Polifemo, el cíclope

These biographies introduce young readers to important figures in American history. Ideal for reports and correlated to the social studies curriculum, the series presents a straightforward account of each individual's life and times and describes how each person contributed to the shaping of our nation.

Mathematics constitutes ideal material for exercising the art of learning and thinking. For this it is necessary that the classroom has a stimulating atmosphere which requires determined attitudes and beliefs. The book combines theory and practice and responds to questions such as these: to think in the mathematics class? on what does the knowledge of solving problems really consist of? what are the beliefs and which are the most common ones among the students? how to diagnose, evaluate and, in some cases to modify, the systems of beliefs of the pupil?).

Highlighting the increasing loss of values that modern society is suffering, a unique guide teaches the attributes of tolerance, communication, respect, and equality--keys to a happier coexistence and life.

“Perdidos” aborda el problema de la Extinción de las Especies desde un enfoque singular. Se toman ejemplos seleccionados de animales extintos, maravillosos en muchos aspectos, que hemos perdido para siempre, y se analizan exhaustivamente los factores que condujeron a esa pérdida. En cada caso, se releva y actualiza toda la información disponible de las especies analizadas, incluso aquellas que surgieron de investigaciones posteriores a su desaparición, reconstruyendo los hechos para tratar de comprender la cadena de sucesos, poniendo en manos del lector los datos que nos permiten...