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Yelli Ramalisa

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Author-ID : 2730151

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Model Interaksi Intraseluler antara Infeksi HIV dan Sistem Imun Ramalisa, Yelli
Jurnal Sains dan Matematika Vol. 1 No. 2 (2020): Jurnal Sain dan Matematika
Publisher : PMIPA FKIP UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.1234/sainmatika.v4i1.1598

Virus merupakan salah contoh organisme yang sering mengganggu pertumbuhan sel. Akhir-akhir ini keberadaan virus dirasa sangat mengganggu kehidupan manusia seperti halnya kasusÂ HIV. Dari kasus tersebut dirasa perlu untuk mempelajari infeksi HIV pada sel. Tujuan dari tesis ini adalah mengkontruksi model interaksi infeksi virus dan sistem imun, dan kemudian menganalisis kestabilan titik ekuilibrium dari model tersebut. Analisis kestabilan titik ekuilibrium dari model tersebut dilakukan dengan melihat kestabilan linearisasi disekitar titik ekuilibrium tersebut. Dari model tersebut diperoleh duaÂ titik ekuilibrium yaitu titik ekuilibrium non infeksi dan titik ekuilibrium infeksi. Titik ekuilibrium non infeksi untuk model iniÂ stabil asimtotik jika , dan tidak stabil jika .Â Â Titik ekuilibium infeksiÂ pada model ini Â ada jika Â danÂ stabil asimtotik. Â Kata kunci: Sistem, infeksi HIV, sistem imun, titik ekuilibrium Â

Analysis of Students’ Conceptual Understanding of Pythagorean Prerequisite Concepts Retno Ayu Wulandari; Yelli Ramalisa; Duano Sapta Nusantara
MATHEMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 8 No. 1 (2026): MATHEMA
Publisher : Universitas Teknokrat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33365/jm.v8i1.1143

This study aims to determine students' ability to understand the prerequisite material for Pythagorean concepts. The study was conducted using a descriptive qualitative approach. The subjects of this study were students of class VIII B at SMP Adhyaksa 1 in Jambi City. Data collection involved written tests, interviews, and documentation, followed by analysis through data reduction, data presentation, and the formulation of conclusions. Data analysis was conducted based on concept comprehension indicators, namely 1) restating a concept, 2) writing down concepts in various mathematical representations, 3) using certain procedures, and 4) applying a concept. Based on the findings, of the 14 students, 7 were classified as having low comprehension, 5 were categorized at a moderate level, and 2 students achieved a high level of comprehension. This shows that students' conceptual understanding abilities vary. The results of the study show that students' conceptual understanding of the prerequisite material on Pythagoras tends to be low, with 50% in the low category. Some students showed fairly good achievement in the indicators of restating concepts and representing concepts. However, students were still weak in the indicators of selecting and using specific procedures and applying concepts.

Desain E-Modul Berbasis Budaya Lokal Batik Jambi untuk Meningkatkan Keterampilan Proses Murid SMP Sari, Fitri Indah; Kamid, Kamid; Ramalisa, Yelli
JagoMIPA: Jurnal Pendidikan Matematika dan IPA Vol. 6 No. 1 (2026): 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.v6i1.3908

E-modul terintegrasi Batik Jambi dikembangkan untuk mengasah keterampilan proses matematis murid tingkat SMP. Produk ini dirancang dengan mengutamakan validitas, kepraktisan, dan efektivitas. Dalam mencapai tujuan tersebut, pendekatan Research and Development (R&D) dipilih dengan mengadopsi kerangka kerja ADDIE yang memuat lima fase berurutan, yakni Analisis, Perancangan, Pengembangan, Implementasi, dan Evaluasi. Partisipan dalam penelitian ini dipilih menggunakan teknik purposive sampling yang terdiri dari para validator yang ahli di bidang materi dan desain, seorang pendidik matematika, sembilan orang peserta didik yang terlibat dalam uji coba skala terbatas, serta 30 siswa kelas IX C dari SMP Negeri 24 Kota Jambi yang menjadi subjek uji coba lapangan. Pengumpulan data dilakukan melalui lembar validasi, angket kepraktisan, angket respons murid, serta soal tes keterampilan proses matematika. Hasil validasi ahli materi (86%) dan ahli desain (87%) tergolong “sangat valid”. Modul ini dinilai mudah diimplementasikan dengan perolehan skor 80% dari guru dan 83% dari siswa. Keefektifan produk terlihat dari peningkatan signifikan pada kemampuan proses matematis murid yang ditunjukkan dengan nilai N-Gain sebesar 0,74 tergolong tinggi, serta hasil angket respons siswa yang mencapai 86% dengan predikat sangat efektif. Seluruh indikator keterampilan proses meningkat pada kategori sedang. Dapat disimpulkan bahwa e-modul terintegrasi Batik Jambi direkomendasikan untuk dimanfaatkan sebagai bahan ajar kreatif guna mengembangkan keterampilan proses matematika murid, di samping turut menanamkan kecintaan terhadap warisan budaya daerah.

