Arizona, el Estado del Gran Cañon

Water is all around us. It moves through the water cycle. It brings water to all parts of the planet. Every living thing needs water to survive. Introduce students to the water cycle with this Spanish science reader that features easy-to-read text. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.

"Dino" Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children's books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these sea giants face-to-face: The Archelon was similar to a turtle, but its shell was made of crossed rib bone covered in rubbery skin! The Mososaurs had huge pointy jaws and grew to be fifty feet long! The Ichthyosaurs looked a lot...

Este libro reúne tres cuentos que transcurren en un viejo edificio de la Ciudad de México, protagonizados por los niños del tercer patio, acompañados de dos heroínas: Pau y Zitelina. En "El Pato cabalga", las diabluras de los chiquillos en la azotea terminan con la elevación al cielo de El Pato, el más travieso de todos. En "El secreto de la señora", Pau descubre el misterio que guarda celosamente la señora elegante, la dueña del edificio. Mientras que en "El esqueleto de Judy", los miembros del Club de Tinaco conspiran para rescatar el esqueleto de una elefanta llamada Judy (que se ...