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Mulyana
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Improving Students' Ability to Understand Multiplication and the Composition Method at MI Negeri 40 Pidie Using the Demonstration Method Mulyana; Ernawati
Jurnal Pendidikan Profesi Guru Vol. 3 No. 2 (2025): JULY 2025
Publisher : Program Studi Pendidikan Profesi Guru Fakultas Tarbiyah dan Keguruan UIN Ar-Raniry Banda Aceh

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Abstract

This classroom action research aimed to improve students’ ability to understand multiplication and the composition method through the application of the demonstration method at MI Negeri 40 Pidie. The research was conducted in two cycles, each consisting of the stages of planning, implementation, observation, and reflection. The subjects of this study were 26 fifth-grade students, including 14 boys and 12 girls. Data were collected through observation, tests, interviews, and documentation, and analyzed using both qualitative and quantitative descriptive methods. The results revealed that the demonstration method significantly improved students’ understanding of multiplication and number composition. Before the implementation, only 48% of students achieved the minimum mastery criterion (70). After the first cycle, this number increased to 72%, and in the second cycle, it reached 92%. The improvement occurred because the demonstration method enabled students to observe concrete examples, manipulate learning materials directly, and engage in hands-on learning that fostered conceptual understanding. Moreover, students became more active, motivated, and confident in solving multiplication problems. In conclusion, the use of the demonstration method proved effective in enhancing both cognitive achievement and learning engagement among students in mathematics learning at the elementary level.
Studi Eksperimental Kuat Tekan Beton dengan Substitusi Limbah Granit dan Abu Bonggol Jagung serta Penambahan Sikacim Mulyana; Agyanata Tua Munthe
Jurnal Studi dan Aplikasi Teknik Sipil (JSATS) Vol. 1 No. 2 (2025): Agustus
Publisher : Marasofi International Media and Publishing (MIMP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64123/jsats.v1.i2.1

Abstract

Permintaan terhadap beton ramah lingkungan mendorong pemanfaatan limbah sebagai bahan substitusi dalam campuran beton. Penelitian ini bertujuan mengevaluasi pengaruh penggunaan limbah granit sebagai substitusi agregat kasar dan abu bonggol jagung sebagai substitusi semen dengan penambahan Sikacim terhadap sifat mekanis dan fisik beton. Metode yang digunakan adalah eksperimen laboratorium dengan mutu rencana f’c 30 MPa. Variasi campuran meliputi LG 3%, 5%, dan 8% serta ABJ 4% dan SC 0,7%. Hasil menunjukkan bahwa nilai slump meningkat seiring persentase limbah, berkisar antara 10–11 cm, dan masih memenuhi standar. Kuat tekan tertinggi dicapai pada variasi LG 5% dengan nilai 44,46 MPa, meskipun lebih rendah dari beton normal (49,80 MPa), tetapi tetap di atas mutu rencana. Daya serap air meningkat pada beton variasi, namun tetap di bawah batas maksimum 6%. Dapat disimpulkan bahwa kombinasi limbah granit, abu bonggol jagung, dan Sikacim masih menghasilkan beton dengan kualitas baik. Penelitian ini merekomendasikan batas substitusi optimal limbah granit sebesar 5% untuk menjaga keseimbangan antara kekuatan, kelecakan, dan ketahanan terhadap air.
Co-Authors Abd Halim Abdullah Baharun Abelia Putri Adipratama, Firza Afendy Widayat Agung Puji Haryanto Ahmad Asrof Fitri Ahmad Edi Saputra Alam, Rudy Aldi Rahman Dirta Alif, Muhammad Nur Buana, Bima Galang Buana Budiman daniel rabitha, daniel rabitha Daud Dede Kusnadi Dede Rohmat Nurjaya Dede Rohmat Nurjaya, Dede Rohmat Della, Nanda Desfa Anisa Dian Pitaloka Priasmoro, Dian Pitaloka Eko Rini farastuti Ernawati Fani Farhansyah Febriani, Nawang Wulan Handayani, Jullya Fratiwi Heni Widyaningsih, Heni Ikhsan Qodri Pramartaa Ilham Wahyudi Ivan Rivan Firdaus Jaenal Abidin Julianti P, Eva Kama Abdulhakam Komarudin Lesmana, Dudi Lia Angraeni Listiyapinto, Ravi Zamzam Masriani Situmorang Muhammad Alkhalish Muhammad Rezza Aditya Pratama Mumpuni, Sri Fia Munthe, Agyanata Tua Nafisah Eka Puteri Naufal, Ahmad Muzaky Nur Alia, Nur Nur Amalina, Ayu Nur Awalin, Faturrohman Nursalamah Siagian, Nursalamah Oktoviana Nur Ajid Petricia, Echa Rahmawati Rasendria, Muhamad Ratna Fitria Ratri, Tanti Sekar Rivani, Vita Diah Rizal Hidayat Sagitarius, Sagitarius Sidik, Dikdik Zafar Sinaga, Stefya Natasya Sari Sinulingga, Elyzabeth Arihta siti wulandari SOBIRIN Sri Harti Widyastuti Susanti, Pini Tatang Muhtar, Tatang Vierto Widi Kusumah Widi Kusumah Widyastuti, Desy Wilodati YUNI ASRI, YUNI Yusmawati