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Elfira Rahmadani
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Computer Science & IT Economics, Econometrics & Finance Education Mathematics Medicine & Pharmacology Social Sciences Other

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Analisis Kesalahan Siswa Dalam Menentukan Sisi, Rusuk, Dan Titik Sudut Kubus Di SMP Kelas VIII Suci Ramayanti Sugeng; Aidilla Fitria Sari Siregar; Annisa Jalwa Br Panjaitan; Cindy Syaharani; Amanda Raina Sartika; Elfira Rahmadani
Jurnal Ilmiah Multidisiplin Nusantara (JIMNU) Vol. 4 No. 2 (2026): JIMNU - JULI
Publisher : PT. Padang Tekno Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59435/jimnu.v4i2.705

Abstract

Penelitian ini mengkaji bentuk-bentuk kesalahan beserta faktor penyebabnya yang dialami siswa kelas VIII SMP ketika mengidentifikasi sisi, rusuk, dan titik sudut pada bangun kubus. Desain kualitatif deskriptif dipilih agar respons siswa dapat ditelaah secara mendalam tanpa adanya perlakuan atau manipulasi terhadap variabel penelitian. Sebanyak 30 siswa kelas VIII dijadikan subjek melalui teknik purposive sampling, dan 6 di antaranya dipilih untuk sesi wawancara semi terstruktur yang mewakili tiga tingkat kemampuan akademik, yaitu tinggi, sedang, dan rendah. Pengumpulan data dilakukan melalui tes diagnostik tertulis, wawancara yang direkam, dan dokumentasi. Analisis data mengacu pada model interaktif Miles dan Huberman yang terdiri atas reduksi data, penyajian data, dan penarikan kesimpulan, dengan triangulasi metode untuk menjaga keterpercayaan temuan. Hasil penelitian menunjukkan bahwa 46,67% siswa melakukan setidaknya satu kesalahan dalam mengidentifikasi sisi kubus, 63,33% siswa melakukan kesalahan terkait rusuk, dan 36,67% siswa mengalami kesulitan dalam mengidentifikasi titik sudut secara tepat. Tiga kategori kesalahan yang dominan teridentifikasi, yaitu kesalahan konsep berupa kekeliruan mengidentifikasi unsur geometris, kesalahan visualisasi yang berkaitan dengan kesalahan membaca representasi tiga dimensi, dan kesalahan prosedural dalam menghitung komponen geometris secara sistematis. Faktor penyebab meliputi dimensi internal, terutama lemahnya pemahaman konsep dan rendahnya kemampuan penalaran spasial, serta dimensi eksternal seperti minimnya media pembelajaran dan dominasi strategi mengajar berbasis ceramah. Temuan ini menegaskan perlunya pendekatan pembelajaran geometri bangun ruang yang lebih eksploratif, konstruktivis, dan berbasis media di jenjang SMP. This study investigates the types and underlying causes of errors made by eighth-grade junior high school students when identifying the faces, edges, and vertices of a cube. A qualitative descriptive research design was employed to examine students' responses in depth without manipulating any research variables. Thirty students from the eighth grade were selected through purposive sampling, and six of them participated in semi-structured interview sessions representing three levels of academic ability: high, moderate, and low. Data were gathered using written diagnostic tests, audio-recorded interviews, and documentation. Analysis followed the interactive model proposed by Miles and Huberman, encompassing data reduction, data display, and conclusion drawing, with methodological triangulation applied to ensure the trustworthiness of findings. Results indicated that 46.67% of students committed at least one error in identifying cube faces, 63.33% made errors related to edges, and 36.67% had difficulty identifying vertices correctly. Three dominant error categories were identified: conceptual errors, visualization errors, and procedural errors. Causal factors encompassed internal dimensions, particularly weak conceptual understanding and limited spatial reasoning ability, and external dimensions, including insufficient instructional media and lecture-based teaching strategies.
MENINGKATKAN ADVERSITY QUOTIENT SISWA MENGGUNAKAN AUTOGRAPH Ely Syafitri; Sahat Saragih; E. Elvis Napitupulu; KMS. Muhammad Amin Fauzi; anim anim; Elfira Rahmadani; Syahriani Sirait; Ismail Hanif Batubara
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 5 No. 2 (2022): June 2022
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v5i2.905

