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All Journal International Journal of Science and Applied Science: Conference Series Formatif: Jurnal Ilmiah Pendidikan MIPA Eksakta : Berkala Ilmiah Bidang MIPA Optika : Jurnal Pendidikan Fisika Jurnal Sains dan Edukasi Sains Eduproxima : Jurnal Ilmiah Pendidikan IPA JagoMIPA: Jurnal Pendidikan Matematika dan IPA Inornatus: Biology Education Journal
Antonia Fransiska Laka
Universitas Flores
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

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Analysis of acid-base misconceptions using modified certainty of response index (CRI) and diagnostic interview for different student levels cognitive Satya Sadhu; Maria Tensiana Tima; Vika Puji Cahyani; Antonia Fransiska Laka; Desfi Annisa; Atina Rizanatul Fahriyah
International Journal of Science and Applied Science: Conference Series Vol 1, No 2 (2017): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (768.041 KB) | DOI: 10.20961/ijsascs.v1i2.5126

Abstract

The authors in this paper draw attention to the importance of an instrument that can analyze student’s misconception.This study described the kind of the misconception in acid-base theory, and the percentage students’ misconception occur in every subconcept of acid-base theory. The design of this study is a descriptive method, involved 148 of 11th grade science students from Senior High School, which divided into two classes are high cognitive and low cognitive. Further analysis of using Modified Certainty of Response Index (CRI) as a diagnostic instrument is used to explore misconception which in that test included evaluating only content knowledge with considering the reason behind the students' choice of response and their certainty of response in every question. The result of data analysis has shown that misconception occurred in high cognitive class, gained 43,86% and misconception occurred in low cognitive class, gained 24,63%. Based on the diagnostic interview has shown that misconception occurred in students due to students does not understand the concept well and they related the one concept to the other concepts with partial understanding, the result students make the failed conclusions. The type of misconception occurred is a conceptual misunderstanding.  According to the data analysis showed that Modified Certainty of Response Index (CRI) is effective used to analyze students’ misconceptions and the diagnostic interview is effective used to know the reasons that caused students which having misconceptions.
Validation of Instrument Multiple Representations for Analyzing the Multiple Representations Capability of Students in Hydrocarbon Materials Antonia Fransiska Laka; Hari Sutrisno
Formatif: Jurnal Ilmiah Pendidikan MIPA Vol 11, No 2 (2021): Formatif: Jurnal Ilmiah Pendidikan MIPA
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/formatif.v11i2.5922

Abstract

This study aims to validate multiple representational instruments to analyze the ability of multiple representations of students on hydrocarbon material. This research uses a descriptive quantitative method with a non-experimental approach. This research uses the stratified purposive sampling method with 123 students who will respond to 35 items of multiple-choice questions covering macroscopic, microscopic, symbolic, and mathematical aspects. The data analysis technique used in the research is qualitative data analysis and quantitative data analysis. The Rasch model in this research analyzed instruments such as unidimensionality, item fit, test reliability, and difficulty level of the item. The data analysis shows that the average Aiken index is 0.961 on the substance aspect, 0.93 on the construction aspect, and 0.950 on the language aspect for the theoretical validation results. The highest Aiken index is 1.000, and the lowest is 0.896. Unidimensionality was 32.4%, the result of the item fit analysis obtained 1 item that was not fit, namely item number 29, and for the reliability test results: the person reliability value was 0.65, and the item reliability was 0.97. The analysis results of the difficulty level of the items on the instrument of measuring the cognitive abilities of students with multiple representations types were nine items in the easy category, 14 items in the medium category, and 11 items in the difficult category. Therefore, based on the resulting validity and reliability categories, the compiled test instrument can be used as a tool to measure students’ multiple representation abilities.
PENGARUH PENDEKATAN KONTEKSTUAL BERBASIS E-LEARNING ZOOM CLOUD MEETING TERHADAP PEMAHAMAN KONSEP RADIASI BENDA HITAM MAHASISWA Ilyas Ilyas; An Nisaa Al Mu’min Liu; Antonia Fransiska Laka
OPTIKA: Jurnal Pendidikan Fisika Vol. 6 No. 1 (2022): OPTIKA: Jurnal Pendidikan Fisika
Publisher : Program Studi Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Flores

