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All Journal Matriks Teknik Sipil Tsaqofah: Jurnal Penelitian Guru Indonesia Asian Journal of Early Childhood and Elementary Education
Rizki, Dwi
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences

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STABILISASI TANAH GAMBUT MENGGUNAKAN CAMPURAN GYPSUM SINTETIS (CaSO4 2H2O) dan GARAM DAPUR (NaCl) DITINJAU DARI PENGUJIAN CBR Rizki, Dwi; Surjandari, Niken Silmi; Djarwanti, Noegroho
Matriks Teknik Sipil Vol 4, No 3 (2016): September 2016
Publisher : Program Studi Teknik Sipil FT UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.738 KB) | DOI: 10.20961/mateksi.v4i3.37095

Abstract

Tanah gambut dikategorikan tanah lunak yang berarti tanah dalam keadaan kurang baik dan bermasalah apabila akan dibangun suatu konstruksi perkerasan jalan raya diatasnya. Perlu adanya upaya peningkatan daya dukung tanah gambut salah satunya yaitu stabilisasi tanah secara kimiawi, dengan cara menambahkan zat aditif (bahan tambah) yang dapat bereaksi dengan tanah. Pada penelitian ini bahan tambah yang digunakan adalah gypsum sintetis (CaSO4. 2H2O) dan garam dapur (NaCl). Reaksi yang terjadi disini diamati dan dianalisis pada perubahan nilai parameter CBR laboratorium keadaan terendam (soaked) dan tak terendam (unsoaked). Pengujian ini dilaksanakan di laboratorium mekanika tanah Universitas Sebelas Maret Surakarta. Besar persentase gypsum sintetis yaitu 10%, 15%, 20% dan garam dapur sebesar 2%, 4%, 6%. Variasi campuran dibuat empat varian yaitu tanah gambut asli, tanah gambut ditambah gypsum sintetis, tanah gambut ditambah garam dapur dan tanah gambut ditambah gypsum sintetis dan garam dapur. Hasil penelitian menunjukan bahwa nilai CBR yang terbesar berada pada campuran, tanah gambut + 20% gypsum + 6% NaCl sebesar 5.08 dalam keadaan terendam dan 5.21 pada keadaan tak terndam.
Memahami Pengaruh Lingkungan Sekolah terhadap Kemampuan Membaca Lancar Level 3 pada Anak Sekolah Dasar Rizki, Dwi; Putri, Siti Gahara; Chandra, Chandra; Wijanarko, Tiok
TSAQOFAH Vol 4 No 4 (2024): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/tsaqofah.v4i4.3227

Abstract

This research aims to understand the influence of the school environment on the reading fluency of fifth-grade elementary school students. The school environment includes factors such as the quality of teaching, the availability of reading materials, support from teachers, and a conducive learning atmosphere. The research methods used are surveys and observations in elementary schools. The results of the study show that a good and supportive school environment has a positive correlation with students' reading fluency. Factors such as interactive teaching approaches, adequate library availability, and emotional support from teachers have been proven to improve students' reading abilities. These findings underline the importance of creating a conducive school environment for the development of literacy in elementary students.
Peningkatan Hasil Belajar Peserta Didik pada Pembelajaran Pendidikan Pancasila Menggunakan Model Problem Based Learning (PBL) Berbantuan Wordwall Kelas IV SDN 076/II Tenam Candi Kabupaten Bungo Rizki, Dwi; Waldi, Atri; Anita, Yesi; Indrawati, Tin
Asian Journal of Early Childhood and Elementary Education Vol 3 No 2 (2025): Asian Journal of Early Childhood and Elementary Education
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/ajecee.v3i2.4967

Abstract

The research aims to improve the learning outcomes of students in the Pancasila Education subject in the fourth grade of SDN 076/II Tenam Candi, Bungo Regency, through the implementation of the Problem Based Learning (PBL) model assisted by Wordwall. This study employs Classroom Action Research (CAR) conducted in two cycles. Each cycle consists of planning, implementation, observation, and reflection. The results of the study show a significant improvement in student learning outcomes from the first cycle to the second cycle. The class average score increased from 67 in the first cycle to 86.15 in the second cycle, with the percentage of students achieving completeness rising from 54% to 92%. The PBL model has proven effective in enhancing student engagement and problem-solving skills through interactive learning that is relevant to daily life.
Co-Authors Chandra Chandra Djarwanti, Noegroho Niken Silmi Surjandari Putri, Siti Gahara Tin Indrawati Tiok Wijanarko Waldi, Atri Yesi Anita