Purwandari, Bernadetta Ersi, S Supriyatin, and Rizhal Hendi Ristanto. 2022. “The Development of Creative Thinking and Problem-Solving Skill Instrument of Plant Growth in High School”. Biosfer: Jurnal Pendidikan Biologi 15 (2), 302-12. https://doi.org/10.21009/biosferjpb.26535.