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Pythagoras and the Ratios: A Math Adventure

Ellis, Julie / Hornung, Phyllis
Pythagoras and the Ratios: A Math Adventure
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 pipes and lyres, the result is music to his ears.

CHF 12.50

Pythagoras and the Ratios

Ellis, Julie / Peacock, Phyllis Hornung
Pythagoras and the Ratios
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 toge

CHF 20.50

What's Your Angle, Pythagoras?

Ellis, Julie / Hornung, Phyllis
What's Your Angle, Pythagoras?
Young Pythagoras can't seem to stay out of trouble. Every time he tries to help, people get angry. On a trip to Egypt, his curiosity helps him to discover the secret of the right triangle. This story is a clever introduction to the Pythagorean Theorem. Full color.

CHF 12.50