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Jeckson Siahaan
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Pengukuran Prestasi Belajar Struktur Atom Menggunakan Instrument Two Tier Test pada Mahasiswa Program Studi Pendidikan Kimia FKIP Universitas Mataram diana aksara; Jeckson Siahaan; Mukhtar Haris; Burhanuddin
Chemistry Education Practice Vol. 6 No. 1 (2023): Edisi Mei 2023
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v6i1.3530

Abstract

Penelitian ini merupakan penelitian deskriptif kualitatif yang bertujuan untuk mendeskripsikan hasil pengukuran prestasi belajar struktur atom mahasiswa Program Studi Pendidikan Kimia Universitas Mataram menggunakan instrumen Two Tier Test. Sampel yang digunakan yaitu mahasiswa Program Studi Pendidikan Kimia Tahun Angkatan 2020 kelas B sebanyak 26 orang. Uji validitas ahli menunjukkan kedua validator memberikan penilaian valid terhadap instrumen soal dengan masing-masing nilai V sebesar 0,67 dan 0,83. Hasil penelitian menunjukkan nilai rata-rata persentase penggolongan pemahaman konsep pada item paham konsep dan menebak tergolong dalam kriteria sedang, sedangkan pada item miskonsepsi dan tidak paham konsep tergolong dalam kriteria rendah. Sementara itu, nilai total prestasi belajar siswa yaitu sebesar 66,84. Berdasarkan data tersebut dapat disimpulkan bahwa penggunaan instumen two tier test dapat mendeskripsikan hasil pengukuran prestasi belajar struktur atom mahasiswa Program Studi Pendidikan Kimia Universitas Mataram yaitu tergolong dalam kriteria baik.
Etnokimia Pada Budaya Sasambo Sebagai Sumber Proyek P5 Untuk Mata Pelajaran Kimia SMA Fase F Sunniarti Ariani; Jeckson Siahaan; Lalu Rudyat Telly Savalas; Nora Listantia; Dodiy Firmansyah; Rozana Lestari; Ria Sofia Nurmala
Jurnal Ilmiah Profesi Pendidikan Vol. 10 No. 4b (2025): Edisi Khusus
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jipp.v10i4b.3628

Abstract

Sampai saat ini, siswa tetap menganggap bahwa kimia adalah pelajaran yang sulit. Sangat perlu untuk mengintegrasikan kimia dengan budaya yang familier dengan siswa yang dapat diterapkan pada pelaksanaan proyek P5. Tujuan penelitian ini adalah untuk mengidentifikasi sains asli masyarakat Lombok yang relevan dengan materi kimia di SMA. Penelitian ini merupakan penelitian deskriptif kualitatif dengan pendekatan fenomenologi sains asli. Fokus penelitian ini adalah pengetahuan sains asli yang ada di masyarakat Lombok dan Sumbawa. Analisis yang digunakan adalah analisis tematik, yaitu data dikategorikan berdasarkan tema-tema tertentu. Terdapat 21 jenis sains asli masyarakat Lombok dan Sumbawa yang telah dikonstruksi menjadi sains ilmiah yang relevan dengan konsep kimia dan dapat dijadikan sebagai sumber praktikum proyek P5 pada Fase F. Sains asli tersebut antara lain: Sie Geles, Tempe, Tahu, Bubur Palopo, Tuak Manis, Cerorot, Jajan Bantal/Tikel, Poteng Ketan, Sayur Ares, Tape Singkong, Pembuatan Gula Aren, Nyirih, Minyak Sumbawa, Bubus Tiwang/apus, Sembeq Tinjot, Perang Topat, Awok-awok pada tradisi begawe, Dile Jojor, Barodak Rapancar, Tenun Umbaq, Pembuatan Gerabah yang berasal dari suku Sasak dan Samawa. Konsep kimia pada Fase F yang relevan sebagai sumber praktikum kimia SMA dengan pengetahuan sains asli adalah stoikiometri, kadar zat, hidrolisis garam, faktor-faktor yang mempengaruhi laju reaksi, koloid, ikatan kovalen, gaya van der walls, gaya london, termokimia, reaksi eksoterm, reaksi endoterm, kesetimbangan kimia, asam basa, titrasi asam basa, larutan elektrolit dan nonelektrolit, sifat koligatif larutan, dan senyawa organik. Semua sains asli masyarakat SASAMBO yang telah dikonstruksi menjadi sains ilmiah sangat relevan untuk diterapkan sebagai sumber proyek praktikum P5.
Majalah Sains: Skrining Fitokimia Ekstrak Daun Kulur (Artocarpus Camansi) Zomratus Solehah; Aliefman Hakim; Jeckson Siahaan
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.v8i2.8890

