id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
hx11xd09q13	Marie Claire Keultjes	Children's Understanding of Approximate Addition Depends on Problem Format	2010		.txt	text/plain	160	8	54	Recently, it was shown that preschool children have an advantage for canonical problems (i.e., arithmetic operations presented on the left-hand side of space). Children (M age = 7.93 years) viewed events that required them to add and compare large symbolic numbers, which disappeared quickly in order to get children to estimate.	cache/hx11xd09q13.txt	txt/hx11xd09q13.txt