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220 bytes added ,  11:13, 7 April 2012
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* Abacus also supports copy, so you can take a sum calculated on an abacus and export it into SimpleGraph or some other data-visualization Activities.
 
* Abacus also supports copy, so you can take a sum calculated on an abacus and export it into SimpleGraph or some other data-visualization Activities.
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* A fun collaborative mode might be to have a number randomly selected and each sharer work independently to post it on the abacus of their choice first. There could be a tally of beads awarded for each correct answer.
    
== Modifying Abacus ==
 
== Modifying Abacus ==

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