Vol. 13 No. 2 (2021): August

Published: 2021-07-23

Articles

Improving chemical learning outcomes with explicit instruction learning models with quizizz evaluation media

Bropson Minanlarat, Leony Sanga Lamsari Purba, St Fatimah Azzahra

94-102
- PDF
Development of student worksheet for blended learning based guide inquiry and science process skill in reduction and oxidation reaction

Sinda Febrilia Miharti, Harizon Harizon, Zurweni Zurweni

103-112
- PDF
Development of PBL-STEM-based E-LKPD to improve students' science literacy skills on reaction rate materials

Rina Safitri, Haryanto Haryanto, Harizon Harizon

113-129
- PDF
Microsoft teams 365 and online learning: The student™s perception

Leony Sanga Lamsari Purba

130-136
- PDF
Determination of phenolic contents and antioxidant activity test of ethanol extract of Sirih merah (Piper crocatum Ruiz & Pav.) leaves using the DPPH method

Kasta Gurning, Sifikal Lumbangaol, Risanti F. R Situmorang, Saronom Silaban

137-142
- PDF
Stability of Styrax benzoin extract and fraction with the addition of glycerol and tween 80

Dedi P Simatupang, Nora Susanti, Jamalum Purba

143-150
- PDF
Antibacterial activity test of Simargaolgaol (Aglaonema modestum Schott ex Engl) leaves extract against Escherichia coli and Salmonella typhi bacteria

Tiurma Solomasi Zega, Putri Mandaoni Pakpahan, Rahmayani Siregar, Givinda Sitompul, Saronom Silaban

151-158
- PDF
Paper making and characterization from waste coconut and tofu dregs

Erdiana Gultom, Hestina Hestina, Nova Florentina, Barita Aritonang

159-171
- PDF