Pengembangan Lembar Kerja Peserta Didik (LKPD) Berbasis Problem Based Learnin…

Abstract: This Student Worksheet is a printed teaching material that teachers use as a learning resource for students to increase their knowledge, abilities and train their students' skills. LKPD used to study human movement system material in class XI. The aim of this research is to produce quality LKPD based on problem based learning and critical thinking skills on movement systems material…

Pengaruh Bahan Setek dan Zat Pengatur Tumbuh Terhadap Pertumbuhan Setek Tengg…

Tenggek burung (Euodia ridleyi Hochr.) is a plant that belongs to the Rutaceae family. Propagation of the tenggek burung can be obtained generatively with seeds and wild shoots from nature. This study aims to determine the effect of cutting materials and growth regulators (ZPT) on the growth of Tenggek burung (Euodia ridleyi Hochr.) cuttings. This study used a Completely Randomized Factorial De…

Studi Poliembrio Biji Jeruk Sambal (Citrus X Amblycarpa (Haask.) Osche) Seba…

Jeruk sambal is one of the plants that is widely used by the community, including in Lubuk Alung District, Padang Pariaman Regency, West Sumatra, one of which can be used as a rootstock because it’s tolerant to Citrus Tristeza Virus (CTV). The requirements for good rootstock are seeds that have high polyembryonic properties, can unite with the scion, can adapt to various types of soil, and ar…

Uji Fitokimia Dari Daun Tembesu (Fagraea Fragrans Roxb.) Berdasarkan Perbedaa…

Tembesu (Fagraea fragrans Roxb.) is one of the woody plants that has high economic value. This plant also has the secondary metabolites that can be utilized as traditional medicine, cosmetics and perfumes. This study aims to determine the compound of metabolite in Tembesu leaves based on the age level of the leaves. This research was carried out extraction of Tembesu lead by Maceration method u…

Kualitas Spermatozoa Sapi Bali Selama Kriopreservasi Pada Pengencer Tris-Kuni…

Freezing during cryopreservation causes lipid peroxidation in the plasma membrane of spermatozoa. Vitamin E contains antioxidants that can inhibit the formation of free radicals. The study aimed to determine the effect of vitamin E in egg yolk tris diluent to improve sperm quality during cryopreservation with different freezing times on motility, viability, and recovery rate of Bali cattle sper…

Respon Pertumbuhan Eksplan Petiol Tembesu (Fagraea Fragrans Roxb.) Dengan Pen…

Tembesu (Fagraea fragrans Roxb.) is a potential wood plant that is commonly used in heavy and domestic construction. The bark of the stem, branches and leaves of tembesu can also be used as a medicine to reduce heat and dysentery. The demand for tembesu that increases from year to year without being followed by tembesu cultivation results in a decrease in tembesu stands in nature. Planting temb…

Uji Fitokimia Dan Aktivitas Antioksidan Daun Ketapang (Terminalia Cattapa L.)

Ketapang (Terminalia catappa L.) is a plant grown in the tropics for shade plants. Ketapang leaves are a part that is often used in aquaculture as antibacterial, antifungal and antiparasitic. This study aims to determine the content of secondary metabolite compounds and antioxidant activity in ketapang leaves, namely brown leaves and red leaves. The preparation of ketapang leaf extract is carri…

Uji Kompatibilitas Persilangan Anggrek Dendrobium Secara Interspesies Dan Res…

New types of hybrids can be created through crosses between species that have unique characteristics. One of the necessary pieces of information for a successful crossover is compatibility. In order to compare and find out the compatibility, it is necessary to cross it back and forth (reciprocal). The aim of this research is to determine the compatibility of interspecies crosses and the recipro…

Pengaruh Model Project Based Learning (PjBL) Terintegrasi Stem Dalam Meningka…

21st century education emphasizes the development of higher order thinking skills (HOTS), including creative thinking. The PjBL model is suitable for integration with the STEM approach because it can stimulate students to think critically and creatively in planning projects, designing to produce their best products.The research aims to find out the effect of the STEM-integrated PjBL model …

Penerapan Model Pembelajaran Kooperatif Tipe Stad Untuk Meningkatkan Hasil Be…

Telah dilakukan penelitian tindakan kelas dengan model pembelajaran koopertif tipe STAD di SDN 005 Rokan IV Koto dengan menggunakan model pembelajaran Koperativ Tipe STAD pada konsep Penyesuaian diri Makhluk Hidup dengan lingkungannya, yang dilakukan dari bulan November sampai Desember 2007. Subjek penelitin ini adalah siswa kelas V SDN 005 Rokan IV Koto yang beijumlah 13 orang. Parameter…

