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Pengaruh Model Pembelajaran Project Based Learning (PjBL) terhadap Hasil Belajar Siswa pada Materi Sistem Peredaran Darah di Kelas XI SMA N 1 Barumun Selatan Kabupaten Padang Lawas Widya, Poppy Andra; Lubis, Khairiza; Harahap, Fauziyah; Pranoto, Hendro; Aryeni, Aryeni
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v9i1.25466

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Project Based Learning terhadap hasil belajar siswa pada materi sistem peredaran Darah di kelas XI IPA di SMA Negeri 1 Barumun Selatan. Desain penelitian yang digunakan adalah pretest-posttest control group design. Pengambilan sampel diambil secara purposive sampling. Penelitian ini menggunakan 1 kelas eksperimen dan 1 kelas kontrol . Setelah diberikan perlakuan, kelas eksperimen dan kelas kontrol akan diberikan posttest untuk mengetahui hasil belajar pasca perlakuan. Teknik analisis data yang digunakan pada penelitian ini terdiri dari uji prasyarat dan uji hipotesis. Uji prasyarat dilakukan dengan menggunakan uji normalitas Shapiro- Wilk dan uji homogenitas Levene Pada penelitian ini didapatkan hasil rata-rata nilai pretest kelas eksperimen adalah 47,92 dan kelas kontrol adalah 46,91. Nilai postest yang diperoleh dari kelas eksperimen (80,00) lebih tinggi dibandingkan pada kelas kontrol (75,00). Rata-rata nilai pretest dan posttest kelas eksperimen dan kontrol dilakukan uji normalitas Shapiro-Wilk dan uji homogenitas Levene Uji normalitas diperoleh hasil dengan pretest 0,398 dan nilai posttest 0,322. Berdasarkan hal tersebut, dapat dikatakan rata- rata nilai pretest dan posttest kelas eksperimen dan kontrol berdistribusi normal. Uji homogenitas diperoleh nilai pretest 0,340 dan nilai posttest 0,278, dimana pada perhitungan uji-t pada data nilai postest diperoleh 0,003 < 0,05 dimana hal ini menunjukkan bahwasanya model pembelajaran Project Based Learning memberikan pengaruh terhadap hasil belajar.

Aspek Etika dalam Pembuatan Nutrisi Hidroponik untuk Kangkung (Ipomoea aquatica) Nurkhofifah, Indah; Sastra, Siti Fathiya Dwinda; Husniatunnisa, Husniatunnisa; Lubis, Khairiza; Situmorang, Nurbaity
Journal of Natural Sciences Vol 6, No 1 (2025): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v6i1.715

Water spinach (Ipomoea aquatica) is a nutritious vegetable and has great potential in hydroponic cultivation. However, the creation of appropriate and ethical nutrients for the growth of this plant is still a challenge. This study aims to analyze the application of ethics in the creation and optimal concentration of nutrients A and B needed by water spinach plants. The method used is an experimental approach at the Horticultural Seed Development Unit, Medan, during the period January to March 2025. Data collected include plant height, number of leaves, and fresh weight of plants. The results of the study indicate that the right concentration of nutrients can increase the growth of water spinach plants and ensure the safety of consumption. This study provides insight for farmers and hydroponic practitioners in improving the quality of water spinach cultivation.

Growth pattern and otolith size of Tor spp. (Cyprinidae) Lubis, Khairiza; Manullang, Lydia Ruth Hasianna; Saragih, Ferosalina Natasia; Nasution, Debi Rausana; Sudibyo, Mufti; Siregar, Elida Hafni; Batubara, Agung Setia
Depik Vol 14, No 1 (2025): MARCH 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.1.42028

