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All Journal Harmoni Sosial: Jurnal Pendidikan IPS Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JAWI : Journal of Southeast Asia Islamic Contemporary Issues KOVALEN: Jurnal Riset Kimia Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Akta Kimia Indonesia Chemistry Indonesian Journal of Chemical Research JURNAL PENDIDIKAN TAMBUSAI Khatulistiwa: Journal of Islamic Studies Hydrogen: Jurnal Kependidikan Kimia Jurnal Paris Langkis Sains: Jurnal Kimia & Pendidikan Kimia Jurnal Sains dan Kesehatan Jurnal Pendidikan Progresif
La Rudi
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Social Sciences

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Analysis of Chemistry Problem-Solving Ability in Symbolic Level for Senior High School Students Rudi, La; Haetami, Aceng; Asria, Asria; Shuid, Ahmad Naqib bin
Jurnal Pendidikan Progresif Vol 13, No 1 (2023): Jurnal Pendidikan Progresif
Publisher : FKIP Universitas Lampung

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Abstract

Objective: The study aims to analyzing the Ability to Solve Symbolic Level Chemistry Problems on Buffer Solution Material at SMA Negeri 1 Mawasangka Tengah aims to determine the ability to solve symbolic level chemistry problems and responses of MIPA XI class students to Three Tier Multiple Choice questions on buffer solution material. Method: This research method using descriptive qualitative method. The entire population in this study was used as a sample, namely all students of class XI MIPA, totaling 60 students. Data collection was carried out using a Three Tier Multiple Choice diagnostic test and a student response questionnaire. Finding: The results showed that the ability to solve symbolic level chemistry problems on buffer solution material was still low, with an average percentage of understanding the concept of 9.77%, misconceptions of 57.75%, and not understanding the concept of 32.48%. Students' responses to the use of three-tier multiple-choice questions were positive, with a percentage of 74.30%; students gave good responses to the three-tier test, so this form of test is categorized as good to identify the level of student understanding in solving symbolic level chemistry problems on buffer solution material. Concusion: From the results of the analysis, it can be concluded that the diagnostic three-tier test is one of the good test forms to find out about problem-solving skills in the form of problems. Keywords: chemistry problem solving ability, symbolic, three tier multiple choiceDOI: http://dx.doi.org/10.23960/jpp.v13.i1.202310
Application of cooperative learning type Quick on the Draw on buffer solution material to improve learning outcomes of Class XI students Rudi, La; Widiyanto, Brian Tri; Saefuddin, Saefuddin; Esnawi, Esnawi
Jurnal Pendidikan dan Pembelajaran Kimia Vol 12, No 3 (2023): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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This research aims to determine student learning outcomes, determine effectiveness and determine student responses to the quick on the draw type cooperative learning model on buffer solution material. The sample of this research was class XI MIPA 3 students using simple random sampling. The method used is quasi-experimental with a Randomized Control Group Pretest-Posttest Design. From the research results, it was found that the learning outcomes of students who were taught using the quick on the draw type cooperative learning model on buffer solution material were obtained on average 79.68 while the control class was 77.42 with completeness of learning outcomes based on the KKM score of 83.9% for the experimental and 61.74% for the control class. Based on the analysis of the N-gain value, it was found that the quick on the draw learning model was effective for use in buffer solution material, this was because the N-gain value for the experimental class reached the high category of 35% while the control class was 19%. The results of the analysis of student response questionnaires showed that 68% of students said they were very interested in the quick on the draw learning model because learning was more fun, and 87% of students were very motivated in learning. DOI: 10.23960/jppk.v12.i3.23.11 
Aktivitas Antioksidan Ekstrak Metanol Ampas Sagu Rawa (Metroxylon sp): Antioxidant Activity of Methanol Extract Swamp Sago Pulp (Metroxylon sp) Nurdin, Widhi Mulya; Rahman, Abraham; Rudi, La
Jurnal Sains dan Kesehatan Vol. 6 No. 4 (2024): J. Sains Kes.
Publisher : Fakultas Farmasi, Universitas Mulawarman, Samarinda, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25026/jsk.v6i4.2247

