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Sofia Krisen
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Chemistry Education

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Kandungan Mineral “Nike” Ikan Payangkah (Ophiocara aporos ) dari Danau Tondano di Sulawesi Utara Sofia Krisen; Jeanne Tuerah
Jurnal Kimia Fullerene Vol 7 No 2 (2022): Fullerene Journal of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v7i2.514

Abstract

Research has been conducted on the Mineral Content of “nike” Payangkah fish (O. aporos ) from Lake Tondano in North Sulawesi. The research objective was to determine the levels of Calcium, Magnesium, Manganese and Phosphorus. "nike" Payangkah fish (O. aporos) is taken directly from Lake Tondano fish farmers in Minahasa Regency, North Sulawesi. Sample preparation techniques include receiving, washing, selecting other than “nike” Payang fish and associated materials (excrement). All parts of the fish body are used as samples. Determination of Ca, Mn and Mg using (AAS) while P using (UV-VIS). The results show that the average P content (259.6 mg/100g); Ca (380.3 mg/100g); Mn (0.275 mg/100g) and Mg (21.49 mg/100g). When compared with the average mineral content for fish released by (FAO), these results indicate that "nike" Payangka fish (O. aporos) has good mineral content and can be used to increase mineral intake and protect against mineral deficiency diseases
Participatory Action Research dalam Pembelajaran Kimia Abad 21: Pengembangan Rencana Pelaksanaan Pembelajaran Bercirikan PCK Kartyka Nababan; Sofia Krisen
Oxygenius: Journal Of Chemistry Education Vol 5 No 1 (2023): Oxygenius : Journal of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v5i1.519

Abstract

Participatory Action Research the development of a learning implementation plan characterized by pedagogical content knowledge is research involving chemistry teachers who directly experience the real conditions of learning. The resulting lesson plan is relevant to use in the same environment as the learning nature setting, for example online, offline, and blended. Device development is carried out through a cycle through at least four main steps; (1) RPP device development; (2) field tests; (3) evaluation; and (4) reflection. Input factors (input) in the development are: (1) the experience of teachers; (2) knowledge of the learning process; (3) theory and reflection methods; (4) scientific in educators; and (5) intuition and creativity of teachers. While the products produced are (1) 21st-century PCK lesson plans; (2) knowledge of 21st-century chemistry teaching; (3) Process Quality Improvement; (4) trained teachers; and (5) new concepts and teaching materials.
Penerapan Model Pembelajaran Project Based Learning Terhadap Hasil Belajar Siswa Kelas XI IPA Pada Materi Sistem Koloid Di Sma Negeri 1 Motoling Timur Misye Gamastri Sumampow; Sofia Krisen; Joice Caroles
Oxygenius: Journal Of Chemistry Education Vol 5 No 2 (2023): Oxygenius : Journal Of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v5i2.583

Abstract

Pelajaran berbasis proyek (PjBL) adalah model pembelajaran yang menggunakan proyek atau kegiatan sebagai alat pembelajaran untuk memperoleh sikap, pengetahuan, dan keterampilan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penerapan project learning (PjBL) terhadap hasil belajar siswa pada materi sistem koloid. Penelitian ini dilakukan di SMA Negeri 1 Motoling Timur pada tahun ajaran 2021/2022. Metode pengumpulan data menggunakan pre-test dan post-test. Metode analisis data yang digunakan yaitu uji normalitas, homogenitas, hipotesis. Hasil penelitian uji normalitas menunjukkan bahwa Lo kelas eksperimen 0.14 dan kelas kontrol 0.15 dengan Ltabel 0.180 sehingga Lo<Ltabel, uji homogenitas yaitu fhitung lebih kecil dari ftabel yaitu 1.01<2.03 pada taraf α=0,05, menunjukkan kedua kelas sampel memiliki varians yang homogen. Uji hipotesis didapat harga thitung=3.44 sedangkan ttabel=2.01 pada taraf nyata α=0,05, menunjukkan bahwa thitung (3.44)>ttabel (2.01). Berdasarkan hasil uji-t diatas maka hipotesis H1 diterima dan H0 ditolak. Pembelajaran Project based learning efektif untuk mempengaruhi peningkatan hasil belajar siswa.
Co-Authors Jeanne M. Tuerah Joice Dorsila Susana Caroles Kartyka Nababan Misye Gamastri Sumampow