The Adventures of Ruby Pi and the Math Girls

<p><span style="color: rgba(0, 0, 0, 1)">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? </span><em style="color: rgba(0, 0, 0, 1)">Only one bullet left.</em><span style="color: rgba(0, 0, 0, 1)"> Time to find out ...</span></p><p><span style="color: rgba(0, 0, 0, 1)">Third Aunt is dying. The doctors from Uttarapatha charge exorbitant fees for their visit. Jayani, heroine of "Volumes of a Kiln," makes a desperate set of new calculations to save Third Aunt's life. Will she find the solution in time? Will the villainous Al-Layth ibn Al-Saffar thwart her?</span></p><p><strong style="color: rgba(0, 0, 0, 1)">A collection of adventure stories.</strong><span style="color: rgba(0, 0, 0, 1)"> Resourceful girls coming of age and changing history -- using mathematics.&nbsp;&nbsp;</span></p><p><span style="color: rgba(0, 0, 0, 1); background-color: rgba(255, 255, 255, 1)">Rupa plays Sherlock Holmes when she looks into the mysterious death of one of England's (and India's) foremost mathematicians. Her investigation arouses powerful forces. Ruby finds Bayes Rule to be a most useful tool as she combats deadly danger and international intrigue. In the story's climax, Rupa is ambushed on a foggy night, on a London wharf ...</span></p><p><span style="color: rgba(0, 0, 0, 1)">Math girl Uly takes the train to Moscow to collect an award for her work in Derivations. As usual, her beautiful, red-headed sister Sasha steals all of the attention. When the family arrives to stay with a professor cousin, Uly becomes entranced with the Maya tablet the professor (Yuri Knosorov) is studying. Who will emerge when the ensuing code-breaking triggers fateful events for the family?</span></p><p><span style="color: rgba(0, 0, 0, 1)">"Brilliant ..."&nbsp;</span><em style="color: rgba(0, 0, 0, 1)">Julie Porter, Bookworm Reviews</em></p><p><span style="color: rgba(0, 0, 0, 1)">"Wonderful reads ... an invaluable addition to any library. These stories </span></p><p><span style="color: rgba(0, 0, 0, 1)">represent the missing link between math entertainment and education that young learners have long needed."</span></p><p><em style="color: rgba(0, 0, 0, 1)">-- Diane Donovan, Editor, Bookwatch</em></p><p><span style="color: rgba(0, 0, 0, 1)">"We must teach mathematics from different points of view and different perspectives, as Tom has done in this collection of stories."</span></p><p><em style="color: rgba(0, 0, 0, 1)">-- Sandra Uve, Author "SuperMujeres, SuperInventoras," from her Foreword</em></p>