Imaginación con René Descartes

Rabbit burrows play an important part in the life of a rabbit. A burrow provides a place to live, a place to raise baby rabbits, and a place to stay safe from predators. This volume, which was written to support elementary science curricula, examines the role a burrow plays in the survival of a warren, and how that in turn helps rabbits contribute to ecosystems around the world. The text’s age-appropriate, science-rich content focuses on rabbit behavior and encourages readers to draw connections between what they learn in science class and what they see outside. This text is complemented by ...

Describes the voyage of Apollo 11, its three astronauts, and details of the mission that put the first man on the moon in 1969.

Ésta es la historia de Abul Qasim, el médico del califa Abderrahmán III. Abul operaba cataratas, hernias y bocios; hacía traqueotomías, trepanaciones, amputaciones y, incluso, intervenía cólicos misereres.

La hermana mayor de Philip, Helen, se ha casado, y el debe mudarse con su hermanastra Lucy. Para sobrellevar su nueva vida, Philip decide crear una de esas ciudades magicas que antes construia con su anorada Helen. Pero una noche cae en un profundo sueno que le adentra en un mundo extrano.