The threat of decreasing populations of Tor species continues to increase due to intensive fishing, habitat destruction and infrequent cultivation efforts. Monitoring of this group of fish must be carried out routinely to reveal the population conditions of fish. This research aims to reveal the population conditions of fish through an analytical approach to the length-weight relationship and fish otolith size. All fish samples were then taken for otoliths to measure their size and analyzed further using a scanning electron microscope (SEM). The research was conducted in the Tangkahan River, North Sumatra, Indonesia from January-March, 2023. The results showed that 43 samples of T. douronensis, 34 samples of T. tambra, and 24 samples of T. tambroides had b values of 2.853, 2.757, and 2.353, respectively. The b value in this study indicated that the fish had a negative allometric growth pattern. The size of the otoliths of the three Tor species shows that T. tambra has the highest length (the distance measured from the anterior to the posterior of the of sagitta otolith) on average reaching 9.31 mm, while T. tambroides and T. douronensis only reach 1.53 mm and 1.83 mm. The results were confirmed by ANOVA showing significant differences (P 0.05) in the mean value of otolith size based on Tor species, where the otolith size of T. tambra was significantly different compared to the other two species. The condition of Tor species in the Tangkahan River has experienced ecological pressure. This indication was concluded from the results of the analysis of the length-weight relationship of fish which showed b value 3 (negative allometric). The results show that the characteristics and size of the otoliths can differentiate Tor species and facilitate identification efforts related to management and conservation.Keywords:Habitat DestructionNegative AllometricAnterior of Sagitta OtolithPosterior of Sagitta Otolith

Kepadatan dan Morfometrik Kerang Mentarang (Pholas orientalis) di Perairan Pantai Remis Kecamatan Pantai Labu Kabupaten Deli Serdang Rambe, Nora Fatimah; Lubis, Khairiza
BIO-CONS : Jurnal Biologi dan Konservasi Vol. 7 No. 1 (2025): BIO-CONS: Jurnal Biologi dan Konservasi
Publisher : PROGRAM STUDI PENDIDIKAN BIOLOGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31537/biocons.v7i1.2211

Kerang mentarang (Pholas orientalis) dikenal secara lokal sebagai kerang tembarang dan tentarang. Tujuan penelitian ini adalah untuk mengetahui jumlah kepadatan kerang mentarang dan untuk mengetahui morfometrik kerang mentarang dengan dua kali pengulangan waktu pada kawasan Pantai Remis, Kecamatan Pantai Labu, Kabupaten Deli Serdang. Metode pengambilan sampel dilakukan ketika surut terendah dengan metode sistematik. Berdasarkan hasil penelitian, kepadatan kerang mentarang (P.orientalis) pada perairan Pantai Remis Kecamtan Pantai Labu Kabupaten Deli Serdang adalah 20,25 ± standar deviasi 24,89, dimana kepadatan pada bulan agustus 25,3 lebih tinggi dari bulan september 15,2 ind/m2. Morfometrik yang paling berkontribusi terhadap berat daging (Y) kerang mentarang (Pholas orientalis) adalah berat cangkang (X4) dengan kontribusi sebesar 47,1 %. Pengukuran parameter fisika dan kimia lokasi penelitian seperti suhu rata -rata 29,58- 33,7. Kekeruhan rata-rata 37,35-38,65, pH air 8,83-7,2, pH tanah rata- rata 6,65 -7,5, salinitas rata-rata 6,33-7,35, DO rata-rata 4,55-5,01, serta BOD rata-rata 2,57-2,7. Analisis bahan organik pada pantai remis hanya dilakukan pada bulan september, dengan rata-rata 12,8 %. Jenis substrat pada pantai remis yaitu lumpur padat.

Keanekaragaman Zooplankton di Muara Sungai Belumai Kecamatan Pantai Labu Kabupaten Deli Serdang Sahaya, Alfa; Lubis, Khairiza
BIO-CONS : Jurnal Biologi dan Konservasi Vol. 7 No. 1 (2025): BIO-CONS: Jurnal Biologi dan Konservasi
Publisher : PROGRAM STUDI PENDIDIKAN BIOLOGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31537/biocons.v7i1.2285

