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Do Math Operation with Abacus 100

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Abacus 100 is simple tool that can be use for do calculation with abacus. With display number value, its will be guide and help to the children who firstly use abacus and do math calculation with it. You can download this app free at link below:

https://play.google.com/store/apps/details?id=com.priantos.abacus100

here the screenshot of Abacus 100 app



And if you want to know the basic idea how we build this app with Greenfoot, you can see at video tutorial below: