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All Journal SEPREN: Journal of Mathematics Education and Applied Humantech : Jurnal Ilmiah Multidisiplin Indonesia
Hura, Paguita
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Religion Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Law, Crime, Criminology & Criminal Justice Mathematics Public Health Other

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IDENTIFIKASI KESALAHAN JAWABAN SISWA KELAS VII SMP DALAM MEMECAHKAN SOAL MATEMATIKA PADA MATERI DERET GEOMETRI Ambarita, Boreki; Hura, Paguita; Frisnoiry, Suci; Simanullang, Tria Angrelina
Humantech : Jurnal Ilmiah Multidisiplin Indonesia Vol. 2 No. 8 (2023): Humantech : Jurnal Ilmiah Multidisiplin Indonesia
Publisher : Program Studi Akuntansi IKOPIN

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Abstract

Tujuan dari penelitian ialah untuk mengidentifikasi jenis kesalahan yang dilakukan siswa serta faktor penyebab dalam memecahkan soal materi deret geometri. Jenis penelitian yang dilakukan merupakan penelitian kualitatif deskriptif, yaitu menggunakan metode Studi Kasus dengan tujuan peneliti yang ingin mengkaji secara mendalami mengenai faktor-faktor yang menyebabkan kesalahan siswa dalam menyelesaikan soal deret geometri. Data yang diperoleh dari hasil penelitian ini adalah dari tes soal yang berikan siswa secara online. Teknik pengumpulan data dilakukan melalui pemberian tes soal yang telah dibuat oleh peneliti. Dalam penelitian ini, peneliti menggunakan triangulasi teknik. Kesalahan yang dilakukan siswa meliputi kesalahan konsep, kesalahan prosedural, dan kesalahan operasi bilangan. Hasil dalam penelitian ini yaitu terdapat faktor-faktor yang menyebabkan siswa melakukan kesalahan yaitu kesalahan konsep, procedural, serta kesalahan dalam operasi.
Pengembangan LKPD Digital Berbasis Realistic Mathematics Education Untuk Meningkatkan Kemampuan Literasi Matematis Siswa Hura, Paguita
Sepren Vol 7 No 01 (2025): Edisi November 2025
Publisher : Prodi Pendidikan Matematika FKIP Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sepren.v7i01.1927

Abstract

This research aims to develop and assess the quality of a digital student worksheet (LKPD) based on the Realistic Mathematics Education (RME) approach in terms of validity, practicality, effectiveness, and its impact on students’ mathematical literacy skills. The study employs the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation) and involves seventh-grade students (Class VII-9) at SMP Negeri 29 Medan as research subjects. The instruments used include questionnaires and tests. The research findings indicate that: (1) the digital LKPD is considered valid, with validation scores of 3.96 from material experts (categorized as very valid) and 4.11 from media experts (categorized as valid); (2) the LKPD is rated as highly practical by teachers (87.27%) and students (90.20%); (3) the LKPD is effective, as evidenced by: (a) a classical completeness rate of 90.63%; (b) individual learning objective achievement rate of 83.94%; (c) a positive student response rate of 89.17%; and (d) an increase in the average pretest score from 41.41 to 83.94 for mathematical literacy indicators. The overall average literacy score improved from 43.06 (pretest) to 75.00 (posttest), with an N-Gain score of 0.72, classified as high. These findings indicate that the RME-based digital LKPD is feasible and effective for enhancing students' mathematical literacy skills at the junior high school level.
Co-Authors Ambarita, Boreki Simanullang, Tria Angrelina Suci Frisnoiry