Lecturas 3o Primaria. Proyecto Everest Primaria

Aunque hoy en día el efecto invernadero aparece en la prensa con frecuencia, se le conoce desde mediados del siglo XIX y siempre se ha sospechado de la influencia de la actividad humana en él. Sin embargo, para constatar el efecto de calentamiento global actual y aceptar la responsabilidad del hombre en su rápido crecimiento, hubo que luchar contra intereses ligados al desarrollo industrial que supuestamente está sustentado por el conocimiento científico. "Esta historia empieza a principios del siglo XIX, cuando unos científicos descubrieron que nuestro planeta no siempre tuvo el mismo...

As a young boy, Jos Marti he traveled to the countryside of Cuba and fell in love with the natural beauty of the land. During this trip he also witnessed the cruelties of slavery on sugar plantations. From that moment, Mart began to fight for the abolishment of slavery and for Cuban independence from Spain through his writing. By age seventeen, he was declared an enemy of Spain and was forced to leave his beloved island. Marti traveled the world and eventually settled in New York City. But the longer he stayed away from his homeland, the sicker and weaker he became. On doctor's orders he...

Can you identify construction vehicles? Do you know what a harvester does in a wheat field? Discover the trucks and machines in this little book that will excite kids of all ages.

Una guía al mundo prehistórico de los dinosaurios con mapas, ilustraciones, texto, y extensiones gráficas.