Ma, Zengpeng. “Protocol-Guided Teaching in Secondary Chemistry Education: An Analysis of the Learning Protocol for the Instruction of Omnipresent CaCO3 Based on Student Life Experiences”. Science Insights Education Frontiers 15, no. 2 (April 29, 2023): 2355–2364. Accessed April 18, 2026. https://www.bonoi.org/index.php/sief/article/view/1033.