Retno Dwi Suyanti, (Scopus ID: 57193917052; SINTA ID: 6032250) Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Medan, Medan, Indonesia, Indonesia
Anna Permanasari, (Scopus ID: 57190941776; SINTA ID: 5986654) Department of Science Education, Universitas Pendidikan Indonesia, Bandung, Indonesia
Ely Djulia, (SCOPUS ID: 57216123099) Program Studi Pendidikan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Medan, Indonesia