Abstract

This study aims to produce a science magazine, analyze the level of validity and the level of practicality of student responses to science magazines on phytochemical screening and antibacterial and antifungal activity tests of kulur (artocarpus camansi) leaf extracts. The sample in this study used purposive sampling technique, namely 30 students who have programmed Natural Material Chemistry courses and are not currently participating in the MBKM program. Data collection methods used in this study are expert validation sheets and student response questionnaire sheets. The data analysis technique used was data analysis of validation results and analysis of student responses. The results of this study indicate that science magazines have been developed and are feasible to use with an average expert validation score of Aiken's V index = 0.94 which is included in the very valid category, besides the results of student response trials show that science magazines get an average percentage of practicality of 92% which is included in the very practical category. Keywords: Science Magazine, Phytochemical Screening, Antibacterial, Antifungal, Kulur Leaf, Validity, Practicality
The Pengaruh Model Pembelajaran POE (Predict, Observe, Explain) Terhadap Hasil Belajar Kimia Materi Asam Basa Pada Siswa Kelas XI SMAN 1 Langgudu Nurkamaliah Lia; Jeckson Siahaan; Mukhtar Haris
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.v8i2.10146

Abstract

This study aims to determine the effect of POE (Predict, Observe, Explain) learning model on chemical learning outcomes of acid-base material in class XI IPA SMAN 1 Langgudu. This type of research is a quasi experimental design. The population is all students of class XI IPA SMAN 1 Langgudu which amounted to 50 people. The sampling technique used saturated sampling. Determination of control and experimental classes is based on the average value of the midterm assessment, students of class XI IPA 1 obtained a greater average value of 78.76 than class XI IPA 2 which is 70.16 so that class XI IPA 1 is designated as the control class and XI IPA 2 as the experimental class. Data collection techniques using test instruments. The average value of the experimental class pretests (49.12) was lower than the control class (52.28). While the average value of the experimental class posttest (84.4) is higher than the control class (76.92). The N-Gain test results show that the increase in learning outcomes of experimental class students is more in the high category than the control class. The t-test results obtained tcount of 2.4091> ttable 2.0106 then H0 is rejected and Ha is accepted. While the results of the percentage of student activeness of the experimental class at each meeting were higher than the control class, so that experimental class students were more active than the control class. The results of this study can be concluded that the POE learning model (Predict, Observe, Explain, and Explain) is an effective learning model.
Development of Student Worksheets Based on Project Based Learning on Green Chemistry Materials at SMAN 2 Gerung Dina Rahmatin; Jeckson Siahaan; Sunniarti Ariani
Chemistry Education Practice Vol. 9 No. 1 (2026): Edisi Mei
Publisher : FKIP University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/cep.v9i1.11612

Abstract

This research is a development research or Research and Development (R&D) which aims to produce Student Worksheets (LKPD) based on Project Based Learning (PjBL) which are categorized as feasible and practical regarding green chemistry material. The type of research used is Research and Development (R&D) which refers to the 4D model (define, design, develop, disseminate). Validation of the content of LKPD based on PjBL was carried out by two Chemistry Education lecturers and one Chemistry subject teacher at the high school level. The results of the study showed that the validity value obtained using the Aiken's V Index was 0.92 in the very valid category. The level of practicality was measured through student responses to LKPD based on PjBL. The results of the analysis of student responses were in the very practical category with a practicality percentage of 86%. Based on these results, it can be concluded that LKPD Based on PjBL on green chemistry material that was developed is feasible and practical to be used in learning because it has met the valid and practical categories.
Co-Authors Aliefman Hakim diana aksara Dina Rahmatin Firmansyah, Dodiy Lalu Rudyat Telly Savalas Mukhtar Haris Nora Listantia Nurkamaliah Lia Ria Sofia Nurmala Rozana Lestari Solly Aryza Sunniarti Ariani Zomratus Solehah