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All Journal IAES International Journal of Robotics and Automation (IJRA) Jurnal Neutrino : jurnal fisika dan aplikasinya Jurnal Tadris Kimiya JIPF (Jurnal Ilmu Pendidikan Fisika) PENDIPA Journal of Science Education Jurnal Pendidikan Multikultural Indonesia Eduproxima : Jurnal Ilmiah Pendidikan IPA Hydrogen: Jurnal Kependidikan Kimia International Journal of Research in Education (IJRE)
M. Lutfi Firdaus, M. Lutfi
University of Bengkulu
Religion Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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Ethnoscience-Based Module: Biodiversity Materials in Lembak Tribe Walid, Ahmad; Winarni, Endang Widi; Yanti, Fitri April; Firdaus, M. Lutfi; Suherman, Suherman; Zulkarnain, Zulkarnain
Jurnal Tadris Kimiya Vol 7 No 2 (2022)
Publisher : Department of Chemistry Education, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jtk.v7i2.19955

Abstract

Efforts to conserve plants and documentation of related local knowledge in the Dendam Tak Sudah Lake, Dusun Besar Village, Bengkulu City area are important to carry out and introduce to students. The study aims to synthesize the biodiversity material modules developed to identify the types of medicinal plants found in Dusun Besar Village. Thiagarajan's development model section is define, design, develop, and disseminate. Identification, synthesis, feasibility, response, and analysis data were obtained as research data. The module was piloted in five elementary schools in Bengkulu City. The study found 20 types of medicinal plants, including the most commonly used hereditary species in the Lembak community. The validation results show that the criteria are very valid, with an expert validator value of 85%. The module also received an excellent response rate of 82%. Therefore, the biodiversity material modules are very attractive, feasible, and effective for learning biodiversity materials in elementary schools.
Biosynthesis of Gold Nanoparticles Using Wuluh Star Fruit (Averrhoa bilimbi) for Chromium Analysis Dewi, Ria Kemala; Firdaus, M. Lutfi; Nursa'adah, Euis
Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 1 (2024): February 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i1.10188

Abstract

One of the heavy metals that can pollute waters is the heavy metal chromium (Cr). Chromium has many important roles in life. Chromium material is widely used by humans for various purposes, especially in the industrial world. However, the large number of uses of chromium in the industrial world and the waste it generates can have a negative impact on the environment and human health. One way to deal with chromium pollution is by analyzing the presence of chromium in waters. The aim of this research is to analyze the presence of chromium using a simple, effective, economical and accurate method, namely the biosynthesis of gold nanoparticles using samples of starfruit (Averrhoa bilimbi) as a bioreductor rich in ascorbic acid, with a colorimetric method, namely a method based on the aggregation of gold nanoparticles with ascorbic acid from starfruit, which causes a shift in plasmons and causes color changes that can be seen by the eye. Based on the analysis results, data was obtained that gold nanoparticles synthesized from the starfruit bioreductor can detect chromium with a concentration of 10 ppm with optimum conditions at pH 5, temperature 75oC, optimum incubation time of 5 minutes and gold nanoparticles are selective and sensitive for detecting chromium.
PENGEMBANGAN BOOKLET ZAT ADITIF BUNGA KECOMBRANG (Etlingera hemisphaerica) UNTUK MENINGKATKAN PENGUASAAN KONSEP SISWA KELAS VIII SMP Pradipta, Andika; Johan, Henny; Firdaus, M. Lutfi
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 8, No 1 (2026)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v8i1.8707

Abstract

Penelitian ini bertujuan mengembangkan booklet zat aditif bunga kecombrang (Etlingera hemisphaerica) untuk meningkatkan penguasaan konsep siswa kelas VIII SMP. Model pengembangan yang digunakan adalah model ADDIE yang teridi dari tahap: Analyze, Design, Development, Implementation, dan Evaluation. Hasil pada penelitian ini diperoleh dari instrumen yang menggunakan teknik CVR pada uji lembar validasi booklet zat aditif, serta soal pretest dan posttest dengan teknik analisis data yang digunakan mencakup uji reliabilitas, uji daya pembeda, uji tingkat kesukaran soal, dan analisis penguasaan konsep siswa. Untuk menguji validitas butir pertanyaan, menggunakan SPSS 25. Disimpulkan booklet tentang zat aditif dari bunga kecombrang layak digunakan sebagai bahan ajar untuk meningkatkan pemahaman konsep siswa kelas VIII SMP. Hal ini didukung oleh hasil validasi yang menunjukkan nilai CVI sebesar 0,96 dengan kategori sangat layak. Selain itu, peningkatan pemahaman konsep siswa terlihat setelah menggunakan booklet tersebut, yang dibuktikan melalui nilai N-gain sebesar 0,75 dengan kategori tinggi.
Co-Authors ACENG RUYANI Anggraini, Yestilia Anni Anggraeni, Anni BHAKTI KARYADI Dewi, Ria Kemala Elsi Adelia Fitri Endang Widi Winarni Esterlin Fahima, Bima Fahmizal, Fahmizal Fauzan, Ahmad Al Firmanul Catur Wibowo Fitri April Yanti, Fitri April Geminastiti, Elis Anggun Hadi, Hanifa Rahma Hendrati, Diana Henny Johan Iwan Setiawan Junaini, Junaini Mardhotillah, Yulia Mayub, Afrizal Nursa'adah, Euis Nursaadah, Euis Pradipta, Andika Putra, Syalendra Putri Anjarsari Ramadhan, M. Rizqi Renata, Maria Rotami, Ladya Santhy Wyantuti Suherman, Suherman Walid, Ahmad Wardana, Rendy W. Wardana, Rendy Wikrama Yunitasari Yunitasari, Yunitasari Zulkarnain Zulkarnain