id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fet-4280	Berge, Ph.D., Zane L.	Secret of Instructional Design Revisited	2021	11	.pdf	application/pdf	4431	235	48	Instructional design principles for 21st century learning skills. For instance, Stauffer (2020) categorized 21st century skills that include learning skills, literacy skills, and life skills:	cache/fet-4280.pdf	txt/fet-4280.txt