Penelitian ini bertujuan untuk mengetahui indeks keanekaragaman, nilai kelimpahan dan indeks dominansi zooplankton di Muara Sungai Belumai Kecamatan Pantai Labu Kabupaten Deli Serdang serta hubungan dengan sifat fisika-kimia perairan. Penelitian berlangsung pada bulan Juli-September 2024 di 5 stasiun menggunakan metode purposive sampling dengan 3 kali ulangan dan dianalisis di Laboratorium Biologi FMIPA Universitas Negeri Medan. Hasil penelitian menunjukkan zooplankton terdiri dari 26 taksa. Indeks keanekaragaman (H’) berkisar 2,227-2,945 dan tergolong tercemar sedang. Nilai Kelimpahan (N) berkisar 5,5-10,916 Ind/L dan tergolong mesotrofik dengan tingkat kesuburan sedang. Indeks Dominansi (D) berkisar 0,083-0,158 dan menunjukkan struktur komunitas dalam keadaan stabil. Parameter fisika-kimia perairan menunjukkan suhu perairan 28-30oC, kecerahan perairan 41-45 cm, kecepatan arus perairan 0,063-0,156 m/s, pH perairan 6,86-7,02, DO perairan 0,8-1,52 mg/L dan BOD perairan 1,5-5,9 mg/L.

Growth pattern and otolith size of Tor spp. (Cyprinidae) Lubis, Khairiza; Manullang, Lydia Ruth Hasianna; Saragih, Ferosalina Natasia; Nasution, Debi Rausana; Sudibyo, Mufti; Siregar, Elida Hafni; Batubara, Agung Setia
Depik Vol 14, No 1 (2025): MARCH 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.1.42028

The threat of decreasing populations of Tor species continues to increase due to intensive fishing, habitat destruction and infrequent cultivation efforts. Monitoring of this group of fish must be carried out routinely to reveal the population conditions of fish. This research aims to reveal the population conditions of fish through an analytical approach to the length-weight relationship and fish otolith size. All fish samples were then taken for otoliths to measure their size and analyzed further using a scanning electron microscope (SEM). The research was conducted in the Tangkahan River, North Sumatra, Indonesia from January-March, 2023. The results showed that 43 samples of T. douronensis, 34 samples of T. tambra, and 24 samples of T. tambroides had b values of 2.853, 2.757, and 2.353, respectively. The b value in this study indicated that the fish had a negative allometric growth pattern. The size of the otoliths of the three Tor species shows that T. tambra has the highest length (the distance measured from the anterior to the posterior of the of sagitta otolith) on average reaching 9.31 mm, while T. tambroides and T. douronensis only reach 1.53 mm and 1.83 mm. The results were confirmed by ANOVA showing significant differences (P 0.05) in the mean value of otolith size based on Tor species, where the otolith size of T. tambra was significantly different compared to the other two species. The condition of Tor species in the Tangkahan River has experienced ecological pressure. This indication was concluded from the results of the analysis of the length-weight relationship of fish which showed b value 3 (negative allometric). The results show that the characteristics and size of the otoliths can differentiate Tor species and facilitate identification efforts related to management and conservation.Keywords:Habitat DestructionNegative AllometricAnterior of Sagitta OtolithPosterior of Sagitta Otolith

Pengembangan Lembar Kerja Interaktif Berbasis Literasi Sains untuk Melatih Kemampuan Berpikir Kritis Peserta Didik Materi Fotosintesis Zamilah, Zamilah; Djulia, Ely; Lubis, Khairiza
Ideguru: Jurnal Karya Ilmiah Guru Vol 9 No 1 (2024): Edisi Januari 2024
Publisher : Dinas Pendidikan, Pemuda dan Olahraga Daerah Istimewa Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51169/ideguru.v9i1.821

