id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iberica-613	Liu, Hao; Qiu, Hu; Zhang, Zuocheng	Flipped classroom in ESP teaching and learning: An Activity Theory perspective	2022-12-13	22	.pdf	application/pdf	8947	434	53	While videos are preferred by most teachers and students as out-of-class learning material (Herreid & schiller, 2013; Long et al., 2016), their impact on student learning is unclear. According to Das et al. (2019), pre-class videos had a positive influence on student learning.	cache/iberica-613.pdf	txt/iberica-613.txt