01 Online teaching competence enhancement:understanding open university teachers’perception from the perspective of structuration theoryXia Zhang,Tengfei Ma,Jinglu Liu,Chao Ye and Linyan Ruan

10 Facilitating active aging in the new era:setting standards for constructing open universities for the elderly Shuyu Wen,Bing Li and Xingyan Mu

19 Multimodal data-enhanced research in education sciences:development trajectory and challenges Hongchao Peng and Yuqing Jiang

27STEM education:dilemma and reflection Mang Li and Changqiu Yi

34 Core elements,problems and prospects of student innovation ability:a systematic review of publications in core Chinese journals Baichang Zhong and Jiaxin Gong

44 Analyzing teaching characteristics and interaction patterns of STEM classroom from the perspective of multi-dimensional evaluation Yiling Hu,Qidi Zhang and Bian Wu

53 Performance assessment of STEM teachers'teaching competence:model construction and verification Junhao Shan and Hanbing Yan

61 Towards constructing a social interaction network highlighting both quantity and quality:methodological innovation and verificationXuanyu Zhou,Li Chen,Yujuan Guo,Qinhua Zheng and Xuan Li

69 Privacy protection for educational apps:evaluation indicator construction and the status quo in China Qing Li,Mingxue Su and Hanyun Nie

78 Abstracts

80 Contents