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Evaluation of Higher-Order Thinking Skills of Middle School Students on Vibration and Wave Topic Using Rasch Measurement Kusumadani, Annur Indra; Afandy, Harry; Agustina, Lina; Astuti, Rina; Waluyo, Muhamad
Jurnal Penelitian Pendidikan IPA Vol 11 No 5 (2025): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i5.10900

Abstract

Higher-order thinking skills (HOTS) are crucial in science education, yet students often struggle to master them, particularly in complex topics such as vibrations and waves. This study aimed to evaluate the HOTS performance of 165 eighth-grade students from five schools in Purbolinggo Sub-district, East Lampung, using a two-tier multiple-choice test analyzed through the Rasch Measurement Model. The test consisted of 12 items, each with a content question and a reasoning tier, adapted from Treagust (1988) and validated through expert judgment. Rasch analysis indicated that most students demonstrated low HOTS ability, especially in the creating domain (C6), involving generating novel ideas or solutions. In contrast, analyzing (C4) and evaluating (C5) were relatively easier but still reflected limited mastery. The highest difficulty appeared in questions requiring divergent thinking and complex synthesis. Item fit statistics showed good instrument validity (person reliability = 0.93; item reliability = 0.83). These findings highlight the importance of implementing learning strategies that foster creativity and synthesis, such as problem-based learning or project-based approaches. The study was limited to one geographic area, which may restrict generalizability. Future research should explore broader contexts and incorporate qualitative data to deepen understanding of HOTS development in science.
Pengaruh Penambahan Pupuk Organik Cair Eceng Gondok Dan Ampas Tebu Terhadap Pertumbuhan Tanaman Tomat Iqbal Kurniawan, Mochammad; Astuti, Rina
Jurnal Agri Smart Deli Sumatera Vol. 2 No. 2 (2024): Artikel Riset September 2024
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat (LPPM) Universitas Deli Sumatera

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Abstract

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pupuk organik cair eceng gondok (Eichonia crassipes) dan ampas tebu terhadap pertumbuhan dan hasil bibit tanaman tomat (Solanum lycopersicum) dalam berbagai konsentrasi. Selanjutnya untuk mengetahui berapa konsentrasi paling optimal dari pupuk organik cair eceng gondok (Eichonia crassipes) dan ampas tebu terhadap pertumbuhan dan hasil bibit tanaman tomat (Solanum lycopersicum). Penelitian ini menggunakan jenis penelitian deskriptif kualitatif dengan menggunakan metode eksperimental dan pola dasar Rancangan percobaan Kelompok Teracak Sempurna (RKTS) dengan 2 faktor. Hasil menunjukkan pupuk dari eceng gondok dan ampas tebu berpengaruh secara nyata terhadap pertumbuhan jumlah daun, tinggi batang, jumlah buah, dan berat buah. Perlakuan pupuk organik cair eceng gondok dan ampas tebu dengan konsentrasi 40 ml/kg tanah, 80 ml/kg tanah ,dan 120 ml/kg tanah lebih efektif digunakan daripada perlakuan kontrol. Kemudian perlakuan dengan konsentrasi pupuk organik cair eceng gondok 120 ml/kg tanah dengan pupuk organik cair limbah ampas tebu 80 ml/kg tanah (E3A2) merupakan perlakuan yang paling efektif digunakan. Selanjutnya percobaan tanpa pupuk organik cair eceng gondok dan tanpa pupuk organik cair limbah ampas tebu (perlakuan kontrol) mendapatkan hasil rerata jumlah daun, tinggi batang, jumlah buah, dan berat buah terendah
EFEKTIFITAS PRAKTIKUM BIOKIMIA BERBASIS LABORATORY VIRTUAL DI MASA PANDEMI COVID-19: STUDI KOMPARASI PRAKTIKUM LURING DAN DARING UNTUK MENINGKATKAN PEMAHAMAN KONSEP MATERI PROTEIN PADA MAHASISWA Rina Astuti; Gakuh Munia Setianingsih; Samia Rahayu
Jurnal Inovasi Pendidikan dan Sains Vol 2 No 1 (2021): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v2i1.498

Abstract

Abstract:. Learning held in tertiary institutions must be in line with the 21st century learning paradigm, where students are expected to be active and creative in developing their potential. The nature and characteristics of 21st century learning are reflected in science learning which refers to 3 things such as processes, products and attitudes which can be seen in practicum-based learning methods. This study aims to compare the results of practicum during the Covid-19 pandemic which was conducted online and during offline, namely before the pandemic that hit Indonesia and even the world. The method used is a quasi-experimental method with the comparison method. The analysis used in this study was the independent sample t-test where the subjects were students with different classes and were given two different learning treatments, namely offline and online. The results showed that the real or offline practicum was better and more effective than the internal practicum. network (online).