Si crees que la educación es cara o cuesta mucho, prueba con la ignorancia.

Education is learning what you didn't even know you didn't know.
The greatest obstacle to discovery is not ignorance; it is the illusion of knowledge.
Daniel J. Boorstin.

10 mar 2012

QUIZ-MATH

http://www.thatquiz.org/

Interesante Web para hacer ejercicios de vocabulario, matemáticas básicas: Hora, figuras, etc.

Se puede escoger el nivel.