Abstract

Abstract. This study aims to determine the difference in  adversity quotient between students who learn to use the Autograph learning media and students who receive conventional learning. The formulation of the problem in this study is "Is there a difference between the adversity quotient of students who learn to use Autograph learning media and students who receive conventional learning?". This research is a quasi-experimental research, where the teacher plays a direct role in the learning process and the researcher acts as an observer. The subjects in this study were students of class VIII MTs Al-Arifin Rahuning totaling 100 people and as a sample of class VIII-1 totaling 28 people. While the object of this research is the adversity quotient of students towards learning mathematics. Collecting data in this study using observation sheets and adversity quotient. To find out the results of this study, it was carried out using the t test and to determine whether or not there were differences in the adversity quotient of students towards learning mathematics. Based on the results of data analysis carried out, it was concluded that there was a difference in the adversity quotient between students who learned to use the Autograph learning media and students who received conventional learning with a tcount= 8.29 greater than ttable at the 5% significance level and significant 1% of 2.14 and 2.96.Keyword: Autograph, Adversity Quotient, Mathematic educationAbstrak. Penelitian ini bertujuan untuk mengetahui perbedaan adversity quotient antara siswa yang belajar menggunakan media pembelajaran Autograph dan siswa yang mendapatkan pembelajaran konvensional. Rumusan masalah dalam penelitian ini adalah “Apakah ada perbedaan antara adversity quotient siswa yang belajar menggunakan media pembelajaran Autograph dengan siswa yang mendapatkan pembelajaran konvensional?”. Penelitian ini merupakan penelitian eksperimen semu, dimana guru berperan langsung dalam proses pembelajaran dan peneliti bertindak sebagai pengamat. Subjek dalam penelitian ini adalah siswa kelas VIII MTs Al-Arifin Rahuning yang berjumlah 100 orang dan sebagai sampel kelas VIII-1 yang berjumlah 28 orang. Sedangkan objek penelitian ini adalah adversity quotient siswa terhadap pembelajaran matematika. Pengumpulan data dalam penelitian ini menggunakan lembar observasi dan adversity quotient. Untuk mengetahui hasil penelitian ini dilakukan dengan menggunakan uji t dan untuk mengetahui ada tidaknya perbedaan adversity quotient siswa terhadap pembelajaran matematika. Berdasarkan hasil analisis data yang dilakukan, disimpulkan bahwa terdapat perbedaan adversity quotient antara siswa yang dibelajarkan menggunakan media pembelajaran Autograph dan siswa yang mendapatkan pembelajaran konvensional denganhitung= 8,29 lebih besar dari ttabel sebesar 5 % tingkat signifikansi dan signifikan 1% sebesar 2,14 dan 2,96.
PEMBELAJARAN MATEMATIKA MENGGUNAKAN APLIKASI GEOGEBRA SEBAGAI ALAT BANTU DITINJAU BERDASARKAN CURIOSITY SISWA Anim Anim; Sahat Saragih; E. Elvis Napitupulu; KMS. Muhammad Amin Fauzi; Syahriani Sirait; Ely Syafitri; Elfira Rahmadani; Nilam Sari
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol. 5 No. 2 (2022): June 2022
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v5i2.944

Abstract

Abstract: This study aimed to determine students Curiosity in learning geometry using the Geogebra application. This research was conducted at a private junior high school in the Sei Bejangkar area for the 2021/2022 academic year. The method used in this research is quasi-experimental. Data was collected after the treatment was obtained from students' curiosity questionnaires on geometry material. The study results revealed that there was a significant effect on learning mathematics using the Geogebra application on students Curiosity. This can be seen from the curiosity questionnaire scores of students who were taught geometry learning with the aid of the Geogebra application and 94 scores of students who were taught using conventional learning media were 84 scores. The analysis of covariance calculations shows that for learning Fcount  Ftabel  =     , so Ho is rejected and Ha. In addition, the height of the regression line describes student learning outcomes, namely when X = 0, then the regression equation for Curiosity learning class using Geogebra is obtained Y = 62,777 and the conventional learning class regression equation Y = 61.399. It means that it can be concluded that there is a significant influence on learning using Geogebra on students Curiosity about the geometri material. Keywords: Geogebra; Curiosity; Mathematic Abstrak: Tujuan penelitian ini adalah untuk mengetahui curiosity siswa pada pembelajaran geometri yang menggunakan software Geogebra. Penelitian ini dilakukan di SMP Swasta daerah Sei Bejangkar Tahun Ajaran 2021/2022. Metode yang digunakan dalam penelitian ini adalah metode quasi eksperimen. Pengumpulan data diberikan setelah perlakuan diperoleh dari angket curiosity siswa pada materi geometri. Hasil penelitian mengungkapkan bahwa terdapat pengaruh yag signifikan pada pemebalajarn matematika menggunakan aplikasi geogebra terhadapa Curiosity siswa. Hal ini dapat dilihat dari skor angket curiosity siswa yang diajar pada pembelajaran geometri dengan berbantuan software Geogebra adalah sebesar dan 94 skor siswa yang diajar dengan media pembelajaran konvensional adalah sebesar 84 skor . Hasil analisis kovarians perhitungan menunjukkan bahwa untuk pembelajaran diperoleh Fhit  Ftabel  =     , sehingga Ho ditolak dan Ha . Selain itu Ketinggian garis regresi menggambarkan hasil belajar siswa, yaitu pada saat X = 0 maka persamaan regresi untuk Curiosity kelas pembelajaran menggunakan Geogebra diperoleh Y = 62,777 dan persamaan regresi kelas pembelajaran konvensional Y = 61,399.  Berarti dapat disimpulkan bahwa terdapat pengaruh signifikan pada pembelajaran menggunakan Geogebra  terhadap Curiosity siswa pada materi geometri. Kata kunci: Geogebra; Curiosity; Matematika
EFEKTIVITAS MODEL PEMBELAJARAN BLENDED LEARNING DITINJAU DARI KEMAMPUAN BERPIKIR KRITIS SISWA Nurul Indah Rahmadani; sri rahmah Saragih; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 1 No. 1 (2023): Januari 2023
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Abstract

