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NETTI KARIANI MENDOFA

UNIVERSITAS NIAS

Author-ID : 5497553

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Pengembangan LKS Berbasis Missouri Mathematics Project (MMP) untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Siswa SMP Zalukhu, Junitariang; Mendrofa, Ratna Natalia; Telaumbanua, Yakin Niat; Mendrofa, Netti Kariani
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 7, No 5 (2025): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v7i5.24618

Penelitian ini dilatarbelakangi observasi dan pemberian tes awal di SMP Negeri 6 Lahewa, yang menunjukkan kemampuan pemecahan masalah matematis siswa kelas VIII masih sangat kurang dan bahan ajar yang digunakan masih terbatas, kurangnya kemandirian belajar, dan siswa yang kesulitan memahami dan menjawab soal matematika sehingga menyebabkan siswa tidak terlibat aktif dalam proses pembelajaran. Solusi dari permasalahan tersebut adalah dengan menggunakan bahan ajar berupa LKS yang sederhana, sehingga mudah dipahami oleh siswa. Tujuan dari penelitian ini adalah untuk mengembangkan LKS berbasis Missouri Mathematics Project (MMP) yang valid, praktis dan efektif untuk meningkatkan kemampuan pemecahan masalah matematis siswa. Jenis penelitian ini adalah pengembangan. Model pengembangan yang digunakan adalah model ADDIE, yang terdiri atas lima tahapan yaitu analysis, design, development, implementation, dan evaluation. Instrumen dalam penelitian ini adalah tes hasil belajar, angket validasi ahli materi, bahasa, desain, angket respon guru dan siswa. Jenis data yang digunakan dalam penelitian ini adalah data kualitatif dan data kuantitatif. Data kualitatif berupa komentar dan saran yang diberikan terhadap LKS yang dikembangkan. Data kuantitatif berupa hasil angket dari validator, angket respon siswa, angket respon guru dan tes hasil belajar. Berdasarkan hasil penelitian, LKS yang dikembangkan telah teruji dan dinyatakan valid baik dari segi validitas materi (isi), validitas bahasa, dan validitas desain. Selanjutnya, LKS juga sangat praktis digunakan oleh siswa dengan persentase kepraktisan sebesar 86,86% dan hasil persentase kepraktisan dari guru sebesar 97,27%. LKS yang dikembangkan juga efektif untuk meningkatkan kemampuan pemecahan masalah matematis siswa dengan nilai rata-rata 85,00 dan berada pada kategori sangat baik dan persentase ketuntasan klasikal sebesar 86,36% berkategori sangat efektif. Sehingga dapat disimpulkan bahwa LKS yang dikembangkan sudah memenuhi harapan atau tujuan penelitian.

Pengembangan Modul Pembelajaran Matematika Berbasis Self Regulated Learning Untuk Meningkatkan Kemampuan Berpikir Kritis Siswa UPTD Smp Negeri 1 Mandrehe Barat Zebua, Syukur Marno Life; Mendrofa, Netti Kariani; Mendrofa, Ratna Natalia; Telaumbanua, Yakin Niat
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 7, No 5 (2025): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v7i5.24613

Students' critical thinking skills in mathematics learning are still low and need to be addressed immediately, particularly at UPTD SMP Negeri 1 Mandrehe Barat. This is influenced by the limited availability of learning materials. As a solution, a Self Regulated Learning (SRL)-based module was developed to encourage independent, reflective, and gradual learning to enhance students' critical thinking skills. This study aims to develop a mathematics learning module based on SRL that is valid, practical, and effective in improving students’ critical thinking skills. This research is a development study using the Plomp model, which consists of three phases: preliminary investigation, prototyping phase, and assessment phase. The instruments used in this research include learning outcome tests, validation questionnaires, and student and teacher response questionnaires. The types of data used in this study are qualitative and quantitative. Qualitative data consist of comments and suggestions from validators regarding the developed module. Quantitative data consist of validation scores, student and teacher responses, and critical thinking test results after using the developed learning material. The results showed that the developed module was highly valid, with validation scores from subject matter expert I at 92%, expert II at 93%, language expert at 82.5%, and design expert at 90%. The module was also considered highly practical, with student response at 90.4% and teacher response at 95%. Furthermore, the module was effective in improving students’ mathematical problem-solving skills, with an average score of 76.34 (moderate category) and classical completeness of 88.46% (very effective category). It can be concluded that the developed SRL-based learning module meets the objectives of the study.

