Lee, G.-G., Choi, M., An, T., Mun, S., & Hong, H.-G. (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