Mezclas y soluciones (Mixtures and Solutions)

Did you know that early explorers initially thought that California was an island? Learn how California was discovered with this Spanish book that focuses on the history of California. Students will learn about the contributions of Henry Hudson, Juan Rodriguez Cabrillo, Hernan Cortes, Francisco de Ulloa, and Sir Francis Drake. With a visually appealing layout, this primary source book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. Packed with information and primary source maps, images, and ...

What’s the difference between a seal and a sea lion? These “second cousins” of the sea look similar, but there are many ways to tell these creatures apart. From ear shape to the noises they make to communicate, seals and sea lions are amazing creatures with both shared features and many truly unique attributes. They both share an ocean habitat, but when readers take a closer look, it’s easy to discover how they each fight off predators, mate, and raise their young in different ways. Captivating full-color photographs help to bring these marvelous mammals to vivid life.

The ability to work in teams, communicate effectively, and improve efficiency make for highly successful professionals. Written in easy-to-access language, this book aligns with the Core Curriculum requirement of teaching students how to develop research projects that are similar to those they might face in their careers. It also provides guidance on building and participating in teams, bolstering interpersonal skills, and developing assertiveness. This volume contains concrete, real-world examples of actions students can take now to help them attain their desired futures.

El racismo constituye una de las páginas más vergonzosas de la historia contemporánea. Una ideología del odio que ha marcado las relaciones entre las culturas y las naciones de nuestro tiempo presente. El presente libro trata de acercarse a las raíces históricas e ideológicas de la doctrina racista, a su desarrollo mundial durante los siglos XIX y XX y a su ocaso en nuestros tiempos. La cuestión se expone con un lenguaje claro, pero a la vez riguroso y muy contrastado, exponiendo numerosas citas de especialistas en el tema, o de las propias fuentes originales.