Pythagoras and the Ratios: A Math Adventure - Ellis, Julie

Pythagoras and his cousin Octavius want to win a music contest but first they must figure out how to play their musical instruments in unison, something that's never been done before. Pythagoras makes an important discovery-notes that sound pleasant together have a certain mathematical ratio. When Pythagoras applies this ration to his cousin's ...

Pythagoras and the Ratios: A Math Adventure 2010, Charlesbridge Publishing

ISBN-13: 9781570917769

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Pythagoras and the Ratios: A Math Adventure 2010, Charlesbridge Publishing

ISBN-13: 9781570917752

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Pythagoras and the Ratios: A Math Adventure 2010, Perfection Learning

ISBN-13: 9781606866238

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