Claim Missing Document
Check
Articles

Found 3 Documents
Search

Uji Aktivitas Antibakteri Dari Ekstrak Daun Sirih Terhadap Bakteri Bacillus cereus Hasibuan, Ali Ahmatul Umri; Br Tarigan, Grace Amelia; Ulfah Rambe, Khadra; Tarigan, Sisilia Anabina; Sulistyarini Gultom, Endang
Jurnal Biologi dan Pembelajarannya (JB&P) Vol 11 No 1 (2024): APRIL 2024
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jbp.v11i1.21662

Abstract

This study elucidates the role of secondary metabolites in green betel leaves (Piper betle) as antibacterial agents against Bacillus cereus, a bacterium causing various foodborne illnesses in humans. The experimental research was conducted at the Biology Laboratory, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, utilizing Bacillus cereus bacterial isolates and extracting betel leaves using water. The measurement of inhibition zones was performed to evaluate the antibacterial activity of the betel leaf extract. The research results indicate the presence of an inhibition zone against Bacillus cereus growth, albeit categorized as weak. The measurements varied across repetitions, namely 2.6 mm, 3.35 mm, and 1.05 mm. The average of these three results was 3 mm.
Pengembangan MONOLI (Monopoli Lingkungan) Berbantu Teknologi QR Code Untuk Meningkatkan Kemampuan Literasi Sains Siswa Pada Materi Pencemaran Lingkungan Hasibuan, Ali Ahmatul Umri
Jurnal Biologi dan Pembelajarannya (JB&P) Vol 11 No 2 (2024): Oktober 2024
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jbp.v11i2.23553

Abstract

This study aims to develop and evaluate the “Environmental Monopoly” learning media based on QR Code technology to enhance students’ science literacy on environmental pollution material. The methods used include validation by subject matter experts and education practitioners, as well as feasibility testing with students. The results indicate that this media has good feasibility with validation scores of 72.5% for content feasibility, 75% for presentation, and 68.75% for language. Trials in seventh-grade classes showed that 92% of students felt more active, 85% showed improved understanding of the material, and 88% expressed satisfaction with the use of this media. These results suggest that “Environmental Monopoly” can be an effective and innovative learning tool to improve students’ science literacy.
Pengembangan Monopoli Berbantuan Teknologi QR Code Sebagai Media Pembelajaran IPA Pada Materi Keanekaragaman Hayati Indonesia di SMP Negeri 27 Medan Hasibuan, Ali Ahmatul Umri; Khairiza Lubis; Masdiana Sinambela; Wina Dyah Puspita Sari; Widia Ningsih; Koriatul Jannah Siregar; Al-Murizka Annisa; Sunita Karin Purba; Ghania Dhia Ulhaq Lubis
Jurnal Biologi dan Pembelajarannya (JB&P) Vol 12 No 1 (2025): APRIL 2025
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jbp.v12i1.24840

Abstract

Penelitian ini bertujuan untuk mengembangkan permainan monopoli berbantuan teknologi QR Code sebagai media pembelajaran IPA pada topik keanekaragaman hayati Indonesia. Penelitian dilakukan di SMP Negeri 27 Medan. Model pengembangan yang digunakan dalam penelitian ini adalah ADDIE, yang mencakup tahapan Analyze, Design, Development, Implementation, dan Evaluation. Media monopoli ini divalidasi berdasarkan tiga aspek: materi, media, dan asesmen. Hasil validasi dari ahli materi memperoleh skor 85,38% (sangat layak), ahli media memperoleh skor 91,54% (sangat layak), dan ahli asesmen memperoleh skor 93,3% (sangat layak), dengan rata-rata keseluruhan validasi sebesar 90,74%. Respons guru menunjukkan skor tertinggi pada aspek visual (93,75%), sedangkan respons siswa menunjukkan skor kelayakan keseluruhan sebesar 91,13%, dengan aspek keterarikan memperoleh skor tertinggi sebesar 93,12%.