id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
hassl-4046	Klaharn, Rungrudee; Chaleoykitti, Saisamorn ; Chakchaichon, Chukiat 	Developing an active learning model using problem-based learning to enhance the 21st century skills 	2025	13	.pdf	application/pdf	6676	466	47	This research and development is expected to improve student teachers skills and help them adjust and prepare for future careers. Therefore, the components of PBL model after assessing quality are shown in Figure 2.	cache/hassl-4046.pdf	txt/hassl-4046.txt