Pengembangan Modul Pembelajaran Matematika Berbasis Problem Based Learning Siswa SMP Negeri 3 Bawolato Bawamenewi, Eniman; Lase, Sadiana; Telaumbanua, Yakin Niat; Mendrofa, Netti Kariani
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 7, No 5 (2025): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v7i5.24617

This research was motivated by findings in the problem limitation, namely that students' mathematics learning outcomes had not yet reached the Minimum Mastery Criteria (KKM). Many students considered mathematics to be difficult and boring, and the lack of instructional materials contributed to the ineffectiveness of the learning process. To overcome this issue, a mathematics learning module based on the Problem Based Learning (PBL) model was developed to enhance students' active involvement. This study aims to develop a module that is valid, practical, and effective for use in junior high school mathematics instruction. The research adopted the ADDIE development model, which consists of five stages: Analysis, Design, Development, Implementation, and Evaluation. The instruments used in this study included validation questionnaires, practicality questionnaires, effectiveness questionnaires, and learning outcome tests. The subjects of the research were one mathematics teacher and eighteen Grade VIII students at SMP Negeri 3 Bawolato. The data collected consisted of both quantitative and qualitative data. The validation results indicated that the module was highly valid, with a score of 91.6% from the content expert, 88.8% from the language expert, and 87.5% from the design expert. The module was considered highly practical based on the teacher's response (92.5%) and students' response (89.8%). The module's effectiveness was demonstrated by an increase in students’ learning outcomes, from an average score of 25.67 (low category) to 84.55 (very good category). Thus, the mathematics module based on the Problem-Based Learning model meets the criteria of validity, practicality, and effectiveness, and is suitable for use in mathematics learning at the junior high school level.

Pengembangan Multimedia Interaktif pada Pembelajaran Matematika untuk Meningkatkan Minat dan Hasil Belajar Siswa Kelas VII SMP Negeri 2 Lotu Gea, Harapan; Mendrofa, Ratna Natalia; Mendrofa, Netti Kariani; Lase, Sadiana
JagoMIPA: Jurnal Pendidikan Matematika dan IPA Vol. 5 No. 4 (2025): JagoMIPA: Jurnal Pendidikan Matematika dan IPA
Publisher : Yayasan Pendidikan Bima Berilmu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53299/jagomipa.v5i4.2667

Matematika merupakan mata pelajaran yang terpenting dikuasai oleh siswa di sekolah. Namun kenyataanya siswa SMP Kelas VII SMP Negeri 2 Lotu mengalami hambatan dalam proses pembelajaran karena keinginan siswa untuk belajar matematika sangat kurang. Sehingga minat dan hasil belajar siswa berkategori cukup. Penelitian ini bertujuan untuk mengembangkan dan menghasilkan produk berupa multimedia interaktif pada pembelajaran matematika untuk meningkatkan minat dan hasil belajar siswa yang valid, praktis dan efektif. Jenis penelitian ini merupakan penelitian pengembangan dengan menggunakan model 4-D (Define, Design, Development, Desseminate). Penelitian dilakukan di SMP Negeri 2 Lotu, di kelas VII pada semester genap tahun ajaran 2024/2025. Instrumen penelitian yang digunakan adalah pedoman wawancara, lembaran angket dan soal tes. Data yang diperoleh dianalisis menggunakan teknik analisis data kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa kualitas multimedia interaktif pada pembelajaran matematika untuk meningkatkan minat dan hasil belajar siswa memiliki kategori sangat valid oleh ahli materi I dengan persentase 94,74%, ahli materi II dengan persentase 93,42% dan ahli media dengan persentase 98%, serta ahli bahasa dengan persentase 95,45%. Selanjutnya, multimedia interaktif juga sangat praktis dengan rata-rata hasil persentase kepraktisan sebesar 93,18% dan persentase keefektifan dari hasil pengolahan angket minat sebesar 87% dan hasil pengolahan tes hasil belajar siswa dengan rata-rata 81,30. Dari hasil penelitian di atas, maka pengembangan multimedia interaktif pada pembelajaran matematika untuk meningkatkan minat dan hasil belajar siswa kelas VII SMP Negeri 2 Lotu dinyatakan sudah memenuhi harapan atau tujuan penelitian.

