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Kesalahan Calon Guru Matematika dalam Menggunakan Ukuran Pemusatan: Pengabaian Variansi Tamba, Kimura Patar; Siahaan, Meiva Marthaulina Lestari; Appulembang, Oce Datu
Jurnal Elemen Vol 7, No 1 (2021): Jurnal Elemen
Publisher : Universitas Hamzanwadi

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Abstract

The measure of the center is an essential topic in statistics. Pre-service mathematics teachers must have the ability to select and use measures of center. The inability to use and select appropriate center measures indicates a low understanding of center measures. Meanwhile, research on the ability to use and select the center's appropriate measures is very limited. This study explores the sources of error for pre-service mathematics teachers in using and selecting the appropriate measures of center. This study involved 177 pre-service mathematics teachers. This research is a qualitative study using the interpretive paradigm. Data were collected using a test containing two problems and clinical interviews. Data were analyzed qualitatively using grouping participant responses based on ways of thinking and ways of understanding to use and select center measures. The results showed that pre-service mathematics teachers could not select an appropriate measure of centers because they were too focused on measures of centers while ignoring the variance. In order to be able to select an appropriate measure of centers because variance must be considered simultaneously. The implication of this study results is the need for a learning approach that introduces concurrent measures of centers with data variance.
Penerapan Metode Peer Tutoring untuk Meningkatkan Pemahaman Konsep Materi Perkalian Bersusun Pada Siswa Kelas III SD Jhon Tetiwar; Oce Datu Appulembang
Scholaria: Jurnal Pendidikan dan Kebudayaan Vol 8 No 3 (2018)
Publisher : Program Studi Pendidikan Guru Sekolah Dasar, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.049 KB) | DOI: 10.24246/j.js.2018.v8.i3.p302-308

Abstract

In learning Mathematics, conceptual understanding is a primary competency that the students must acquire, because through understanding the concept the students would understand what is being learned and are able to apply them thus they can pursue toward the next materials. However, in the reality of a learning process, the students have not yet understood the concept correctly. Therefore, the researcher tried to implement the peer tutoring method. Thus this research is aimed to know that the implementation of peer tutoring method can improve the conceptual understanding on multiple multiplication of the grade III B students in SDN Inpres Harapan. The research method used in this research was Classroom Action Research methodology (CAR) of Kemmis and Taggart spiral model. This research was conducted upon the students of grade III B in SDN Inpres Harapan on August 2017 until October 2017 within three cycles. Instruments used in this research were teacher mentor observation sheet, teacher mentor and peer teacher interview sheet, students’ questionnaire, as well as students’ comprehension test sheet. Based on the research result, it can be concluded that the implementation of peer tutoring method can improve the conceptual understanding on multiple multiplication of the grade III B students in SDN Inpres Harapan.
Kesalahan Calon Guru Matematika dalam Menggunakan Ukuran Pemusatan: Pengabaian Variansi Kimura Patar Tamba; Meiva Marthaulina Lestari Siahaan; Oce Datu Appulembang
Jurnal Elemen Vol 7, No 1 (2021): January
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/jel.v7i1.2806

Abstract

The measure of the center is an essential topic in statistics. Pre-service mathematics teachers must have the ability to select and use measures of center. The inability to use and select appropriate center measures indicates a low understanding of center measures. Meanwhile, research on the ability to use and select the center's appropriate measures is very limited. This study explores the sources of error for pre-service mathematics teachers in using and selecting the appropriate measures of center. This study involved 177 pre-service mathematics teachers. This research is a qualitative study using the interpretive paradigm. Data were collected using a test containing two problems and clinical interviews. Data were analyzed qualitatively using grouping participant responses based on ways of thinking and ways of understanding to use and select center measures. The results showed that pre-service mathematics teachers could not select an appropriate measure of centers because they were too focused on measures of centers while ignoring the variance. In order to be able to select an appropriate measure of centers because variance must be considered simultaneously. The implication of this study results is the need for a learning approach that introduces concurrent measures of centers with data variance.
Pengaruh Pembelajaran Responsi Pada Mata Kuliah Kalkulus II Terhadap Hasil Belajar Mahasiswa Program Studi Pendidikan Matematika FIP UPH Desri Kristina Silalahi; Dylmoon Hidayat; Jacob Stevy Seleky; Oce Datu Appulembang; Robert Harry Soesanto
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 3 No 2 (2019): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v3i2.887

