La aritmética del diablo

Sir Arthur Conan Doyle (1859-1930) creó el modelo más acabado de detective: Sherlock Holmes y su inseparable amigo y ayudante, el Dr. Watson. Su método deductivo para resolver cualquier enigma por difícil que se presentara, sobre un asesinato, robo o secuestro, se reveló infalible, quedando como modelo a seguir. Siempre con su lupa, su espectacular gorra y su capa de lana escocesa, sobresale entre la pléyade de grandes investigadores: Dupin, Hercules Poirot y el inspector Maigret, y una infinidad de personajes literarios. Contienen actividades de compresión lectora al final del libro....

Ten leading contemporary children's writers from Spain and Latin America--including Eliacer Cansino, Gloria Cecilia Díaz, Gonzalo Moure, and Ana María Shua--have created short stories based on the UNICEF's Charter of Children's Rights. Each one lends itself perfectly for classroom discussion. The complete text of the charter is included at the end of the book.978846960124\\The lone tree on Peace Street is rather grouchy. He especially does not like it when kids climb him. When autumn comes, his mood sours even more. He becomes so dried out, the town decides he must be cut down. The children ...

¿Tú también eres una chica mágica? Nana, Sofía, Alma y Zuri parecen chicas normales, pero en su interior esconden el increíble poder del Zodiaco. Transformadas en Aries, Libra, Leo y Cáncer, las cuatro amigas lucharán contra peligrosas criaturas para salvar el mundo y encontrar al resto de las chicas elegidas por las estrellas. ¿Conseguirán dar con ellas antes de que sea demasiado tarde?

Computer science is all around us, at school, at home, and in the community. Anyone can learn computer science, even at the elementary school level. This book delves into essential computer science concepts using age-appropriate language and colorful images. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience. The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.