The purpose of this study was to determine the effectiveness of the Blended Learning Learning Model in terms of Students' Critical Thinking Ability in the Three-Variable Linear Equation System Material in Class X SMA Air Joman Private Regional Academic Year 2021/2022. This type of research is descriptive qualitative research. The subjects in this study were all students of class X MIPA 1 consisting of 24 students. The data collection instruments used included test questions in the form of 5 questions which referred to indicators of students' critical thinking skills including the ability to generalize, the ability to identify, the ability to formulate problems into mathematical models, the ability to deduce using principles and the ability to provide further explanations. The data analysis technique used in this study was assessing the results of students' answers and determining the percentage of students' critical thinking skills scores seen from student answer sheets. It can be explained that there are 17 students who get a complete score, and 7 students get an incomplete score. Mastery in critical thinking skills is a benchmark for determining student success in solving critical thinking skills test questions. The effectiveness of Blended Learning in terms of students' critical thinking skills in the matter of a three-variable linear equation system in class X SMA Air Joman Regional Private School for the 2021/2022 academic year is 71% with the criteria being quite effective
UPAYA PENINGKATAN KEMAMPUAN KOMUNIKASI MATEMATIS SISWA MELALUI MODEL DISCOVERY LEARNING BERBANTUAN APLIKASI GEOGEBRA Rini Rini; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 1 No. 2 (2023): Juli 2023
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Abstract

Tujuan penelitian ini adalah untuk membantu siswa kelas IX-B di UPT SMP Negeri 2 Lima Puluh Pesisir dalam kemampuan komunikasi matematis dengan menggunakan model Pembelajaran Discovery Learning Berbantuan Aplikasi Geogebra. Pada semester genap tahun ajaran 2022/2023. Penelitian ini menggunakan Penelitian Tindakan Kelas (PTK) selama dua siklus, dengan setiap siklus terdiri dari empat kali pertemuan. Yang memerlukan langkah-langkah berikut: persiapan, tindakan, evaluasi. Lembar observasi pembelajaran dan penilaian kemampuan komunikasi matematis matematis digunakan sebagai instrumen penelitian. Ada total 22 peserta dalam penelitian ini; 11 laki-laki dan 11 perempuan dari kelas IX-B di UPT SMP Negeri 2 Lima Puluh Pesisir.Kemampuan komunikasi matematis siswa sebelum dan sesudah intervensi dibandingkan. Rata-rata prestasi siswa dalam prasiklus sebesar 59,09%, pada siklus I sebesar 69,18%, dan pada siklus II sebesar 79,18%. Selain itu, banyak siswa pada siklus II yang mencapai KKM klasikal 86,36, dimana PKK lebih besar dari 85%. Penelitian ini menyimpulkan bahwa model pembelajaran Discovery Learning Aplikasi Geogebra dapat meningkatkan kemampuan komunikasi matematis siswa kelas IX-B UPT SMP Negeri 2 Lima Puluh Pesisir .Kata Kunci: Komunikasi Matematis, Discovery Learning Berbantuan Aplikasi Geogebra, Bangun Ruang Sisi Lengkung.
PENINGKATAN KEMAMPUAN BERFIKIR KRITIS MENGGUNAKAN MODEL DISCOVERY LEARNING BERBANTUAN VIDEO PEMBELAJARAN BERBASIS ETNOMATEMATIKA uci pra tiwi; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 2 No. 1 (2024): Januari 2024
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Abstract