EKSPLORING JAMBI CULTURAL ELEMENTS IN DEVELOPING MATHEMATICS QUESTIONS THAT MEASURE THE COGNITIVE PSYCHOLOGY OF JUNIOR HIGH SCHOOL STUDENTS: Jambi, Indonesia Caesarani, Nabila Nasywa; Kamid; Yelli Ramalisa
Jurnal Math-UMB.EDU Vol. 13 No. 2 (2026): MARCH
Publisher : Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/math-umb.edu.v13i2.10092

This study was motivated by the importance of integrating local culture into mathematics learning and developing assessment instruments that can measure students’ cognitive psychology, particularly critical thinking skills. The objective of this study was to develop mathematics problems based on Jambi cultural elements and to analyze junior high school students’ critical thinking skills as part of cognitive psychology. This study employed a Research and Development (R&D) method using the ADDIE model, which consists of analysis, design, development, implementation, and evaluation stages. The subjects of this study were ninth-grade students of Junior High School 4 Jambi City. Data were collected through interviews, tests, and questionnaires. The developed instrument consisted of ten mathematics problems based on Jambi cultural contexts and six indicators of critical thinking, namely interpretation, analysis, inference, evaluation, explanation, and self-regulation. The results showed that the developed instrument met the validity and reliability criteria. The validation results indicated that the material aspect obtained a score of 86.4% and the design aspect obtained 89.8%, both categorized as very valid. The reliability test using Cronbach’s Alpha showed a value of 0.743, indicating that the instrument had sufficient reliability. The field test results showed that students’ critical thinking skills reached an average score of 70.1%, which is categorized as high. These findings indicate that mathematics problems based on Jambi cultural elements are feasible and effective to be used as an instrument to measure students’ critical thinking skills in mathematics learning. Keywords: Cognitve Psychology; Critical Thinking; Jambi Culture; ADDIE; SPLDV

ETHNOMATHEMATICS-BASED COGNITIVE ASSESSMENT MODEL FOR DYSCALCULIA STUDENTS: Jambi, Indonesia Rahayu, Gebby Kusuma; Kamid; Yelli Ramalisa
Jurnal Math-UMB.EDU Vol. 13 No. 2 (2026): MARCH
Publisher : Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/math-umb.edu.v13i2.10093

This research is motivated by the learning difficulties experienced by students with dyscalculia in mathematics, particularly in understanding numerical concepts and performing basic arithmetic operations. This study aims to develop an ethnomathematics-based cognitive assessment model using the traditional congklak game and question cards to assess students' cognitive abilities in learning mathematics. This study uses the Research and Development (R&D) method with the ADDIE model, which consists of five stages: Analysis, Design, Development, Implementation, and Evaluation. The research participants were six seventh-grade students with dyscalculia identified through a screening test. The developed model was tested with content validity and reliability tests. Content validity was validated by two experts, namely a subject matter expert and a media design expert, to evaluate the content and feasibility of the assessment model design. The results showed that the model achieved a validity score of 96.88% from the media expert and 93.75% from the subject matter expert, indicating that the product is valid. Furthermore, the reliability test using Inter-Rater Reliability (ICC) produced a value of 0.892, indicating very high reliability. These findings suggest that an ethnomathematics-based cognitive assessment model can be used as an alternative tool to assess the cognitive abilities of students with dyscalculia in adding and subtracting integers through culturally relevant learning activities. Keywords: Assessment cognitive; Ethnomathematics; Dyscalculia; Congklak

DEVELOPMENT OF ANIMATED VIDEO LEARNING MEDIA USE APPLICATION CANVA STEAM BASED FOR IMPROVING LEARNING OUTCOMES STUDENTS Ulfah, Nadia; Feri Tiona Pasaribu; Yelli Ramalisa
EMTEKA: Jurnal Pendidikan Matematika Vol. 7 No. 1 (2026)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/emteka.v7i1.9232