Abstract

The achievement of the graduates profile which is the goal of Mathematics Education majors Teachers College UPH is to prepare teacher candidates who have the character, calling, and competence also the graduates can role as a Mathematics teacher know the concept of knowledge. However, in the achievement of the graduates profile has not been satisfactory, because results of learning are low in some mathematics courses, especially in Calculus II course. Based on the problem, major Teachers College do a structured academic activity that is response learning. The research method used is control group posttest only design. The sample of the research are the students of Mathematics Education major that take the Calculus II course in the academic year 2015/2016 as the control group and who take the Calculus II course in the academic year 2016/2017 as the experimental group. The improvement of this reponse learning result is seen from t-test analysis, obtained the decision of hypothesis test is exist significant difference between the control class and the experimental class. Keywords : response, calculus II, learning result
Penerapan Pembelajaran Kooperatif Tipe STAD (Student Team Achievement Division) untuk Meningkatkan Pemahaman Konsep Siswa Kelas VIII Sekolah ABC Topik Relasi dan Fungsi [The Implementation of the Student Team Achievement Division (STAD) Cooperative Learning Type to Improve Conceptual Understanding of Relation and Function Topics of Grade VIII Students at ABC School] Debima Solli Ruruk Tipa; Maya Puspitasari Izaak; Oce Datu Appulembang
Polyglot Vol 12, No 2 (2016): April
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/pji.v12i2.367

Abstract

This research was based on the observation that most of the students had low conceptual understanding.  The Student Team Achievement Division (STAD) Cooperative Learning type was applied.  The purpose of the research was to increase conceptual understanding through the implementation of STAD and to understand the procedures of STAD Cooperative Learning in increasing conceptual understanding. This was the Classroom Action Research (CAR) model by Kemmis and Taggart that was conducted between August 3, 2015 and September 21, 2015 at the Grade VIII ABC School.  There were three cycles of CAR that involved 32 students.  The instruments of data collection were a test paper, a group assignment sheet, an open-ended observation sheet, a questionnaire, a mentor feedback sheet, a mentor and a student interview sheet, and reflection journals.  Based on the data analysis, it was found that the implementation of STAD Cooperative Learning was able to increase the conceptual understanding of Grade VIII students on the topics of Relation and Function. BAHASA INDONESIA ABSTRAK: Penelitian ini didasarkan atas hasil observasi  yang menemukan bahwa sebagian besar siswa memiliki pemahaman konsep yang rendah.Pembelajaran kooperatif tipe STAD (Student Team Achievement Division) dicoba untuk diterapkan. Penerapan STAD diharapkan dapat mencapai tujuan penelitian yaitu meningkatkan pemahaman konsep melalui penerapan STAD dan mengetahui langkah-langkah pembelajaran kooperatif tipe STAD dalam meningkatkan pemahaman konsep. Penelitian ini adalah penelitian tindakan kelas (PTK) dengan model Kemmis dan Taggart yang berlangsung selama 03 Agustus 2015 - 21 September 2015 di kelas VIII di sekolah ABC. Penelitian dilakukan dengan tiga siklus dengan melibatkan 32 siswa. Adapun instrumen yang digunakan dalam pengumpulan data yaitu lembar tes, lembar LKK kelompok, lembar observasi terbuka, lembar angket, lembar umpan balik mentor, lembar wawancara siswa dan mentor, dan jurnal refleksi.  Berdasarkan analisis data, diperoleh bahwa penerapan tahapan pembelajaran kooperatif tipe STAD (Student Team Achievement Division) mampu meningkatkan pemahaman konsep siswa kelas VIII pada topik relasi dan fungsi.
The Effect of Brainstorming Implementation on Students’ Engagement in Learning about Probability in Math Classes in Grade XI IPA at SMA ABC Cikarang Elsar Agung Triansa; Juniriang Zendrato; Oce Datu Appulembang
Polyglot Vol 12, No 1 (2016): January
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/pji.v1i1.380

