Ratchawet, A. ., Aiamkran, N. ., Khadsai, S. ., Intharavisit, T. . and Chaijalear , Y. . (2025) “Science Learning Management That Integrates Three Conceptual Levels of Chemistry about Polymer to Promote Scientific Conception Perception for Secondary School Students”, Journal of Practical Studies in Education , 6(4), pp. 105-113. doi: 10.46809/jpse.v6i4.128.