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Ruby Pi Adventure Series eBook Series

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  • The Adventures of Ruby Pi and the Geometry Girls

    Teen Heroines in History Use Geometry, Algebra, and Other Mathematics to Solve Colossal Problems

    by Tom Durwood ...
    Series Book 1 - Ruby Pi Adventure Series
    Mocked and hounded by the other candy-stripers, Simone proves her worth when an enemy tank explodes the quiet of a French field hospital near Montcornet (May, 1940). An encrypted code holds the secret to a flaw in the tank's design. Boom ! Can Simone break the code in time?Young Shawnee Smith speaks truth to power when one of the world's great citizens visits her Florida home. Her idea can change ... Read more

    $6.99 USD

  • The Adventures of Ruby Pi and the Math Girls

    Teen Heroines in History Use Geometry, Algebra, and Other Mathematics to Solve Colossal Problems

    by Tom Durwood ...
    Series Book 2 - Ruby Pi Adventure Series
    Squinting through the rifle sight, Casey takes careful aim at the thief, on horseback, half a mile away and receding fast. The thief has the deed to the family's new ranch. Will Casey's calculations hold true? Only one bullet left. Time to find out ...Third Aunt is dying. The doctors from Uttarapatha charge exorbitant fees for their visit. Jayani, heroine of "Volumes of a Kiln," makes a desperate ... Read more

    $6.99 USD