Abstract

This research aims to determine the effects of brainstorming on students’ engagement in learning about probability. The method used in this research is the quasi-experimental with a non-equivalent control group. The sampling technique is in the form of a census. The data was collected through a questionnaire and analyzed by using non-parametric tests -- the Mann-Whitney U-test and the Wilcoxon Signed-Rank test with alpha level of 0.05. The results show that: 1) there was no significant difference on students’ engagement before and after the experiment in the group that was taught without brainstorming; 2) there was significant difference on students’ engagement before and after the experiment in the group taught with brainstorming; and 3) there was no significant difference on students’ engagement between the group that was taught with brainstorming and the group that was taught without brainstorming. The result of this research indicates that implementing brainstorming produces a positive effect on students’ engagement in learning about probability in math classes in grade XI IPA at SMA ABC Cikarang.BAHASA INDONESIA ABSTRAK: Penelitian ini bertujuan untuk menemukan pengaruh penerapan brainstorming terhadap keterlibatan siswa dalam mempelajari topik peluang.Metode yang digunakan dalam penelitian ini adalah quasi-eksperimen dengan desain non-equivalent control group. Data dikumpulkan melalui kuisioner dan dianalisis dengan uji non-parametrik, yaitu uji Mann-Whitney U dan uji Wilcoxon Signed-Rank dengan taraf signifikansi 0.05.Hasil penelitian menunjukkan bahwa: 1) tidak ada perbedaan yang signifikan dalam keterlibatan siswa antara sebelum dan sesudah perlakuan di grup yang diajar tanpa brainstorming (hasil uji Wilcoxon Signed-Rank: ); 2) ada perbedaan yang signifikan pada keterlibatan siswa antara sebelum dan sesudah perlakuan di grup yang diajar dengan brainstorming (hasil uji Wilcoxon Signed-Rank: ); dan 3) tidak ada perbedaan yang signifikan pada keterlibatan siswa antara grup yang diajar dengan brainstorming dan tanpa brainstorming (hasil uji Mann-Whitney U: ). Hasil dari penelitian ini mengindikasikan bahwa penerapan brainstorming memberikan pengaruh yang positif terhadap keterlibatan siswa dalam mempelajari peluang di pelajaran matematika kelas XI IPA SMA ABC Cikarang.
Profil Pemecahan Masalah Aljabar Berpandu Pada Taksonomi SOLO Ditinjau Dari Gaya Kognitif Konseptual Tempo Siswa SMA Negeri 1 Makale Tana Toraja [A Profile of Guided Algebra Problem Solving Using the SOLO Taxonomy and the Cognitive Conceptual Tempo Style of Students at the SMA Negeri 1 School In Makale, Tana Toraja] Oce Datu Appulembang
Polyglot Vol 13, No 2 (2017): July
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/pji.v13i2.336

