Por qué?

Al final de cada página de este libro ilustrado, el lector tiene que elegir entre dos caminos a seguir por el protagonista, creando así su propia aventura. Los personajes y las situaciones de los cuentos tradicionales se entrelazan en un laberinto de 1001 posibles historias.

Learn how to sort by color and shape! This Spanish book introduces students to the concept of sorting objects. With images that are easy to identify and clear, simple sentence structures, this science reader simplifies scientific concepts for young students as they improve their reading skills. A fun and easy science experiment and Your Turn! activity provide more in-depth opportunities for additional learning. Nonfiction text features include a glossary and an index. Engage students in learning with this dynamic text!

Readers will learn about the important relationship between producers and consumers as well as buyers and sellers and how they all work together to create a healthy economy. This instructive volume defines basic economic concepts like goods and services and explains production with examples of the different types of production. It also covers the primary and secondary industries that produce goods. Concepts such as marketing and advertising are also covered, for a well-rounded view of this fascinating aspect of the economy.

Justo cuando más se preguntaba acerca de cómo sería su vida ahora que comenzara a usar brasier, una joven se percata de que todos los brasieres de su mamá han desaparecido. A partir de este extraño suceso, madre e hija se volverán cómplices entrañables en la lucha contra el causante de todo: el cáncer de mama.

"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 the film Jurassic Park. Take a trip through dinosaur time to meet these deadly dinosaurs face-to-face: The Variraptor had pointy teeth with grooves like steak knives to saw through meat! The Draeomaeosaurus was the first raptor ever discovered. It had a very large brain! The Microraptor was ...