Paya Meningkatkan Hasil Belajar Biologi Melalui Model Pengajaran Langsung (DI…

Telah dilakukan penelitian tindakan kelas untuk meningkatkan hasil belajar IPA Biologi melalui Model Pengajaran Langsung (DI) di Kelas VI B SD Negeri 002 Tampan Pekanbaru. Penelitian dilaksanakan pada bulan November 2007 sebagai subyek penelitian adalah sebanyak 23 orang, 12 laki-laki dan 11 perempuan. Parameter yang diukur adalah hasil belajar siswa yang mencakup daya serap, ketuntasan b…

Kualitas Spermatozoa Sapi Bali Dikriopreservasi Dalam Pengencer Tris Kuning T…

This research aims to determine the effect of giving green tea leaf extract (Camellia sinensis) in egg yolk tris diluent to improve the quality of Bali bull semen in the cryopreservation process based on the values of motility, viability, and recovery rate of spermatozoa. The research was conducted at the Riau Province Livestock Artificial Insemination Unit in January 2023. Semen was collected …

Keanekaragaman Serangga Pada Lahan Pertanian Padi Sawah Di Kampung Bungaraya …

This research was conducted to determine the diversity of insects in lowland rice farming in Bungaraya Village, Siak Regency as a biology pocket book design for class X SMA. The study was carried out in lowland rice farming in Bungaraya Village for insect sampling. Meanwhile, insect identification was carried out at the Laboratory of the Biology Education Study Program, Department of Mathematic…

Peningkatan Hasil Belajar Sains Dengan Menggunakan Media Gambar Pada Siswa K…

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Analisis Sekuens Barkode Dna Trnl-Trnf Intergenic Spacer Pada Tumbuhan Lopa…

viii ABSTRACT Annual herbaceous plants known as “lopang plants” have been cultivated in the province of Riau. There are numerous regional names for this plant, including lopang, lapang, kanjat, kisik utan and Gymnopetalum cochinchinense L. is the scientific name for this plant. These regional names may be unclear and give rise to disagreements when choosing a name for this plant species. …

Kualitas Perairan Anak Sungai Cikotuk di Kabupaten Kampar Berdasarkan Bioindi…

ABSTRAK Telah dilakukan penelltian untuk mengetahui kualitas perairan anak Sungai Cikotuk di Kabupaten Kampar berdasarkan bioindikator zoobenthos pada bulan Februari sampai dengan bulan April 2008. Penelitian ini menggunakan metode survei dengan pengambilan sampel dilakukan pada enam stasiun. Parameter utama yang diukur adalah komposisi jenis, kelimpahan, keanekaragaman, dan dominansi. Se…

Penerapan Model Pengajaran Langsung ( Direct Instruction ) Untuk Meningkatkan…

Penelitian Tindakan Kelas dengan Menerapkan Model Pengajaran Langsung (Direct Instruction), bertujuan untuk Meningkatkan Hasil Belajar IPA Kelas VI SD Negeri 31 Pinggir Tahun Pelajaran 2008 / 2009. Penelitian dilakukan pada bulan November - Desember 2008. Subjek Penelitian adalah siswa kelas VI SD Negeri 31 Pinggir yang berjumlah 20 orang, 10 orang siswa laki - laid, 10 orang siswi perempu…

Kemampuan Tanaman Air Sebagai Fitoremediator Limbah Cair Pabrik Pengolahan …

Liquid waste from palm oil processing factories is the main waste so it has the highest potential as an environmental pollutant. Waste treatment can be done by phytoremediation using water plants. The purpose of this research was to determine the ability of L. flava, P. stratiotes, and I.aquatica plants as phytoremediation in processing palm oil liquid waste. The research used a Completely Rand…

Identifikasi Cacing Tanah Di Tempat Pembuangan Akhir (TPA) Muara Fajar Untuk …

This study aims to identify the types of earthworms and their potential to produce electronic LKPD designs on the concept oligochaetes in class X even semester KD 3.9 and 4.9. This research was carried out from August to September 2021 at Muara Fajar landfills and Laboratory of the Biology Education Study Program. This research consist of two stages, namely the research phase I is a descriptive…

Kemampuan Tumbuh Eceng Gondok (Eichhornia Crassipes) Pada Beberapa Konsentras…

The tofu industry has the potential to produce liquid waste containing high levels of organic and inorganic materials, which may cause environmental pollution. Efforts to overcome pollution caused by waste can be made by phytoremediation using water hyacinth (E. crassipes). The purpose of this research was to determine the ability growth of water hyacinth (E. crassipes) to grow at several conce…