Pengaruh Model Pembelajaran Collaborative Learning Terhadap Kemampuan Berpikir Reflektif Siswa SMP Negeri 1 Hiliduho Mendrofa, Ignasius; Telaumbanua, Yakin Niat; Mendrofa, Ratna Natalia; Mendrofa, Netti Kariani
Indo-MathEdu Intellectuals Journal Vol. 6 No. 6 (2025): Indo-MathEdu Intellectuals Journal (In-Press)
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v6i6.4141

This research is based on the results of a preliminary study conducted by researchers at SMP Negeri 1 Hiliduho. The problems identified were: (1) insufficient variety of classroom learning models and (2) students' lack of reflective thinking skills in solving mathematics problems. The purpose of this study was to determine the effect of the Collaborative Learning model on students' reflective thinking skills at SMP Negeri 1 Hiliduho. This quantitative study used a quasi-experimental method with a pretest-posttest control group design. The population was eighth-grade students, and the sample consisted of two classes: VIII-A as the experimental class and VIII-C as the control class. The instrument used was a descriptive test of reflective thinking skills. The research results obtained based on one-way hypothesis testing yielded a calculated t value of 4,628 and a t value of 2.024. Since t value > t value, or 4,628 > 2.024, H0 is rejected and Ha is accepted, meaning "there is an effect of the Collaborative Learning model on students' reflective thinking skills.

Pengembangan Modul Pembelajaran Berbasis Project Based Learning Untuk Meningkatkan Kemampuan Pemecahan Masalah Matematis Siswa SMP Negeri 1 Hiliduho Mendrofa, Versily; Mendrofa, Netti Kariani; Mendrofa, Ratna Natalia; Lase, Sadiana
Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences Vol. 4 No. 3 (2025): Matematika, IPA, dan Pembelajarannya
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/venn.v4i3.345

Mathematical problem-solving ability is one of the essential competencies that students must master. However, initial observations at SMP Negeri 1 Hiliduho revealed that students’ problem-solving skills are still relatively low, and Project Based Learning (PjBL)-based teaching materials have not yet been applied in the school. This study aims to develop a PjBL-based instructional module that is valid, practical, and effective in improving students’ mathematical problem-solving ability. The research was conducted using a development approach with the ADDIE model, which includes five stages: analysis, design, development, implementation, and evaluation. Research instruments consisted of expert validation questionnaires, practicality questionnaires for teachers and students, and a problem-solving test. The data collected were both qualitative and quantitative. Qualitative data were obtained from comments, suggestions, and feedback provided by validators, while quantitative data were derived from the results of validation scores, teacher and student responses, and students’ test results. The research findings showed that the developed learning module was highly valid, as evidenced by validation scores of 98% and 99% from two content experts, 96% from the language expert, and 98% from the design expert. The module was also considered highly practical, with a score of 90.63% from students and 93% from the teacher. Furthermore, the module proved effective in enhancing students’ mathematical problem-solving skills, with an average score of 80.25 (high category) and classical completeness of 83.33% (high category). In conclusion, the PjBL-based module developed in this study fulfilled the criteria of validity, practicality, and effectiveness, thus supporting the achievement of learning objectives.

Pengembangan Modul Pembelajaran Berbasis Problem Based Learning dalam Kurikulum Merdeka Untuk Meningkatkan Kemampuan Berpikir Kritis Siswa Hulu, Friska Putri Magdalena; Mendrofa, Ratna Natalia; Mendrofa, Netti Kariani; Telaumbanua, Yakin Niat
Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences Vol. 4 No. 3 (2025): Matematika, IPA, dan Pembelajarannya
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/venn.v4i3.349

Initial observations at SMP Negeri 3 Alasa Talumuzoi revealed that students’ critical thinking skills were very low, and the available teaching materials were limited and highly dependent on the teacher. To address these issues, this study aimed to develop a problem-based learning (PBL) module that is valid, practical, and effective in improving students’ critical thinking skills. The research employed a development design using the ADDIE model, which includes five stages: analysis, design, development, implementation, and evaluation. Data collection instruments comprised learning outcome tests, validation questionnaires from material, language, and design experts, as well as teacher and student response questionnaires. Both quantitative and qualitative data were analyzed: quantitative data included validator scores, student and teacher responses, and learning outcomes, while qualitative data consisted of comments and suggestions on the developed module. The results demonstrated that the PBL module met validity criteria for content, language, and design. It was highly practical, with a student practicality score of 96% and a teacher practicality score of 92.8%. Furthermore, the module effectively improved students’ critical thinking skills, achieving an average score of 80.20%, categorized as very high, and a classical mastery percentage of 91.66%, categorized as very effective. In conclusion, the developed problem-based learning module fulfilled the research objectives and provides a reliable, practical, and effective tool for enhancing students’ critical thinking skills in mathematics.

