id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
dialog-552	Keefe-Cooperman, Kathleen	Preschooler Digital Usage and Visual Spatial Performance: Implications for the Classroom	2016	6	.pdf	application/pdf	2251	125	60	b Digital device usage time has been collapsed into categories: 15 – 30 minutes; 30 – 45 minutes; 45 – 60 minutes. b Digital device usage time has been collapsed into categories: 15 – 30 minutes; 30 – 45 minutes; 45 – 60 minutes.	cache/dialog-552.pdf	txt/dialog-552.txt