An Analysis on the Influencing Factors of Learning Motivation Based in the Teaching Blending Online and Offline: The Mediating Role of Self-efficacy and Task valueLin Wei, Xiaoxue Chen, Mingyue Zheng, Li He, Xiaotong Zhang and Yuan GaoE3S Web Conf., 409 (2023) 03007DOI: https://doi.org/10.1051/e3sconf/202340903007