Interactive Student Worksheets (LKPD) based on scientific literacy are an effective alternative learning method for training junior high school students critical thinking skills. This research focuses on developing interactive LKPD based on scientific literacy on photosynthesis material. The aims of this research are (1) to analyze the validity and effectiveness of interactive LKPD based on scientific literacy in training students' critical thinking skills, and (2) to analyze the results of students' critical thinking abilities while using interactive LKPD based on scientific literacy. The research method used is development research with the ADDIE model, which consists of analysis, design, development, implementation and evaluation. The subjects of this research were 30 students in class VII-6 of SMP Negeri 3 Lubuk Pakam. Research data was obtained from validation results by validators, data from critical thinking skills based on observations by observers and data from pretest and posttest results. The research results show that (1) the interactive LKPD developed has very high validity, both in terms of media at 95.24% and terms of material at 85.81%. Interactive LKPD is categorized as effective in training critical thinking skills with a percentage of 63%. (2) The pretest and posttest results show a significant difference with an N-gain value of 0.6, indicating a moderate increase, with classical learning completeness reaching 93%. Thus, this scientific literacy-based interactive worksheet on photosynthesis has proven to be valid and effective in training junior high school students critical thinking skills.

Bentuk dan Kelimpahan Mikroplastik pada Lobster Air Tawar (Cherax quadricarinatus) di Danau Toba Kabupaten Simalungun Tarihoran, Sulastri; Sudibyo, Mufti; Lubis, Khairiza
BEST Journal (Biology Education, Sains and Technology) Vol 9, No 1 (2026): Juni 2026
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v9i1.12816

Mikroplastik merupakan partikel plastik berukuran kurang dari 5 µm yang telah banyak mencemari lingkungan perairan dan berpotensi terakumulasi dalam tubuh organisme akuatik, termasuk lobster air tawar. Penelitian ini bertujuan untuk mengetahui bentuk, dan kelimpahan mikroplastik pada lobster air tawar (Cherax quadricarinatus) antar stasiun serta kelimpahan mikroplastik berdasarkan jenis kelamin lobster air tawar (Cherax quadricarinatus) di Danau Toba. Pengambilan sampel dilakukan di tiga stasiun berbeda, masing-masing diambil 20 sampel/stasiun. Prosedur penelitian dilakukan dengan tiga tahap pada masing-masing sampel yaitu pengambilan sampel lobster, preparasi sampel dan ekstraksi mikroplastik pada isi saluran pencernaan lobster dengan H2O2 30%, dan identifikasi sampel mikroplastik pada lobster. Bentuk mikroplastik yang ditemukan yaitu fiber, film, dan fragmen. Hasil penelitian diperoleh kelimpahan rata-rata mikroplastik yang ditemukan di Stasiun 1 yaitu 40 partikel/individu, Stasiun 2 33 partikel/individu, dan Stasiun 3 40,9 partikel/individu. Sedangkan hasil penelitian kelimpahan mikroplastik berdasarkan jenis kelamin, ditemukan pada lobster jantan sebesar 47 partikel/individu dan kelimpahan mikroplastik pada lobster betina sebesar 29 partikel/individu. Hasil ini mengindikasikan bahwa aktivitas manusia di sekitar danau toba berpengaruh terhadap tingkat pencemaran

Keanekaragaman dan Kelimpahan Serangga di Perkebunan Teh PTPN IV Tobasari Kecamatan Pamatang Sidamanik Kabupaten Simalungun Napitu, Angel Tessalonika; Lubis, Khairiza; Lazuardi, Lazuardi
Biocaster : Jurnal Kajian Biologi Vol. 6 No. 1 (2026): January (In Progress)
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v6i1.1022

This study aims to analyze the diversity and structure of insect communities in tea plants (Camellia sinensis) as the basis for sustainable and environmentally friendly plantation management. The research was conducted at the PTPN IV Tobasari Tea Plantation using an observation method with the installation of yellow sticky traps at five observation points. The results of the study showed that 20 species of insects were found with a total of 402 individuals, with the most species, namely Bactrocera dorsalis. A diversity index value (H') of 2.52 indicates a moderate level of diversity, a dominance index (C) of 0.14 indicates the absence of dominating species, and an evenness index (E) of 0.84 indicates a relatively even distribution of individuals between species. Measured abiotic factors include an average temperature of 29.75°C, light intensity of 3921.17 lux, and wind speed of 6.48 m/s. Ecologically, the combination of H', C, and E values shows that the ecosystem of the Tobasari Tea Plantation is in a fairly stable condition with low to moderate levels of ecological stress, thus supporting the sustainability of the insect community.

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