Pengembangan Modul Pembelajaran Matematika Berbasis Problem Posing untuk Meningkatkan Kemampuan Berpikir Kreatif Siswa Hulu, Mitra Verolina; Mendrofa, Ratna Natalia; Mendrofa, Netti Kariani; Telaumbanua, Yakin Niat
Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences Vol. 4 No. 3 (2025): Matematika, IPA, dan Pembelajarannya
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/venn.v4i3.350

This study was motivated by observations at UPTD SMP Negeri 1 Gunungsitoli Selatan, which indicated that students’ creative thinking skills were very low and the available teaching materials were limited. Students often struggled to understand the material and relied heavily on the teacher, highlighting the need for more effective learning resources. The purpose of this research was to develop a Problem Posing-based learning module that is valid, practical, and effective in enhancing students’ creative thinking skills. This study employed a development research design using the ADDIE model, comprising analysis, design, development, implementation, and evaluation stages. Data were collected using learning outcomes tests, validation questionnaires, and student response questionnaires, encompassing both quantitative and qualitative data. Quantitative data included validator scores, student responses, teacher feedback, and learning outcomes, while qualitative data comprised comments and suggestions from validators. The results showed that the developed module met validity criteria for content, language, and design. It was highly practical, with student practicality at 91.18% and teacher practicality at 96.42%. Furthermore, the module effectively improved students’ creative thinking, achieving an average score of 81.56%, categorized as very creative. In conclusion, the Problem Posing-based learning module successfully fulfilled the research objectives, providing a reliable, practical, and effective tool to support the development of students’ creative thinking skills in mathematics.

Analisis Penggunaan Quizizz sebagai Media Kuis pada Perkuliahan Geometri Transformasi Mendrofa, Netti Kariani; Mendrofa, Ratna Natalia
Kognitif: Jurnal Riset HOTS Pendidikan Matematika Vol. 5 No. 3 (2025): July - September 2025
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/kognitif.v5i3.3743

Mahasiswa sering mengalami kesulitan dalam memahami konsep-konsep geometri transformasi karena sifatnya yang abstrak dan menuntut kemampuan berpikir visual serta logis. Penelitian ini bertujuan untuk mengkaji peningkatan pemahaman konsep dan motivasi belajar mahasiswa setelah penggunaan platform Quizizz sebagai media kuis dalam pembelajaran geometri transformasi. Jenis penelitian ini merupakan deskriptif kuantitatif dengan desain penelitian adalah one-group pretest-posttest design. Data dianalisis menggunakan statistik deskriptif dengan perbandingan skor sebelum dan sesudah perlakuan. Subjek penelitian ini adalah 40 mahasiswa Program Studi Pendidikan Matematika di Universitas Nias. Instrumen yang digunakan meliputi tes uraian dan angket. Temuan penelitian menunjukkan adanya peningkatan skor rata-rata dari 48,40 pada pretest menjadi 86,50 pada posttest. Mahasiswa juga menunjukkan peningkatan motivasi dan keterlibatan belajar setelah penggunaan Quizizz. Temuan ini menunjukkan potensi penggunaan Quizizz sebagai media kuis yang mendukung pembelajaran matematika secara lebih interaktif dan bermakna. Penelitian ini berkontribusi pada pengembangan strategi evaluasi formatif berbasis teknologi dalam pendidikan matematika.

