El diablo de los números
5 stars
Excelente
library binding, 262 pages
Published April 25, 2008 by Paw Prints 2008-04-25.
The Number Devil
A Mathematical Adventure
5 stars
(1 review)
Annoyed with his math teacher who assigns word problems and won't let him use a calculator, twelve-year-old Robert finds help from the number devil in his dreams.