This research is motivated by the lack of technology integration in learning which results in students having difficulty understanding the material, and leads to low learning outcomes. An innovation is needed to support the learning process which is expected to improve student learning outcomes. Therefore, the purpose of this study is to develop and assess the quality of learning media in the form of animated videos using the STEAM-based Canva application to improve student learning outcomes in the Enumeration Rules material. This research is a type of R&D development research with the ADDIE model, which consists of five stages: analysis, design, development, implementation, and evaluation. The research subjects included one mathematics teacher and 35 students of class XI F1 of SMA Negeri 8 Muaro Jambi. The results showed that the developed media met the criteria of validity, practicality, and effectiveness. In terms of validation, the percentage of material feasibility reached 91.7% and the design reached 87.5%, which is classified as very valid. Meanwhile, the practicality of implementation , the teacher gave an assessment of 92% and students 90.9% which is also included in the very practical category. Meanwhile, the implementation of media effectiveness is seen from the student response questionnaire , which obtained a score of 88.42% in the very effective category. The results of the average difference test of student learning outcomes showed that the posttest score was better than the pretest score . The comparison results of the average N-Gain score of 0.65 with a percentage of 65% which is included in the fairly effective category. Thus, the STEAM-based animated video learning media using Canva is declared suitable for use in the learning process on the Enumeration Rules material for grade XI SMA because it meets the criteria of validity, practicality, and effectiveness. Penelitian ini dilatarbelakangi oleh kurangnya integrasi teknologi dalam pembelajaran, yang menyebabkan siswa kesulitan memahami materi dan mengakibatkan prestasi belajar rendah. Diperlukan inovasi untuk mendukung proses pembelajaran yang diharapkan dapat meningkatkan hasil belajar siswa. Oleh karena itu, tujuan dari penelitian ini adalah untuk mengembangkan dan menilai kualitas media pembelajaran berupa video animasi menggunakan aplikasi Canva berbasis pendekatan STEAM untuk meningkatkan hasil belajar siswa dengan topik Aturan Penghitungan. Penelitian ini merupakan jenis studi Penelitian dan Pengembangan (R&D) menggunakan model ADDIE, yang terdiri dari lima tahap: analisis, desain, pengembangan, implementasi, dan evaluasi. Subjek penelitian antara lain seorang guru matematika dan 35 siswa dari Kelas XI F1 SMA Negeri 8 Muaro Jambi. Hasil penelitian menunjukkan bahwa media yang dikembangkan memenuhi kriteria validitas, praktis, dan efektif. Dari segi validasi, persentase kelayakan material mencapai 91,7% dan desainnya mencapai 87,5%, keduanya tergolong sangat valid. Mengenai kepraktisan, guru memberikan peringkat 92% dan siswa memberikan 90,9%, keduanya termasuk dalam kategori sangat praktis. Sementara itu, efektivitas media, berdasarkan kuesioner respon siswa, memperoleh skor sebesar 88,42%, dikategorikan sangat efektif. Hasil uji coba sampel independen hasil belajar siswa menunjukkan bahwa nilai pasca tes lebih baik daripada nilai pra-tes. Perbandingan rata-rata skor N-Gain adalah 0,65, setara dengan 65%, yang dikategorikan sebagai cukup efektif. Dengan demikian, media pembelajaran video animasi berbasis STEAM yang dikembangkan menggunakan Canva dianggap layak untuk digunakan dalam pengajaran topik Aturan Penghitungan untuk siswa SMA Kelas XI karena memenuhi kriteria validitas, kepraktisan, dan efektivitas

Co-Authors . Apriansyah Agustinawati, Putri Lovia Ariefah, Hana Arta Rajasha Herlambang Arta Rajasha Herlambang Azzikra Febriyanti Bella Arisha Caesarani, Nabila Nasywa CUT MULTAHADAH Dewi Iriani Duano Sapta Nusantara Dwi Agus Kurniawan Elza Triani Erna Erna, Erna Evia Anjarwati Fadillah, Agus Feri Tiona Pasaribu Fitri Indah Sari Frisky Rapika Dwi Frisky Rapika Dwi Geni Puspita Gurstiningsi, Tria Gustinigsi, Tria HAFIZAH, UMI Ilham Falani Jefri Marzal Junita, Ranisa Kamid, Kamid Khairul Alim Kurniawan, Dwi Agus Leony Margaretha Leony Margaretha Melanda, Melanda Muhammad Adi Saputra Nabilah, Balqis Saffanah Nabilla, Hanif Alyaa Naufal Aqila Kusnadi Ningsih, Irma Widya Nizlel Huda Noor Fajriah, Noor novferma, novferma Oktavia, Sri Wina Perdana, Rahmat Prameswari, Nirmala Putri, Fhadira Insani Rahayu, Gebby Kusuma Rahmat Perdana Ramadhan, Nurul Izzati Rani Iani Rahmadani Putri Retno Ayu Wulandari Rina Kusuma Dewi Rita Ningsih, Rita Rivani, Putri Ayu Rohati Rohati Rohati Romundza, Febbry Sabila Eka Septi Sainuddin, Syamsir Saputri, Sindi Eka Simatupang, Gugun M Sofnidar - Sri Muslimatul Husna Sufri Sufri Sufri Sufri Syaiful . Syaiful Syaiful Tria Gustiningsi TRIANI, ELZA Ulfah, Nadia Wardi Syafmen Widodo, Rido Ilham Widyaningrum, Indira Maisyrisa Yuliana Safitri

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