Efektivitas Model Connected Mathematics Project Terhadap Kemampuan Koneksi Matematis Siswa Ditinjau Dari Kemampuan Awal Gulo, Irwan Krisman; Mendrofa, Netti Kariani; Lase, Sadiana; Mendrofa, Ratna Natalia
Venn: Journal of Sustainable Innovation on Education, Mathematics and Natural Sciences Vol. 4 No. 3 (2025): Matematika, IPA, dan Pembelajarannya
Publisher : Pusat Studi Bahasa dan Publikasi Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53696/venn.v4i3.346

Penelitian ini dilatar belakangi berdasarkan hasil studi pendahuluan yang dilakukan peneliti di UPTD SMP Negeri 1 Moro’o. Ditemukan masalah yaitu (1) kemampuan koneksi matematis siswa masih kurang (2) kemampuan awal siswa belum optimal. Tujuan penelitian ini adalah untuk mengetahui efektifitas connected mathematics project terhadap kemampuan koneksi matematis ditinjau dari kemampuan awal UPTD SMP Negeri 1 Moro’o. Populasi penelitian ini adalah kelas VIII dan sampel penelian terdiri dari dua kelas yaitu kelas VIII-A sebagai kelas eksperimen dan kelas VIII-B sebagai kelas kontrol di UPTD SMP Negeri 1 Moro’o yang berjumlah 57 siswa. Teknik pengambilan sampel dilakukan dengan teknik Nonprobability sampling. Jenis penelitan ini adalah kuantitatif dengan metode penelitian eksperimen semu (quasi eksperimen design), dan instrumen penelitian ini berbentuk uraian kemampuan koneksi matematis siswa. Hasil rata-rata tes dari kelas eksperimen diperoleh sebesar 71,75 dan kelas kontrol sebesar 59,57. Hasil ini menunjukan adanya peningkatan kemampuan koneksi matematis siswa yang dilihat dari rata-rata tes awal kelas eksperimen diperoleh sebesar 50,24 dan kelas kontrol sebesar 46,14. Dengan demikian, penggunaan model Connected Mathematics Project secara tepat oleh guru dan siswa dapat meningkatkan kemampuan koneksi matematis secara aktif, kreatif, dan kontekstual.

Co-Authors Abdir Aldin Gulo Gulo Amin Otoni Harefa Anastasia Aprilianis Gulo Anna Fertika Zalukhu Arikasian Zendrato Arozatulo Bawamenewi Baso Intang Sappaile, Baso Intang Basri, Teuku Hasan Bawamenewi, Eniman Bornok Sinaga Dewi Sani Zalukhu Edi Surya, Edi EDI SYAHPUTRA Edi Syahputra Eka Septianti Laoli elmanani simamora Elmanani Simamora Ester Primajuni Zebua FERDY SETIAWAN LAHAGU Gea, Harapan Gulo, Devi Ratna Sari Gulo, Irwan Krisman Hadi Prayitno Hafiz, Asnal Hanafiah Hanafiah, Hanafiah Hanum, Gilang Kartika Harefa , Amin Otoni Harefa, Agnes Renostini HERMAN WIJAYA MENDROFA Hernita Pasongli Hulu, Friska Putri Magdalena Hulu, Krisnatal Hulu, Mitra Verolina Husain, Husriani Izwita Dewi Juwinta, Indah Kasuari Gulo Laia, Wasnidar Larosa, Muspardin Lase, Lisa Desi Mawati Lubis, Tsuwaibatul Aslamiyah Mendofa, Juvita Sri Kasrina Mendrofa, Ignasius Mendrofa, Ratna Natalia Mendrofa, Versily Mubarok, Ahmad Muhammad Yusup Mustofa Mustofa Ndruru, Jenni Indah Mitra Nisak, Sayida Khoiratun Oktosiyanti MT. Abdullah, Oktosiyanti MT. Rahmani, Anggi Reformasi Zega Riana Riana Rido Eli Gulo Sadiana Lase Samputri, Salma SEPRIMAN LAOLI Solly Aryza Supendi, Dede Syawal Gultom TELAUMBANUA, RESTI JULIANA Telaumbanua, Yakin Niat Waruwu, Nini Suryani Windi Diantari Telaumbanua Yanida Bu’ulolo Yaredi Waruwu Yarman Sia Harefa Yasriuddin, Yasriuddin YOSANA HULU Yudika Zalukhu Yulisman Zega Zai, Firman Pikir Zalukhu, Junitariang Zebua, Amin Kristin Zebua, Ikke Afdolitha Zebua, Kasihani Zebua, Niscayarida Kristin Zebua, Soniat Mekartini Zebua, Syukur Marno Life Zega, Desman Anugrah Zega, Esther Purnama Sari Zendrato, Martalena Susanti Zendrato, Pniel Sozawato

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