http://www.helium.com/knowledge/78981-teaching-addition-to-children-tips-to-teach-carrying-and-borrowing.xml Helium.com > Learning Styles & Skills > Teaching addition to children: Tips to teach carrying and borrowing en-us Copyright Helium.com Mon, 05 May 2008 19:39:55 GMT Mon, 05 May 2008 19:39:55 GMT