Tujuan penelitian ini adalah untuk mengetahui peningkatan kemampuan berfikir kritis siswa kelas X Madrasah Aliyah Swasta Islamiyah Hessa Air Genting tahun ajaran 2022/2023 yang menggunakan pembelajaran dengan model Discovery Learning berbantuan video pembelajaran  berbasis etnomatematika dibandingkan dengan yang menggunakan model pembelajaran konvensional. Penelitian ini merupakan penelitian eksperimen menggunakan  desain penelitian Pretest-Posttest Control Group Design. Populasi dalam penelitian ini adalah seluruh siswa kelas X Madrasah Aliyah Swasta Islamiyah Hessa Air Genting. Teknik pengambilan sampel pada penelitian ini adalah purpose sampling, dimana sampel dipilih dengan pertimbangan peneliti sesuai dengan tujuan penelitian. Kelas X IPA-1 sebagai kelas eksperimen yang diajarkan dengan menggunakan model pembelajaran Discovery Learning berbantuan video pembelajaran berbasis etnomatematika sedangkan kelas X IPA-2 sebagai kelas kontrol diajarkan dengan menggunakan  model pembelajaran konvensional. Data yang diperoleh dalam penelitian ini berupa skor kemampuan berpikir kritis siswa  yang dianalisis dengan uji-t. Berdasarkan hasil analisis data diperoleh bahwa kemampuan berpikir kritis siswa yang menggunakan model pembelajaran Discovery Learning berbantuan video pembelajaran berbasis Etnomatematika lebih tinggi dibandingkan dengan kemampuan berpikir kritis siswa yang menggunakan model pembelajaran konvensional.Kata Kunci: Model Pembelajaran Discovery Learning, Etnomatematika, Kemampuan Berpikir Kritis Siswa
PENGRUH MODEL APTITUDE TREATMENT INTERACTION (ATI) BERBANTUAN KINEMASTER TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIS SISWA T.A 2022/2023 Vici Wirawati Vici; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 2 No. 1 (2024): Januari 2024
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Abstract

The aim of this study is to find out whether there is an influence of the Aptitude Treatment Interaction (ATI) learning model on mathematical communication skills in the material Lines and Series Arithmetic at XIth Class of SMA NEGERI 1 AIR JOMAN in 2022/2023 Academic Year, which is taught using the Kinemaster assisted application. It is an application that can be used by a smartphone which is useful for editing various interesting videos by presenting a fairly simple display. This study uses a learning model (ATI) which contains a number of methods/ways in teaching students to improve students' mathematical communication skills. From the results of research conducted on 30 students at the experimental class and control class by giving questions in essay form, the learning results were even better. From this, it can be concluded that the ATI learning model has an effect on improving students' mathematical communication skills. Where the average student score increases from the previous score. .Keywords: Kinemaster Application, Aptitude Treatment Interaction (ATI) Learning Model, Student Mathematical Communication
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) BERBASIS LIVEWORKSHEETS MENGGUNAKAN DISCOVERY LEARNING DITINJAU DARI KEMAMPUAN PEMECAHAN MASALAH Harniati - Lubis; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 3 No. 2 (2025): Juli 2025
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Abstract

