id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
concept-139	none	The Calculator in the Elementary Classroom: Making a Useful Tool Out of an Ineffective Crutch	2003	13	.pdf	application/pdf	4325	243	46	The purpose of this paper is to review research that addresses both the positive and negative effects of calculator use in the primary grades. One study showed a direct correlation between teacher training and calculator use.	cache/concept-139.pdf	txt/concept-139.txt