Abstract

The objective of this research was to discover the process used in solving a superitem test which consisted of 4 stages according to the SOLO (Structure of Learning Outcomes) Taxonomy, namely unistuctural, multistructural, relational, and extended abstract, and reviewed using the cognitive impulsive and reflective style. The research was qualitative research. The main instrument of the research was the researcher himself guided by a superitem test, an impulsive-reflective cognitive test namely MFFT (Matching Familiar Figure Test), and a valid interview guideline. The subject of this research was the students of class X1 at SMA Negeri 1 Makale Tana Toraja consisting of four students in which 2 subjects were with cognitive impulsive style and 2 subjects with cognitive reflective style. The data was collected by giving a superitem test which was verified with an interview. The results of the research show that: (a) the first subject’s impulsive and reflective style showed the tendency of problem solving at an abstract level which was expanded in the question of one variable linear equation and in the question of two variable linear equation, (b) the second subject’s impulsive cognitive style in two variable linear equation problem solving showed the tendency of unistuctural and relational thinking only, (c) the second subject’s cognitive reflective style showed the tendency of problem solving in relational level, (d) the subject’s impulsive and reflective cognitive style showed the tendency of the same problem solving in the level unistructural, multistructural, relational, and abstract in the question of one variable linear equation, and different in the abstract level in the question of two variable linear equation.BAHASA INDONESIA ABSTRAK: Tujuan penelitian ini adalah untuk mengetahui profil pemecahan masalah dengan melihat dan mengungkap proses berpikir siswa dalam menyelesaikan tes superitem yang terdiri atas 4 tingkatan menurut Taksonomi SOLO (Structure of Observed Learning Outcomes), yaitu: unistruktural, multistruktural, relasional, dan abstrak yang diperluas ditinjau dari gaya kognitif impulsif dan reflektif. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Instrumen utama dalam penelitian ini adalah peneliti sendiri yang dipandu oleh tes superitem, tes gaya kognitif impulsif-reflektif, yaitu: MFFT (Matching Familiar Figure Test), dan pedoman wawancara yang valid. Subjek penelitian ini adalah siswa kelas X1 SMA Negeri 1 Makale Tana Toraja yang terdiri dari 4 subjek yang mana 2 subjek gaya kognitif impulsif dan 2 subjek gaya kognitif reflektif. Pengumpulan data dilakukan dengan pemberian tes superitem dan verifikasi dengan wawancara. Hasil penelitian ini adalah (a) Subjek pertama gaya kognitif impulsif (GKI) maupun reflektif (GKR) menunjukkan kecenderungan pemecahan masalah pada tingkat abstrak yang diperluas pada soal persamaan linear satu variabel dan soal persamaan linear dua variabel, (b) Subjek kedua gaya kognitif impulsif pada pemecahan masalah persamaan linear dua variabel menunjukkan kecenderungan berpikir unistruktural dan relasional saja, (c) Subjek kedua gaya kognitif reflektif (GKR) menunjukkan kecenderungan pemecahan masalah pada tingkat relasional, (d) Subjek gaya kognitif impulsif maupun reflektif menunjukkan kecenderungan pemecahan masalah yang sama pada tingkat unistruktural, multistruktural, relasional dan abstrak pada soal persamaan linear satu variabel, dan berbeda pada tingkat abstrak pada soal persamaan linear dua variabel.
IMPLEMENTASI BELAJAR MENGAJAR MATEMATIKA SEKOLAH DI IMMANUEL BONANG [THE IMPLEMENTATION OF SCHOOL MATHEMATICS TEACHING LEARNING IN IMMANUEL BONANG] Oce Datu Appulembang; Kurnia Putri-Sepdikasari Dirgantoro; Jacob Stevy Seleky
Jurnal Sinergitas PKM & CSR Vol 4, No 3 (2020): DECEMBER
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/jspc.v4i3.2866

Abstract

Guidance and assistance in learning are necessary for every child, whether it is for the students who have attended school or not. Most of the parents who live in the Bonang area can not fulfill this activity. Parents who have not be able to accompany their children in learning after school are caused several factors, namely cognitive inability of parents, the busyness of parents in work, and the inability of parents economically to send their children to learning center, and some are even do not trust some learning center. Mathematics education students are prepared in the field of school mathematics teaching and learning expertise. For them, this activity is a valuable opportunity to gain teaching experience, as well as learning to implement the theories that have been learned, both in terms of pedagogy and mathematics. The purpose of this community is as a place to synchronize students’ need to implement their learning practices with the needs of schoolchildren around Bonang. The activity is in the form of assistance at one of the residents’ houses in Bonang. The benefits of this assistance activity are felt by all parties, schoolchildren as learning participants receive learning guidance in terms of cognitive and character, parents who are assisted and feel happy to see children's development in education, and the tutors can directly learn to implement knowledge and practice teaching.BAHASA INDONESIA ABSTRACT: Bimbingan dan pendampingan belajar diperlukan oleh setiap anak, baik yang bersekolah maupun yang tidak bersekolah. Kegiatan tersebut belum dapat dipenuhi oleh sebagian besar orang tua yang berdomisili di daerah Bonang. Orang tua yang belum dapat mendampingi anak-anaknya dalam belajar sepulang sekolah disebabkan oleh beberapa faktor yaitu ketidakmampuan orang tua secara kognitif, kesibukan orang tua dalam bekerja dan ketidakmampuan orang tua secara ekonomi untuk mengikutsertakan anaknya di dalam bimbingan belajar yang bersifat komersial, bahkan ada yang kurang percaya pada bimbingan belajar tertentu. Mahasiswa pendidikan matematika dipersiapkan pada bidang keahlian belajar mengajar matematika sekolah. Bagi mahasiswa, kegiatan tersebut merupakan kesempatan yang berharga untuk mendapatkan pengalaman mengajar, sekaligus belajar untuk mengimplementasikan teori yang sudah dipelajari, baik dari segi pedagogy maupun keilmuan matematika. Tujuan dari kegiatan ini adalah sebagai wadah untuk mensinkronisasikan kebutuhan mahasiswa untuk mengimplementasikan praktik pembelajaran mereka dengan kebutuhan anak sekolah di sekitar Bonang. Adapun kegiatan bimbingan belajar tersebut diselenggarakan di rumah salah satu warga di Bonang. Manfaat kegiatan bimbingan belajar ini dirasakan oleh semua pihak, anak-anak sekolah sebagai peserta belajar mendapatkan bimbingan belajar dari segi koginitif dan karakter, orangtua yang terbantukan dan merasa bahagia melihat perkembangan anak dalam pendidikan dan mahasiswa pendidikan matematika yang menjadi tutor dapat secara langsung belajar mengimplementasikan ilmu dan praktek mengajarnya.
MENGATASI PERMASALAHAN MOTIVASI BELAJAR SISWA MELALUI BIMBINGAN BELAJAR SIGMA [OVERCOMING STUDENTS' LEARNING MOTIVATION PROBLEMS IN SIGMA LEARNING HOUSE] Tanti Listiani; Melda Jaya Saragih; Oce Datu Appulembang; Widiastuti Widiastuti
Jurnal Sinergitas PKM & CSR Vol 6, No 1 (2022): APRIL
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/jspc.v6i1.5122

