La naturaleza de la materia (The Nature of Matter)

Read Along or Enhanced eBook: Take a journey into the wild world of reptiles and amphibians! Readers will learn about crocodiles, lizards, snakes, tortoises, and salamanders. Featuring a glossary, index, colorful images and charts, intriguing facts, and clear, informative text, readers will be sure to be enthralled as they move through this engaging, Spanish-translated book.

Introduce students to immigration in America in the 1800s, and how it affected the United States. With this Spanish-translated book, readers will discover topics such as Ellis Island, Angel Island, and assimilation. Primary source images, fascinating facts, a glossary, and other features keep students engaged and help them better understand the social studies content.

La Santísima y Vera Cruz de Caravaca fue robada misteriosamente durante las fiestas de Carnaval de 1934 y hasta ahora nadie ha podido averiguar su paradero. Sus oscuros y discutidos orígenes y su extraña desaparición llenan su historia de enigmas sin resolver. Esta novela, a medias policiaca y a medias histórica, nos lo muestra con las aventuras de un caballero templario del siglo XIII y un inspector de policía del siglo XX, unidos por los misterios de la Cruz de Caravaca en los tiempos turbulentos de nuestra Guerra Civil de 1936 - 1939. La intención del autor al escribir esta...

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.

Provides a simple introduction to the work that teachers do and other aspects of a teacher's life through full-color photographs and straightforward, engaging text. Original.

Until just over 150 years ago, northern Mexico extended thousands of kilometers farther than its current border with the United States. Many different indigenous groups flourished in that region before the Conquistadors arrived. What we know about their lives and customs is the result of archeological discoveries and the chronicles of the first Spanish priests and soldiers that had contact with them.