Khan/khan-exercises — Issue #4723: Addition 1 - work dosent show up on screen
Author: KhanBugz
Created: 2011-10-21 14:43:48+00:00
State: open
Labels: firefox, xp

[addition_1.html?seed=41&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/addition_1.html?seed=41&problem=0&debug)

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Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)

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