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ISBN: 0309069955. Author: Mathematics Learning Study Committee; National Research Council; Committee, Mathematics Learning Study. Adding It Up: Helping Children Learn Mathematics. Sku: 0309069955-4-34210497.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.