Activity Homepage: http://activities.sugarlabs.org/addon/4533 Sugar Platform: 0.82 - 0.94 Download Now: http://activities.sugarlabs.org/downloads/file/27847/yupana-1.xo Release notes: Version 1 of Yupana, a counting device used by the Icans (similar to an abacus) Sugar Labs Activities http://activities.sugarlabs.org