Article Per Year (5 Year)
p-Index From 2021 - 2026
2.319
P-Index
This Author published in this journals
All Journal Microbiology Indonesia JURNAL PIJAR Jurnal Penelitian Pendidikan IPA (JPPIPA) Biosaintifika: Journal of Biology & Biology Education Chemistry Indonesian Journal of Chemical Research Jurnal Pengabdian Magister Pendidikan IPA Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Chemistry Education Practice Jurnal Ilmiah Profesi Pendidikan Journal of Classroom Action Research Jurnal Pijar MIPA Molekul: Jurnal Ilmiah Kimia
LALU RUDYAT TELLY SAVALAS
FKIP Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

Published : 29 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search
Journal : chemistry education practice

 1 
Efektivitas STEM Terhadap Pemahaman Konsep Kimia Siswa Ditinjau dari Perbedaan Gender Sri Rosmini, Parida; Sofia, Baiq Fara Dwirani; Savalas, Lalu Rudyat Telly
Chemistry Education Practice Vol. 8 No. 1 (2025): Edisi Mei
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v8i1.4863

Abstract

This study aims to determine the effectiveness of a lesson using the STEM (Science, Technology, Engineering and Mathematics) approach to students' understanding of chemistry concepts in terms of gender differences. The research method uses a quasi-experimental design by conducting pretest and posttest during learning. Sampling using purposive sampling technique. The sample in this study were 71 students of class XI MIPA 3 and XI MIPA 4 at Terara 1 Public High School, consisting of 36 students in class XI MIPA 3 as the experimental class and 35 students in class XI MIPA 4 as the control class. The data collection technique for this study used multiple choice questions and a questionnaire that had gone through validation tests and reliability tests to get students' understanding of chemistry concepts. The hypothesis test shows moderate criteria and the effect size test obtains a value of 0.3 with moderate criteria. Therefore, it can be concluded that the STEM approach affects students' understanding of concepts and gender does not affect students' understanding of concepts.
Pengaruh Model PJBL Berbasis Stem Terhadap Kemampuan Berpikir Kreatif Siswa Pada Materi Asam dan Basa Febriana, Febriana; Savalas, Lalu Rudyat Telly; Hakim, Aliefman
Chemistry Education Practice Vol. 8 No. 1 (2025): Edisi Mei
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v8i1.7656

Abstract

Penelitian ini adalah kuasi eksperimen semu dengan tujuan mengetahui adanya pengaruh model PjBL (Project Based Learning) berbasis STEM (Sains, Technology, Engineering and Mathematics) terhadap peningkatan berpikir kreatif siswa kelas XI IPA di SMAN 1 Narmada pada materi asam dan basa. Desain penelitian yang digunakan yaitu non-equivalent control group design. Sampel pada penelitian ditentukan dengan metode purposive sampling. Populasi yang dipilih adalah semua siswa kelas XI IPA SMAN 1 Narmada yang berjumlah 213 siswa, sedangkan sampelnya diperoleh siswa kelas XI IPA 5 sebagai kelompok eksperimen dan siswa kelas XI IPA 4 sebagai kelompok kontrol. Instrumen pada penelitian ini yaitu instrumen tes berupa soal uraian yang terdiri dari 8 soal. Analisis data dilakukan dengan menggunakan beberapa uji, anatra lain uji N-Gain, uji normalitas, uji homogenitas varians dan uji hipotesis (uji-t) dua pihak menggunakan rumus uji-t polled varians. Berdasrkan hasil uji-t diperoleh thitung sebesar 4,06 dan ttabel sebesar 1,99 pada dk sebesar 69 dengan taraf signifikan 5%. Karena thitung lebih besar dari ttabel maka Ho ditolak dan Ha diterima yang artinya model PjBL (Project Based Learning) berbasis STEM (Sains Technology Engineering and Mathematics) berpengaruh terhadap peningkatan kemampuan berpikir kreatif siswa kelas XI IPA di SMAN 1 Narmada pada materi asam dan basa.
Analisis Pelaksanaan Praktikum dan Pengelolaan Laboratorium Kimia MA Negeri Se-Lombok Timur Tahun Ajaran 2023/2024. Apri Nesti, Melziana; Haris, Mukhtar; Savalas, Lalu Rudyat Telly
Chemistry Education Practice Vol. 8 No. 1 (2025): Edisi Mei
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v8i1.8349

