Resmi Darni Reza Yuwandra Rika Saswita Rina Busrina Sari Rina Gusliani Ronal Rifandi Rully Charitas Indra Prahmana Saddam Al Aziz Sahrun Nisa Sefna Rismen Sergia, Yana Sesma Yunita Setiyani Shinta Sari Siska Elda Siska Furnanda Sri Sumarwati Sri Widiawati Suci Mistika Sari Suherman Suherman Suherman Suherman Suherman Suherman Suherman Suherman, Suherman Sumarwati Sumarwati Sumarwati Susmarni Susmarni Syamsiar, Syamsiar Syaputra, Hamdani Sya’bani, Febrina Teti Indriyeni Titi Sartika Tuti Azizah Villia Anggraini Wahyu Hidayat Wahyu Hidayat Widya Novita Sari Yarman Yarman Yasri, Muradhatul Aina Yasser Arafat Yaya Sukjaya Kusumah Yerizon Yerizon Yerizon Yerizon Yerizon Yola Vitriani Yongki Martem Sadri Zakia Oktaviarla Zulfaneti Zulfaneti Zulfitri Aima