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All Journal Al-Ijtima`i: International Journal of Government and Social Science Beta: Jurnal Tadris Matematika Jurnal Suara Keadilan JP2M (Jurnal Pendidikan dan Pembelajaran Matematika) Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Pengabdian UNDIKMA Industrika : Jurnal Ilmiah Teknik Industri Prosiding University Research Colloquium Jurnal Pengabdian Masyarakat Sains dan Teknologi Jurnal Keilmuan dan Keislaman JURNAL INOVASI TEKNIK INDUSTRI Kesejahteraan Bersama : Jurnal Pengabdian dan Keberlanjutan Masyarakat Jurnal Sumber Hukum TECHNOLOGIC
Wibowo, Eko Ari
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IMPLEMENTASI “GOOD FAITH” PADA PERJANJIAN KERJASAMA ANTARA PERUSAHAAN BEDA NEGARA Cahyaningtyas, Kartika; Wibowo, Eko Ari
JURNAL SUMBER HUKUM Vol 1 No 1 (2023): JURNAL SUMBER HUKUM
Publisher : LPPM institut Teknologi Bisnis AAS Indonesia

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Abstract

This research examines and analyzes international contracts that do not fulfill the principle of good faith or in Indonesian means Good Faith because the agreement made by the parties is not reached, then there can be disputes between the parties who made the agreement and there could be parties who suffer losses if it arises. the dispute. The legal remedies chosen by the parties making the agreement must be stated in the contents of the agreement. The method used in normative research with a problem approach is the case approach. The research results in the form of Cooperation Agreements between companies from different countries have not implemented the principle of "good faith" in post-contracts in the form of implementing "good faith" so that disputes occur. The legal remedy chosen was also not implemented properly, even though the settlement option came from an agreement stated in the agreement through the Indonesian National Arbitration Board (BANI). It is reasonable to suspect that this settlement option is not pure but because in international contracts the settlement is usually through the Indonesian National Arbitration Board (BANI). The result is that one of the parties feels disadvantaged. Keywords : International Contracts, Good Faith, Indonesian National Arbitration Board (BANI)
ANALISIS KUALITAS BUTIR SOAL ASESMEN SUMATIF AKHIR SEMESTER GENAP PELAJARAN MATEMATIKA MI Wibowo, Eko Ari; Sabrina, Dalila; Laili, Risalah Nur; Sutarni, Sri; Hidayati, Yulia Maftuhah
JP2M (Jurnal Pendidikan dan Pembelajaran Matematika) Vol 12, No 1 (2026)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jp2m.v12i1.8522

Abstract

Assessment of learning outcomes is an essential aspect in the learning process to measure students' competency achievement. This study aims to analyze the quality of summative assessment questions at the end of the even semester in Mathematics at Madrasah Ibtidaiyah (MI). The analysis was carried out on five main aspects: validity, reliability, level of difficulty, discriminatory power, and distractor effectiveness. The study used a descriptive quantitative approach with data obtained from question documents, answer keys, and answer sheets of grade V students (n = 26). Data analysis techniques included point biserial correlation for validity testing, Cronbach's Alpha for reliability, and classical formulas for level of difficulty, discriminatory power, and distractor effectiveness. The results showed that 64% of the questions were valid, the reliability of the questions was quite high (α = 0.78), 40% of the questions were categorized as moderate difficulty, and 60% had good to very good discriminatory power. However, there were 36% of questions that were invalid and some distractors did not function optimally. These findings indicate that the quality of the questions is generally quite good, but revisions need to be made to less than optimal question items to improve the effectiveness of the assessment.
Students’ conceptual difficulties in learning curved-surface solids: The needs for RME-based interactive e-module Santosa, Yoga Tegar; Mahmudah, Mutiara Hisda; Wibowo, Eko Ari
Beta: Jurnal Tadris Matematika Vol. 19 No. 1 (2026): Beta May
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/betajtm.v19i1.737