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/optika.v6i1.1884

Abstract

This study aims to determine the effect of a contextual approach based on e-learning on the understanding of the concept of black body radiation students of the Physics Education Study Program at the University of Flores. This type of research is quantitative research, with descriptive statistical analysis and inferential statistics to describe data on understanding the concept of black body radiation for students of the Physics Education Study Program at the University of Flores in quantum physics courses using a contextual approach based on e-learning. The data collection technique used in this research is a test technique. From the results of descriptive analysis shows that the average student learning outcomes are 79.80 which is in the sufficient category. While the results of inferential statistics show the t-count value of 5, 378, sig(2-tailed) 0.000. Because the value of sig(2-tailed) 0.000 is smaller than 0.05, this indicates that the contextual approach based on e-learning has an effect on understanding the concept of black body radiation for students of the Physics Education Study Program, University of Flores.
PERSEPSI MAHASISWA PENDIDIKAN FISIKA UNIVERSITAS FLORES TENTANG PROGRAM MERDEKA BELAJAR KAMPUS MERDEKA (MBKM) Yasinta Embu Ika; Antonia Fransiska Laka; Philipus Nerius Supardi; Donatus Rendo; Damiana Nofita Birhi
OPTIKA: Jurnal Pendidikan Fisika Vol. 6 No. 2 (2022): OPTIKA: Jurnal Pendidikan Fisika
Publisher : Program Studi Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Flores

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/optika.v6i2.2194

Abstract

Penelitian ini bertujuan untuk mengetahui persepsi mahasiswa Program Studi Pendidikan Fisika FKIP Universitas Flores tentang program Merdeka Belajar Kampus Merdeka (MBKM). Penelitian ini merupakan penelitian deskriptif dengan pendekatan kuantitatif dengan metode survei. Data diperoleh dari populasi yakni 85 responden yang merupakan mahasiswa Program Studi Pendidikan Fisika Universitas Flores. Data dikumpulkan melalui kuesioner. Teknik analisis data dimulai dari pengumpulan data kemudian dianalisis menggunakan analisis deskriptif. Hasil dari penelitian survei ini menunjukkan bahwa mahasiswa pada program studi pendidikan fisika, Fakultas Keguruan dan Ilmu Pendidikan (FKIP) Universitas Flores memberikan respon yang positif terhadap program Merdeka Belajar Kampus Merdeka (MBKM).
PENGARUH MODEL PEMBELAJARAN DISCOVERY LEARNING BERBASIS PRAKTIKUM TERHADAP HASIL BELAJAR SISWA PADA KONSEP SIFAT KOLIGATIF LARUTAN Antonia Fransiska Laka; Damiana Nofita Birhi
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 6, No 3 (2024)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v6i3.5349

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh model discovery learning berbasis praktikum terhadap hasil belajar peserta didik pada konsep sifat koligatif larutan. Penelitian ini dilakukan di SMAK Frateran Ndao dengan menggunakan metode penelitian quasi eksperimen dengan desain penelitian pretest-posttest control group design. Sampel yang digunakan sebanyak 28 peserta didik kelas eksperimen dan 26 peserta didik kelas kontrol. Teknik pengumpulan data diperoleh melalui instrumen tes hasil belajar sebanyak 30 butir soal yang kemudian dianalisis menggunakan uji-t. Hasil penelitian menunjukkan bahwa uji hipotesis menggunakan uji-t dengan SPSS mendapatkan nilai Sig. (2-tailed) adalah 0,00. Nilai sig (2-tailed) yang lebih rendah dari 0,05 dapat diartikan bahwa hipotesis diterima, dimana terdapat pengaruh yang signifikan antara metode discovery learning berbasis praktikum dengan hasil belajar peserta didik pada materi Sifat Koligatif Larutan. 
MENINGKATKAN KETERAMPILAN MENGAJAR MAHASISWA PENDIDIKAN FISIKA MELALUI HYBRID MICROTEACHING Nasar, Adrianus; Laka, Antonia Fransiska
OPTIKA: Jurnal Pendidikan Fisika Vol. 8 No. 2 (2024): OPTIKA: Jurnal Pendidikan Fisika
Publisher : Department of Physics Education, Faculty of Teacher Training and Education, Universitas Flores