The aim of this research is to develop and produce Liveworksheets-based Student Worksheets (LKPD) that are Valid, Practical and Effective. The type of research used is Research and Development (R&D) with a 4D development model which includes Definition, Design, Development and Dessisminate. The subjects of this research are 27 students  at XII th IPAClass of SMA Swasta  Daar Al Falah. The object of this research is Liveworksheets LKPD Based Using the Discovery Learning Model on Similarity and Congruence Material. The instruments used are LKPD Validation Sheets for Expert Lecturers and Mathematics Teachers for the Validity ones, Teacher and Student Assessment Sheets for the Practical Aspect, Problem Solving Ability Test Questions for the Effectiveness Aspect. Based on the results of the RPP feasibility test, LKPD, questionnaire. Teachers, Student Questionnaires, and Problem Solving Ability Tests obtained an average of 89.9% including the "Very Valid" category. Furthermore, the Liveworksheets-based LKPD was assessed by Teachers and Students with an average of 92.35% including the "Very Practical" category. , Furthermore, to measure problem solving abilities, the test gave students 5 questions with an average of 97.4%, including the "Very Effective" category. Thus, Liveworksheest based Student Worksheets (LKPD) using Discovery Learning in terms of Problem Solving Ability are declared to meet the criteria of Valid, Practical and Effective. Keywords: LKPD development, Liveworksheets, Discovery Learning, Problem Solving Ability
PENGEMBANGAN LKPD BERBASIS MULTIMEDIA INTERAKTIF MENGGUNAKAN MODEL DISCOVERY LEARNING DITINJAU DARI KEMAMPUAN PEMAHAMAN KONSEP MATEMATIS PESERTA DIDIK DI SMA NEGERI 6 TANJUNGBALAI T.A. 2023/2024 khairani sinaga; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 3 No. 1 (2025): Januari 2025
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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The aim of this research is to develop and produce interactive multimedia- based LKPD on sequences and arithmeic series and improve the ability to understand mathematical concepts of class This type of research is R&D development research (research& development) using the 4D model (define, design, development, disseminate). The result of this research is an interactive multimedia-based worksheet on sequences and arithmetic series. Based on the validity test, it can be seen from the results of the LKPD assessment which was assessed by 2 lecturers and 1 mathematics teacher with an average percentage of 95% in the very valid category. Meanwhile,  the practicality test was carried out through teacher response questionnaires and student response questionnaires with an average assessment percentage of 96% in the very practical category, and to test effectiveness through a test of students' ability to understand mathematical concepts with an average student learning outcome of 81% in the category classically completed, and the observation results have an average assessment percentage of 95.7% in the very effective category. Thus it can be concluded that the student worksheets (LKPD) based on interactive multimedia on sequences and arithmetic series using the Discovery Learning model to improve the ability to understand mathematical concepts at X th Class students of SMA Negeri 6 Tanjungbalai are valid, practical and effective Keywords: Discovery learning, LKPD, interactive multimedia, ability to understand mathematical concepts
PENGEMBANGAN BAHAN AJAR BERBASIS REALISTIC MATHEMATICS EDUCATION BERBANTUAN APLIKASI GEOGEBRA TERHADAP KEMAMPUAN KOMUNIKASI MATEMATIS SISWA Dina Syahmila; Elfira Rahmadani
Diskrit: Jurnal Inovasi Pendidikan Matematika Vol. 3 No. 2 (2025): Juli 2025
Publisher : Program Studi Pendidikan Matematika, Universitas Asahan

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Tujuan penelitian ini untuk mengembangkan dan menghasilkan Bahan Ajar berbasis Realistic Mathematics Education berbantuan aplikasi Geogebra pada materi perbandingan trigonometri pada segitiga siku siku terhadap kemampuan komunikasi matematis siswa kelas X SMA Negeri 1 Air Joman. Jenis penelitian ini adalah penelitian pengembangan R&D (Research & Development) dengan menggunakan model 4D (Define, Design, Development, Disseminate). Hasil penelitian ini adalah Bahan Ajar berbasis Realistic Mathematics Education pada materi perbandingan trigonometri pada segitiga siku siku. Berdasarkan uji kevalidan dilihat dari hasil penilaian oleh validator yakni 2 dosen ahli dan 1 guru matematika dengan kategori sangat valid. Sedangkan uji kepraktisan yang dilakukan melalui angket respon guru dan angket respon siswa dengan kategori praktis, dan untuk uji keefektifan melalui tes kemampuan komunikasi matematis siswa dengan kategori sangat efektif. Sehingga dapat disimpulkan bahwa Bahan Ajar berbasis Realistic Mathematics Education berbantuan aplikasi Geogebra pada materi perbandingan trigonometri pada segitiga siku siku terhadap kemampuan komunikasi matematis siswa kelas X SMA Negeri 1 Air Joman valid, praktis, dan efektif.
Co-Authors Aidilla Fitria Sari Siregar Amanda Raina Sartika Anim anim anim Anim Anim Annisa Jalwa Br Panjaitan Cahyani Aprilia Candra Wahyudi Cindy Syaharani Damayanti, Elok Dina Syahmila E. Elvis Napitupulu Ely Syafitri Ely Syafitri Harniati - Lubis Ismail Hanif Batubara khairani sinaga Khairun Nisa KMS. Muhammad Amin Fauzi Lis Supiatman M Rifaldi Lubis Masroh Saragih Nilam Sari Nur Aisiyah Fazariah Nurul Indah Rahmadani PUTRI WULANDARI Rini Rini Sahat Saragih Sahat Saragih Sapta, Andy Sari, Dwi Novita sirait, Syahriani Sri Rahma Dewi Saragih Sri Rahmah Dewi Saragih sri rahmah Saragih Suci Ramayanti Sugeng Syahriani Sirait uci pra tiwi Vici Wirawati Vici Yen Aryni