Abstract

SIGMA tutoring is conducted in a church, namely the HKBP Binong Permai Tangerang. Because of the pandemic of COVID-19 in 2021, parents of church congregations have complaints about learning difficulties experienced by their children while online learning. The problem arises because the material studied by their children is quite difficult for their parents to guide. A solution is needed to overcome these problems, namely through Sigma tutoring. Sigma tutoring is implemented online by providing individual guidance for students. Online tutoring is being implemented currently according to government recommendations, it is prohibited to conduct face-to-face meetings between individuals. Even though by online learning, Sigma tutoring has a positive impact, namely that students/tutees feel helped by their learning difficulties, and tutors who are students can further hone their teaching skills through this Sigma tutoring. BAHASA INDONESIA ABASTRACT: Bimbingan belajar SIGMA dilaksanakan di sebuah gereja yakni HKBP Binong Permai Tangerang. Akibat Pandemi akibat COVID-19 pada tahun 2021 ini, orang tua dari jemaat gereja memiliki keluhan atas kesulitan belajar yang dialami anak-anaknya saat belajar online. Permasalahan muncul karena materi yang dipelajari oleh anak-anaknya cukup sulit untuk  dibimbing oleh orang tua mereka. Dibutuhkan solusi untuk mengatasi permasalahan tersebut, yakni melalui bimbingan belajar Sigma. Bimbingan belajar Sigma adalah bimbingan belajar yang dilaksanakan secara online, dengan memberikan bimbingan per individu untuk peserta didik. Bimbingan belajar secara online sedang marak dilaksanakan karena saat ini sesuai anjuran pemerintah melarang untuk melakukan pertemuan  tatap muka antar personal. Meskipun  dilakukan secara online, bimbingan belajar Sigma memberikan dampak positif yakni peserta didik/tutee merasa terbantu kesulitan belajarnya serta Tutor yang adalah mahasiswa dapat semakin mengasah kemampuan mengajarnya melalui bimbingan belajar Sigma ini.
IMMANUEL TUTORIAL SERVICE OF ANUGERAH STUDY COURSE IN RAWACANA Oce Datu Appulembang; Kurnia P.S. Dirgantoro; Jacob Stevy Seleky; Novel Priatna
Jurnal Sinergitas PKM & CSR Vol 1, No 2 (2017): April
Publisher : Universitas Pelita Harapan

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Abstract

The low standart of living in scavenger area in Rawacana is affect children education in their family. Most of them are only get a modest education and even do not have the opportunity to get an education and drop out. Bu Honey and family have a desire to increase the standart of living of this community through education for local children. He has set up study huts in the scavenger area to help children get the informal education. Seeing the number of children who need to be educated in that place, so that they need the educators who are committed to teach in that place. Therefore, cooperation with Mathematics Education, FIP TC UPH facilitated by her husband as UPH lecturer Mr. Dylmoon through Community Service acrivity. The Mathematics Education Study Program provides educators as a tutor. They will help to teach the children in that study lodge every week. The purpose of this activity is to help children in their homework, to help understand the difficult lessons, to help children in installing a striving attitude through study hard and to reach out the children who do not get formal education in school so that they can experience the same education as those who attend school.