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/optika.v8i2.4347

Abstract

Penelitian ini bertujuan untuk mengevaluasi keterampilan mengajar mahasiswa pendidikan fisika melalui pendekatan hybrid microteaching yang menggabungkan pembelajaran tatap muka dan daring. Metode penelitian melibatkan dua siklus microteaching dengan sampel 17 mahasiswa semester 6, menggunakan instrumen penilaian keterampilan mengajar yang mencakup aspek seperti membuka dan menutup pelajaran, menjelaskan, bertanya, dan mengelola kelas. Hasil siklus pertama menunjukkan keterampilan mengajar berada dalam kategori "Cukup," dengan beberapa aspek memerlukan peningkatan. Siklus kedua memperlihatkan peningkatan signifikan, dengan sebagian besar keterampilan beralih ke kategori "Baik" atau "Sangat Baik," khususnya dalam membimbing diskusi dan mengajar kelompok kecil. N-Gain menunjukkan peningkatan keterampilan yang bervariasi, dengan beberapa keterampilan mengalami peningkatan tinggi. Kesimpulannya, metode hybrid microteaching efektif dalam meningkatkan keterampilan mengajar, namun masih diperlukan pengembangan lebih lanjut dalam aspek variasi pembelajaran.
Study of the efficiency of ZnAl2O4 as green nanocatalyst Damiana Nofita Birhi; Antonia Fransiska Laka
Inornatus: Biology Education Journal Vol. 4 No. 1 (2024): Inornatus: Biology Education Journal
Publisher : Univeritas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/inornatus.v4i1.584

Abstract

Waste from chemical reactions is still a hot issue to be discussed today. Green chemistry in its concept offers catalysts as an alternative to reducing waste resulting from chemical reactions. This literature study aims to examine the method of making ZnAl2O4 nanocatalysts and doping materials that are more effective in various reactions by considering the advantages and disadvantages of each. The content of the study includes the ZnAl2O4 nanocatalyst synthesis method, combination catalyst, and catalytic effectiveness in chemical reactions. Combustion, sol-gel, co-precipitation, hydrothermal, and microwave are the most common methods in the synthesis of ZnAl2O4. The use of precursors, fuel, and precipitating agents are very important factors when using combustion, sol-gel, and co-precipitation methods. Other factors that need to be considered are the raw material ratio, pH, and calcination temperature. The pH of the solution is 6-9 and the calcination temperature of 600oC – 800oC is the ideal point for producing nanocatalyst. The calcination temperature is lower to 300oC – 500oC when using hydrothermal and microwave as a synthesis method. ZnAl2O4 nanocatalyst has been identified as having good catalytic activity, but not higher than ZnAl2O4 combined with other catalysts. The combination of a catalyst with ZnAl2O4 spinel in hydrogenation, dehydrogenation, esterification, degradation, and organic synthesis has high catalytic activity with a conversion rate and selectivity of >70%.
Study of Indonesian Rhododendron: Classification, Conservation, and Pharmacology Activity Birhi, Damiana Nofita; Meike Tiya Kusuma; Antonia Fransiska Laka
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 26 No. 02 (2025): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol26-iss02/583

Abstract

Rhododendrons are representatives of ornamental plants with a wide range of pharmacological activities. Indonesia is the second richest country in Rhododendron plants with 233 species. Unfortunately, more than 85 species are severely lacking in data, 21 species are vulnerable, and more than 30 others are endangered or even no longer found. The purpose of this study is to review the species that have been found in Indonesia, and find the factors that affect conservation efforts to prevent the extinction of this plant. The results of the study succeeded in recording 221 species that had been found in Indonesia with 4 of them not having sufficient data so that named Rhododendron sp1, R. sp2, R. sp3 and R. sp4 by local residents. Four species were confirmed to be extinct, and most of the ex-situ conservation efforts unsuccessful. The results of this study show that there is need for cooperation between the government and residents around the Rhododendron growing location in an effort to preserve this plant. Researchers are also expected to pay more attention to this plant considering it has bioactive compounds with very high pharmacological properties.
Pengaruh Model Pembelajaran Inkuiri Terbimbing dengan Strategi Scaffolding untuk Meningkatkan Pemahaman Konsep Fisika dan Kemampuan Komunikasi Muhammad, Adzkiya Salsabila; Harso, Aloisius; Laka, Antonia Fransiska
JagoMIPA: Jurnal Pendidikan Matematika dan IPA Vol. 5 No. 4 (2025): JagoMIPA: Jurnal Pendidikan Matematika dan IPA
Publisher : Yayasan Pendidikan Bima Berilmu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53299/jagomipa.v5i4.2649

