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84 bytes added ,  16:32, 28 June 2010
Line 47: Line 47:  
* hexadecimal button (hexadecimal abacus)
 
* hexadecimal button (hexadecimal abacus)
 
* fraction button (fraction abacus)
 
* fraction button (fraction abacus)
 +
* Caacupe button (fraction abacus with +/–)
 +
* Rod button (Cuisenaire-like abacus)
 
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|[[Image:Abacus-custom-toolbar.png|left]]
 
|[[Image:Abacus-custom-toolbar.png|left]]

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