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Title: THE PYTHAGOREAN ABACUS - PowerPoint PPT Presentation
Description: Using the numeric pad arrow keys, beads on the abacus can be pushed to ... Place the arrow on a bead in the direction you wish to push and press the space bar. ... – PowerPoint PPT presentation
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PPT URL: https://www.pythabacus.com/POWERPOINT/POWERQ/pythag~1.ppt