Abstract

Penelitian ini bertujuan untuk menganalisis kondisi dan pengelolaan laboratorium kimia serta pelaksanaan praktikum kimia di SMA Negeri MA di Lombok Timur tahun ajaran 2023/2024. Metode penelitian yang digunakan adalah deskriptif kuantitatif dengan pengumpulan data melalui angket dan wawancara yang melibatkan guru kimia, kepala laboratorium, asisten laboratorium, dan siswa. Data penelitian dianalisis menggunakan teknik deskriptif kuantitatif dalam bentuk persentase. Interpretasi data menggunakan 5 kriteria (sangat baik, baik, cukup, kurang, sangat kurang). Hasil penelitian menunjukkan bahwa pelaksanaan praktikum kimia di MAN 1 Lombok Timur dan MAN 2 Lombok Timur berada pada kategori “Sangat Baik”, sedangkan di MAN IC Lombok Timur berada pada kategori “Baik”. Pengelolaan laboratorium di ketiga sekolah tersebut berada pada kategori “Sangat Baik” dengan total nilai rata-rata sebesar 92,42%. Namun, kelengkapan laboratorium di MAN IC masih kurang memadai dan berada pada kategori “Cukup”. Hasil wawancara menunjukkan bahwa kendala utama dalam pengelolaan laboratorium antara lain keterbatasan peralatan dan sumber daya manusia, khususnya asisten laboratorium. Meskipun terdapat beberapa kendala, namun pelaksanaan praktikum dan manajemen laboratorium di SMA MA Negeri Lombok Timur secara umum sudah berjalan dengan baik.
Analisis Kesulitan Belajar Siswa dalam Memahami Konsep Kimia Laju Reaksi Kelas XI IPA SMA Negeri 1 Labuapi Salahudin, Afrianti; Savalas, Lalu Rudyat Telly; Hidayanti, Ermia
Chemistry Education Practice Vol. 8 No. 1 (2025): Edisi Mei
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v8i1.9083

Abstract

This study aims to describe the learning difficulties of students that need to be overcome in understanding the concept of reaction rate chemistry in class XI science SMA Negeri 1 Labuapi. The approach used is a qualitative descriptive approach. The subjects of this study are all students of class XI science of SMA Negeri 1 Labuapi, with samples selected using the nonprobability sampling method of saturation sampling. Data collection was carried out through a closed questionnaire on a likert scale of 5 and interviews. Data interpretation refers to five categories of learning difficulties, namely very high, high, moderately high, low, and very low, which are determined based on simple percentages and tables. The results of the data analysis showed that: 1) Students who experienced difficulties with internal factors included aspects of student ability 38.7%, student interest 37.5%, understanding of reaction rate material concepts 30%, student motivation 27.5%, included in the low category while external factors with aspects of approach/learning model 35%, teaching resources 23% were in the low category, and teachers 17%, class conditions 15% were in the very low category 2) Students' learning difficulties in understanding the concept of reaction rate chemistry that need to be considered are internal factors of student ability indicators (38.75%) and external factors in learning approaches/model indicators (35%).
Pengaruh Media Augmented Reality Terhadap Pemahaman Konsep Siswa Kelas Xi MIPA SMAN 1 Pujut Pada Materi Asam Basa Husnusshaliha, Baiq Ulfa; Muti'ah, Muti'ah; Savalas, Lalu Rudyat Telly; Supriadi, Supriadi
Chemistry Education Practice Vol. 8 No. 2 (2025): Edisi November
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v8i2.8622

