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All Journal Bioedukasi: Jurnal Pendidikan Biologi Eduproxima : Jurnal Ilmiah Pendidikan IPA
Masitah Masitah
Pendidikan Biologi, FKIP, Universitas Mulawarman
Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Physics

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ANALISIS MISKONSEPSI BIOLOGI BERBASIS TES DIAGNOSTIK FOUR-TIER MULTIPLE CHOICE BERBANTUAN CRI PADA MATERI PERUBAHAN LINGKUNGAN DI SMA NEGERI 3 SAMARINDA Purwaningsih Purwaningsih; Masitah Masitah; Ruqoyyah Nasution; Jailani Jailani
Bioedukasi Jurnal Pendidikan Biologi Vol 16 No 1 (2025): BIOEDUKASI, MEI 2025
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/bioedukasi.v16i1.10450

Abstract

This study analyzes biology misconceptions using a Four-Tier Multiple Choice diagnostic test supported by the Certainty of Response Index (CRI) on the topic of environmental change and preservation among Grade X students at SMA Negeri 3 Samarinda. The research employed a descriptive design involving 280 students from eight Grade X classes. The instrument used was a 10-item Four-Tier Multiple Choice test integrated with the CRI to assess both conceptual understanding and students’ confidence in their answers. Data were analyzed using Miles and Huberman’s model, which includes data reduction, data display, and conclusion drawing. The results showed that the average misconception rate among students was 50.64%, categorized as moderate. The highest rate of misconception (66.43%) was found in the indicator related to the causes of environmental change, classified as high. The findings indicate that the use of a Four-Tier Multiple Choice diagnostic test with CRI is an effective tool for identifying misconceptions in biology. Therefore, targeted instructional interventions are necessary to address these misconceptions and improve students' conceptual understanding.
PENGARUH PENAMBAHAN TEPUNG DAUN SINGKIL (Premna Corymbosa) DALAM PAKAN IKAN TERHADAP PERTUMBUHAN LELE SANGKURIANG (Clarias Gariepinus Var. Sangkuriang) Muthmainah Qulub Mabrurah; Masitah Masitah; Teguh Pribadi; Ruqoyyah Nasution; Vandalita Rambitan
Bioedukasi Jurnal Pendidikan Biologi Vol 16 No 2 (2025): BIOEDUKASI, NOVEMBER 2025
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/bioedukasi.v16i2.12352

Abstract

To maximize production, catfish farmers must optimize feed quality as one of the key factors supporting catfish growth and development. This study aimed to analyze the effect of adding singkil leaf flour (Premna corymbosa) to feed on the growth performance of Sangkuriang catfish (Clarias gariepinus var. Sangkuriang). The research was conducted from February to April using a randomized group design with four treatments and six replications. The treatments consisted of 100% pellets (P1), 100% singkil leaf flour (P2), 80% pellets + 20% singkil leaf flour (P3), and 70% pellets + 30% singkil leaf flour (P4). The analysis of singkil leaf flour showed a moisture content of 6.5%, ash content of 9.3%, protein 2.6%, fat 0.7%, and total carbohydrates 80.9%. The best growth performance was observed in the P3 treatment (80% pellets + 20% singkil leaf flour). It can therefore be concluded that singkil leaf flour alone cannot serve as an alternative single feed for catfish; however, it can be effectively used as a supplementary ingredient at a maximum proportion of 20% in combination with pellets.
KAJIAN RENDEMEN DAN MUTU ORGANOLEPTIK MINYAK ATSIRI DAUN SINGKIL (Premna corymbosa Rottl. et Willd) SEBAGAI KANDIDAT BAHAN BAKU AROMATERAPI Zulfa Zakiyyah; Teguh Pribadi; Tias Bonita; Imam Wijayadi; Eadvin Rosrinda Awang Sari; Masitah Masitah
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 7, No 4 (2025)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v7i4.9442

Abstract

Produksi minyak atsiri nasional hingga saat ini masih bergantung pada jenis komersial. Ketergantungan pada komuditas tersebut menyebabkan kurangnya eksplorasi serta pemanfaatan tanaman lokal penghasil minyak atsiri lainnya secara optimal. Karenanya diperlukan upaya eksplorasi terhadap tanaman lokal aromatik potensial yang belum banyak diteliti salah satu contohnya adalah Singkil (Premna corymbosa). Penelitian ini bertujuan untuk mengetahui rendemen minyak atsiri yang dihasilkan tanaman Singkil (Premna corymbosa),serta menilai mutu organoleptiknya. Penelitian ini dilakukan dengan metode distilasi uap. Adapun teknik uji organoleptik menggunakan metode uji hedonik yang melibatkan 30 panelis. Penelitian ini menunjukkan hasil rendemen minyak atsiri sebesar 0,5 mL dari 1.3 kg (0,038% v/b). Hasil uji organoleptik menunjukkan minyak atsiri singkil memiliki warna jernih, aroma tajam dan khas serta kekentalan yang rendah “cair” dengan tingkat daya terima panelis “puas”. Minyak atsiri yang diperoleh dari daun singkil tua memiliki potensi sebagai bahan utama dalam pengembangan produk berbasis minyak atsiri. Meski demikian, agar kualitas dan kuantitas minyak yang dihasilkan lebih maksimal, diperlukan studi lanjutan yang meneliti pengaruh faktor-faktor seperti usia daun, teknik pengeringan, serta variasi suhu dan durasi proses distilasi terhadap rendemen dan mutu minyak.
Co-Authors Eadvin Rosrinda Awang Sari Imam Wijayadi Jailani Jailani Muthmainah Qulub Mabrurah Purwaningsih Purwaningsih Ruqoyyah Nasution Teguh Pribadi Tias Bonita Vandalita Rambitan Zulfa Zakiyyah