Kristianti, Tati, Ari Widodo, and Sony Suhandono. 2019. “THE CONCEPTUAL CHANGE ASSESSMENT BASED ON ESSAY QUESTIONS IN CASE STUDY OF DNA/RNA AND INTRON TOPICS”. JPPIPA (Jurnal Penelitian Pendidikan IPA) 4 (1):31-37. https://doi.org/10.26740/jppipa.v4n1.p31-37.