Abstract

Penelitian ini bertujuan untuk meneliti dampak penggunaan metode pembelajaran inkuiri terbimbing yang digabungkan dengan strategi Scaffolding terhadap pemahaman konsep fisika dan kemampuan komunikasi siswa. Penelitian ini menggunakan pendekatan kuantitatif dengan desain pre-experimental. Subjek penelitian adalah siswa kelas XI fase F di MAN Ende pada tahun ajaran 2025/2026, sedangkan sampel penelitian kelas XI F 3 yang berjumlah 31 siswa. Pemilihan sampel dilakukan dengan menggunakan teknik purposive sampling. Data diperoleh melalui ujian, Lembar Kerja Peserta Didik (LKPD), serta lembar observasi. Data yang dianalisis adalah hasil ujian pemahaman konsep fisika terkait materi usaha dan energi serta temuan observasi mengenai kemampuan komunikasi siswa. Analisis data dilakukan dengan uji normalitas dan uji t (One-Sample Test dan Paired Sample Test). Hasil penelitian menunjukkan bahwa penerapan pembelajaran inkuiri terbimbing berbasis Scaffolding memberikan dampak positif terhadap pemahaman konsep fisika siswa. Hal ini ditunjukkan dengan peningkatan rata-rata skor dari pre-test sebesar 42,13 menjadi 85,94 pada post-test. Selain itu, strategi pembelajaran ini juga berkontribusi pada peningkatan kemampuan komunikasi siswa, yang mengindikasikan adanya pengaruh signifikan setelah diterapkannya model pembelajaran tersebut.
Pilsbryoconcha exilis: Kajian Tentang Struktur, Komponen dan Nutrisi, serta Pemanfaatannya dalam Pengolahan Pencemaran Air Birhi, Damiana Nofita; Abi, Faustina de Yesu Prisila; Laka, Antonia Fransiska
Jurnal Sains dan Edukasi Sains Vol. 8 No. 2 (2025): Jurnal Sains dan Edukasi Sains
Publisher : Faculty of Science and Mathematics, Universitas Kristen Satya Wacana, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/juses.v8i2p173-184

Abstract

Perairan Indonesia hingga saat ini masih menunjukan adanya pencemaran, walaupun pada tahun 2020 Bappenas telah mengklaim bahwa air bersih nasional akan mencapai 100% pada akhir tahun 2024. Sistem pembuangan limbah dari berbagai sektor ke aliran sungai serta kurangnya kesadaran masyarakat akan pentingnya air bagi kesehatan menjadi tantangan terbesar dalam menghadapi persoalan ini. Upaya pemurnian air menggunakan penyaring telah banyak diteliti dan diterapkan. Salah satu penyaring alami adalah Pilsbryoconcha exilis (kerang kijing). Tujuan penulisan artikel review ini adalah mengkaji lebih dalam mengenai struktur dan morfologi kerang kijing, kandungan nutrisi, serta manfaatnya dalam mengatasi berbagai persoalan lingkungan. Kajian dilakukan dengan mengumpulkan data penelitian selama 10 tahun terakhir dari tahun 2014-2024 pada Google Scholar, Crossref, dan Elsevier. Data yang dikumpulkan sebanyak 54 artikel, yang kemudian dipilah berdasarkan kata kunci. Hasil pengolahan data mendapatkan 55 unsur dan senyawa dalam kerang kijing termasuk logam berat, dan berbeda pada setiap kerang. Hal ini dikarenakan ekosistem akan mempengaruhi pertumbuhan kerang seperti pH, suhu, kadar oksigen, hingga bakteri dan plankton yang menjadi makanan kerang. Pemanfaatan kijing sebagai bahan makanan terus mengalami peningkatan meski kijing telah diklaim mengandung logam berat yang berbahaya bagi konsumen. Penelitian terhadap teknik pengolahan kijing mendapatkan bahwa kandungan logam berat pada kijing akan menurun melalui perebusan pada suhu 100 oC. Disamping itu, pemanfaatan kijing sebagai biofilter, hidroksiapatit, antibakteri, serta antioksidan juga menunjukkan hasil yang menjanjikan. Penelitian lanjutan terhadap manfaat kerang kijing perlu terus dilakukan mengingat, kerang ini berkembang biak dengan baik di hampir seluruh wilayah perairan Indonesia, dan memiliki manfaat-manfaat yang belum dikaji secara mendalam.
Co-Authors Adrianus Nasar Aloisius Harso An Nisaa Al Mumin Liu Atina Rizanatul Fahriyah Damiana Nofita Birhi Desfi Annisa Donatus Rendo Faustina De Yesu Prisila Abi Hamsa Doa Hari Sutrisno Ilyas Maria Tensiana Tima Meike Tiya Kusuma Muhammad, Adzkiya Salsabila Philipus Nerius Supardi Satya Sadhu Valeria Jeluna Vika Puji Cahyani YASINTA EMBU IKA Yulius Saprianus Dala Ngapa