Abstract

[English]: This study aims to identify students’ difficulties in learning curved-surface solids, analyze the key aspects of their conceptual understanding, and explore their needs regarding content and digital features for an RME-based e-module. A mixed-method approach with a sequential explanatory design was employed. The participants consisted of 94 ninth-grade students from a private junior high school in Surakarta, Indonesia. Data were collected using a questionnaire as well as in-depth interviews. Quantitative data were analyzed descriptively, while qualitative data were processed through reduction, display, and conclusion drawing. The findings reveal that students continue to struggle with visualizing three-dimensional shapes, understanding the structure and use of formulas for volume and surface area, and identifying components of curved-surface solids. Their conceptual understanding falls within the “moderate” category, with noticeable uncertainty in explaining, connecting, and applying concepts. Moreover, students require content that offers deeper conceptual explanations, step-by-step procedural examples, and contextualized exercises, highlighting the need for integrating the RME approach into the e-module. They also expect digital features such as 3D visualizations, tutorial videos, interactive object manipulation, and automated assessments. [Bahasa]: Penelitian ini bertujuan untuk mengidentifikasi kesulitan belajar dan menganalisis pemahaman konsep siswa pada materi bangun ruang sisi lengkung, serta mengeksplorasi kebutuhan mereka terhadap konten dan fitur e-module sebagai landasan pengembangan e-module berbasis realistic mathematics education (RME). Penelitian ini menggunakan pendekatan mixed-method dengan desain sequential explanatory. Partisipan terdiri atas 94 siswa kelas IX dari salah satu SMP swasta di Kota Surakarta, Indonesia. Data diperoleh melalui angket dan wawancara mendalam. Analisis data kuantitatif dilakukan secara deskriptif, sedangkan data kualitatif dianalisis melalui proses reduksi, penyajian, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa siswa masih mengalami kesulitan dalam memvisualisasikan bentuk tiga dimensi, memahami struktur dan penerapan rumus volume serta luas permukaan, serta mengidentifikasi komponen bangun ruang sisi lengkung. Pemahaman konsep siswa berada pada kategori cukup dengan kecenderungan ketidakpastian dalam menjelaskan, menghubungkan, dan menerapkan konsep. Selain itu, siswa membutuhkan konten berupa penjelasan konseptual yang mendalam, contoh prosedural bertahap, dan latihan kontekstual yang menunjukkan perlunya integrasi pendekatan RME pada e-module. Siswa juga mengharapkan fitur digital seperti visualisasi 3D, video tutorial, manipulasi objek interaktif, dan asesmen otomatis.
Co-Authors Ardiyansah, Reza Arfin Sudirman Astuti, Dyah Puji Budi Murtiyasa Chanafi, Galih Tri Dicasani, Alifta Ernawati Ernawati Fadhi, Wildan Afdalul Hamdi, Lazuardi Fatahilah Harun Joko Prayitno Haryanti, Rusiana Sri Hidayah, Muhammad Nur Wahyu Ida Betanursanti Irawan, Danu Jauhari, Kun Ihza Kartika Cahyaningtyas Kaswadi, Agung Laili, Risalah Nur Mahmudah, Mutiara Hisda Mairina, Upik Manurung, Vuko Arief Tua Maulida, Dini Wardani Munandar, Galih Mahardika Muradi - Mutoharoh, Siti Nining Setyaningsih Nur Rochaeti, Nur Pamungkas, Krisna Adhi Puspitasari, Anis Fadila Rahmawati, Nabila Fitri Ramdani, Selfiana Putri Rusdijanto, Titania Alya Sabrina, Dalila Santosa, Yoga Tegar Shohenuddin, Shohenuddin Sri Sutarni Suciana, Fitri Sukowati, Berliani Ardelia Sumarni, S Suroto Suroto Triantoro, Viko Wahyu Wanda Wanda Warastri, Puji WIDYASTUTI Widyastuti Widyastuti Widyastuti Widyastuti Yulia Maftuhah Hidayati