¿Foca o león marino? (Seal or Sea Lion?)

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.

El libro ofrece un material para aprender español de forma novedosa, utilizando los planteamientos recogidos en el Marco común de referencia y en los Niveles de referencia para el español, que permiten ayudar al alumno a conocer, comprender y utilizar el español de forma práctica. Está constituido por seis módulos. Cada módulo está formado por los cuatro ámbitos de uso de la lengua (Ámbito personal, Ámbito público, Ámbito profesional y Ámbito académico) para poder utilizar la lengua de una manera más adecuada a cada situación. Propone un aprendizaje activo, dinámico y...

Learn how division makes planning a birthday party fun and easy! This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will be engaged in reading about what is involved with planning the perfect birthday party, from buying enough food to shopping for the cake and decorations-and learn division along the way! The glossary, index, and table of contents will further understanding of reading and math concepts. The full-color images, practice problems, and math graphs and charts make...

For ages, the idea of machines that think and act on their own has gripped scientists, thinkers, and the general public. This book explores the history of artificial intelligence (A.I.), and how science fiction is quickly becoming science fact. It examines the technologies involved in A.I. and its inevitable effects on work, life, health, and many other aspects of human society. Rooted in history and science, this book provides an inside look at a topic that captivates engineers, scientists, and dreamers, but also raises important ethical issues and challenges how we see ourselves and our...

Se presenta una cuidada edición de uno de los manuscritos más antiguos sobre el arte de la navegación. Se trata del Ms. 46 de la Biblioteca General Histórica de la Universidad de Salamanca, cuya reproducción facsimilar se incluye a todo color, precedida de una detallada introducción, desdoblada en la doble vertiente histórica-astronómica, así como el estudio sobre las mismas, debidamente anotado por los autores, especialistas de referencia en sus respectivas disciplinas. Se completa con la transcripción, que facilita la comprensión, al corregir algunos aspectos erróneos en...