Abstract

This study aimed to determine the content of secondary metabolites contained in the methanol extract of swamp sago pulp (Metroxylon sp) and total phenolic which determines the antioxidant activity of swamp sago pulp (Metroxylon sp). Methanol extract of swamp sago pulp was obtained by maceration method. Total phenolic content was determined by folin-ciocalteu method and antioxidant activity determination using DPPH method. Methanol extract of swamp sago pulp (Metroxylon sp) was identified for flavonoid compounds, tannins, alkaloids and phenolic compounds. Methanol extract of swamp sago pulp has a total phenolic content of 73.90 ± 0.073 mg GAE/g with very strong antioxidant activity (IC50 17.38 ppm). Keywords:          Antioxidant, Metroxylon sp, Phytochemical, Phenolic   Abstrak Penelitian ini bertujuan untuk mengetahui kandungan metabolit sekunder yang terdapat dalam ekstrak metanol ampas sagu rawa (Metroxylon sp) serta total fenolik yang menentukan  aktivitas antioksidan pada ampas sagu rawa (Metroxylon sp). Ekstrak metanol ampas sagu rawa diperoleh dengan metode maserasi. Kandungan total fenolik ditentukan dengan metode folin-ciocalteu dan penentuan aktivitas antioksidan menggunakan metode DPPH. Ekstrak metanol ampas sagu rawa (Metroxylon sp) teridentifikasi mengandung golongan senyawa flavonoid, tanin, alkaloid dan golongan senyawa fenolik. Ekstrak metanol ampas sagu rawa memiliki kandungan fenolik total sebesar 149,81 ± 0,010 mg GAE/g dengan aktivitas antioksidan yang sangat kuat (IC50 17,38 ppm). Kata Kunci:         Antioksidan, Metroxylon sp, Fitokimia, Fenolik
Development of Interactive Learning Media Based on a 2-Dimensional Virtual Laboratory on Electrochemical Materials Joko, Neneng Andriani; Rudi, La; Arsyad, Muhammad
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 1 (2025): February 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i1.14853

Abstract

This study aims to analyze the feasibility of interactive learning media based on a 2D virtual laboratory for electrochemistry material and to examine students' responses to its use. The media was designed as a solution to address the limitations of laboratory equipment and materials often encountered in schools. The research method employed was Research and Development (R&D) using the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation). The media’s validity was analyzed using Aiken’s V content validity, involving three expert validators. The results of the analysis indicated a validity score of 0.86, which falls into the high category, demonstrating that the media is feasible for use. Student responses to the media were also analyzed, yielding an overall quality percentage of 75.98%, classified as good. Based on these findings, the learning media is considered effective and applicable in the teaching and learning process for electrochemistry materials to enhance students' conceptual understanding and practical skills.
Co-Authors ., Asriyanti Abd. Rasyid Syamsuri Abraham Rahman Aceng Haetami, Aceng Arham, Laode Arman Arman Arni Fauzia Rante Arwien, Rizki Trisnawaty Asria Asria Azmil, Mimil B. Wahyono, Sugeng Darmawansyah, Tely Esnawi, Esnawi Fahyuddin Fahyuddin, Fahyuddin Farida Hanum Fitriyanti Fitriyanti Hanisu, Hanisu Hesti Husain Haikal I Gusti Bagus Wiksuana Imran Joko, Neneng Andriani Karim Karim, Karim La Harimu La Ode Abd Kadir Laily Nurliana Marhadi, M. Alim Marhadi, Muh Alim Marhadi, Muh. Ali Masdiana Masdiana Mimil Azmil Muh. Natsir Muhammad Alim Marhadi Muhammad Arsyad Muhammad Arsyad Muhammad Rivai Muna Erna Wati Murlia, Sitti Murlia, Sitti Musta, Rustam Nohong Nurdin, Widhi Mulya Nurmiati, Euis Nurpila, Nurpila Rahman, Abraham Rahmanpiu Rante, Arni Fauziah Risman, Kadar Rizal Rizal Ruslan Saefuddin Saefuddin Said Karamaullah Santoso, Giswa Ayu Pratiwi Sari Novi Delpia Setiawan, Wa Ode Nining Setiyawan, Wa Ode Nining Shuid, Ahmad Naqib bin Silvia Solly Aryza THAMRIN AZIS Wahyono, Sugeng B Widiyanto, Brian Tri