La Séptima Vida

El sabueso de los Baskerville es la más famosa y para muchos la mejor aventura de Sherlock Holmes. La novela surgió de un comentario que escuchó Conan Doyle de su amigo Fletcher Robinson sobre un perro espectral que merodeaba cerca de su casa en Dartmoor. Fue publicada por primera vez como serial en The Strand Magazine en 1901, y al año siguiente en forma de libro debido a su enorme éxito. Desaparecido en las cataratas de Reichenbach cuando resolvía el caso de “El problema final” –última historia de Las aventuras de Sherlock Holmes (no 4 de El Canon)–, el gran detective...

Princess Diana lived much of her life in the public eye and suffered for it. She should not be remembered only for her fashion choices and her uncomfortable celebrity, but for her activism and generosity. Students will learn more about this fascinating and inspiring leading lady in this text that explores Princess Diana’s life and her social achievements.

If a person were ever face-to-face with a huge, hungry animal with sharp teeth, they probably wouldn’t care exactly what that animal was! But from a safe location, can we tell whether it was a crocodile or alligator that wanted to take a bite? By examining their jaw structure, teeth, and other physical features, we can easily tell these two animals apart! Graphic organizers and amazing images highlight each animal’s habitat and other small differences between the two fearsome creatures, showing readers just what creature is lurking below the waters.

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?).