Abstract

This study aims to determine the effect of Augmented Reality media on the conceptual understanding of eleventh-grade students at SMAN 1 Pujut on the topic of acids and bases. The research design used is a quasi-experiment with a nonequivalent control group design. The population for this study consists of tenth-grade students at SMAN 1 Pujut. The research sample includes class XI F1 as the experimental group (23 students) and class XI F2 as the control group (20 students). The learning outcome instrument is a post-test in the form of multiplechoice questions. Quantitative data analysis was performed to test the hypothesis using a t-test. The results show that the calculated t-value (3,84) is greater than the table t-value (2.01), which means that the null hypothesis (H₀) is rejected, and the alternative hypothesis (Hₐ) is accepted. The results of the student response questionnaire to the application of Augmented Reality learning media on acid-base material showed that the number of students who stated Strongly Agree (SS) was 44%, Agree (A/S) was 34%, Disagree (D/TS) was 17%, and Strongly Disagree (SD/STS) was 5%. Thus, the average percentage of Strongly Agree and Agree choices was 78%. Therefore, it can be concluded that there is an effect of using Augmented Reality media on the conceptual understanding of eleventh-grade students at SMAN 1 Pujut.
Analisis Kesulitan Belajar Siswa Kelas XI MAN 1 Lombok Tengah Pada Mata Pelajaran Kimia Hijrathaen, Citra; Savalas, Lalu Rudyat Telly; Ariani, Sunniarti
Chemistry Education Practice Vol. 8 No. 2 (2025): Edisi November
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v8i2.9170

Abstract

Learning difficulties are obstacles that hinder students from achieving optimal academic performance. This study aims to analyze the learning difficulties encountered by Grade XI students in chemistry and to identify the contributing factors. The research employed a descriptive method with a qualitative approach, involving 70 students from MAN 1 Central Lombok as research subjects. Data were collected using questionnaires, interview guides, and students’ test scores. The research instruments were validated by three expert validators, yielding a validity score of 0.88, indicating a high level of validity, and tested for reliability using Cronbach’s Alpha, which confirmed their consistency. Data were analyzed descriptively by calculating the percentage of learning difficulties based on specific indicators or criteria. The findings revealed that students faced major difficulties in calculation-based materials (60%) and theoretical concepts (54.06%). Interviews were conducted to strengthen the data obtained from the questionnaires. The contributing factors were categorized into internal factors, external factors, and learning approaches, with internal factors being the most dominant at 59%. This study is expected to serve as an evaluation material for teachers and schools in designing more effective and context-based learning strategies in chemistry education.
Co-Authors 'Ardhuha, Jannatin 'Ardhuha, Jannatin . PURKAN Adiguna, Sya’ban Putra Agus Abhi Purwoko Agus Abhi Purwoko Ahmad Fadli Aliefman Hakim Apri Nesti, Melziana Ap’aluddin Basri, Nurul Hasan Chorina Ika Ristanti DESSY NATALIA Earlyna Sinthia Dewi Eka Junaidi Erin Ryantin Gunawan Faradis, Taritsu Hazal Febriana Febriana, Febriana Firmansyah, Dodiy Henikusniati - Hidayanti, Ermia hijrathaen, citra Husnusshaliha, Baiq Ulfa I MADE SUDARMA I Nyoman loka I Wayan Sudiarta Jannatin Ardhuha JANNATIN ARDHUHA, JANNATIN Jeckson Siahaan Lestari, Chomsa Asih Lestari, Rozana Listantia, Nora Mardhika Surachman Mardhika Surachman Mega Safana Muhamad Hendri Diarta Muhammad Hanafi Mukhtar Haris MULIAWATI SINDUMARTA Munib - Muntari - Muntari Muntari Muti'ah, Muti'ah Muti’ah, Muti’ah Nanda Nabila Maharani Ningsih, Baiq Nila Sari Nisa, Lilik Khaerun Nurjamilah Nurmala, Ria Sofia Nurul Hikmatun Wasia NURWAHIDAH NURWAHIDAH Nurwahidah Nurwahidah Pomeistia, Meilynda PRAPTI SEDIJANI, PRAPTI Putri Julia Maemum Putri, Windiarti Pratiwi Rahim, Santi Rahmawati, Rahmawati Safitri, Erni Salahudin, Afrianti Saprizal Hadisaputra Siti Elsi Pritami Siti Elsi Pritami Siti Nurkhaliza Sofia, Baiq Fara Dwirani Sofia, Fara Dwirani Sri Rosmini, Parida Sunniarti Ariani Supriadi Supriadi Susilawati - Syarifa Wahidah Al Idrus Thufail Mujaddid Al-Qoyim Ulfa Dwiyanti Wahidah, Etty Nurul Yayuk Andayani Yayuk Andayani