Harmoko Harmoko
STKIP-PGRI Lubuklinggau

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Uji Validasi dan Kepraktisan Lembar Kerja Mahasiswa Berbasis Keterampilan Proses Sains Dian Samitra; Harmoko Harmoko
BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Vol 4 No 2 (2021): BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (810.202 KB) | DOI: 10.31539/bioedusains.v4i2.2500

Abstract

This study aims to test the validation and practicality of student worksheets (LKM) based on the science process skills of dragonflies in the invertebrate zoology course. The method used is Research and Development 4D model. The developed worksheets were tested for feasibility (validation) to material, media and language experts, and practicality tests to students. The results showed that the feasibility test (validation) of material experts, the LKM developed, had 81.17%. The validation results of media experts got a score of 89.60%; from linguists, it was 88.57%. The results of the practicality test for students earned a score of 80.51%. In conclusion, the student worksheet validation test results based on the science process skills of dragonflies in the invertebrate zoology course are very valid. The practicality test results for students are in the practical category. Keywords: Practicality, Process Skills, Worksheet, Validation
Daya Hambat Antibakteri Ekstrak Akar Rumput Bambu (Lophatherum gracile) terhadap Bakteri Streptococcus sp Secara In Vitro Pipi Deka Dianci; Wulandari Wulandari; Deah Lara Santi; Harmoko Harmoko
BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Vol 4 No 2 (2021): BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.285 KB) | DOI: 10.31539/bioedusains.v4i2.2788

Abstract

This study aimed to analyze the antibacterial activity of the root extract of the Suku Anak Dalam bamboo grass (Lophatherum gracile) against cough-causing bacteria (Streptococcus sp). The method used is laboratory-based experimental research with analytical descriptive type to test the root extract of bamboo grassroots on Streptococcus sp. Data analysis was carried out descriptively qualitatively by subtracting the diameter of the inhibition zone formed from the diameter of the disc that had been soaked with Lophatherum gracile extract. The treatments used consisted of 20%, 40%, 60%, 80%, 100% and positive control using amoxicillin. The results showed that at a concentration of 20%, the average inhibition zone formed was 2.03 mm, 40% concentration was 2.27 mm, 60% concentration was 2.61 mm, 80% concentration was 2.72 mm, 100% by 3.1 mm and positive control by 12 mm. In conclusion, bamboo grass root has a weak antibacterial ability and needs to be combined with other ingredients if you want to use it as cough medicine. Keywords: Antibacterial, Bamboo Grassroot, Cough, Anak Dalam Tribe, Streptococcus