Lee, Gyeong-Geon, Minji Choi, Taesoo An, Seonyeong Mun, and Hun-Gi Hong. 2023. “Development of the Hands-Free AI Speaker System Supporting Hands-on Science Laboratory Class: A Rapid Prototyping ”. International Journal of Emerging Technologies in Learning (iJET) 18 (01):pp. 115-136. https://doi.org/10.3991/ijet.v18i01.34843.