The Adventures of Rubi Pi and the Aviation Girls: History of Flight in Stories

Paperback

$16.99

The Adventures of Ruby Pi and the Math Girls: Teen Heroines in History Use Geometry, Algebra, and Other Mathematics to Solve Colossal Problems

Paperback

$13.99

The Adventures of Ruby Pi and the Geometry Girls: Teen Heroines in History Use Geometry, Algebra, and Other Mathematics to Solve Colossal Problems

Paperback

$13.99