Un día de trabajo de un astrónomo (A Day at Work with an Astronomer)

The nineteenth century was a time of huge growth and prosperity for California. Although the Gold Rush lasted only seven years, California provided other opportunities for those who emigrated there in search of a better life. This Interactiv-eBook focuses on the history of San Francisco, Los Angeles, Sacramento, and Fresno, and the people and events that influenced their transformations from small towns to booming cities. This nonfiction text builds literacy and social studies content knowledge through the use of intriguing primary source documents like maps, letters, images, articles, and...

Atraer, formar y retener el talento se ha convertido en un proceso trascendental del mundo empresarial moderno, llegando a tomar incluso tintes de una guerra por preservar a los individuos más capaces y talentosos en las filas de las firmas, corporaciones y organizaciones.A través de las páginas de esta obra se pondrán de relieve aspectos esenciales del talento, y se abordarán estrategias para su atracción, formación y retención. A la par, conocerás elementos como la importancia del retorno de inversión en capacitación, sugerencias efectivas de reclutamiento y atractivas formas de...

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

There is so much to explore in the Amazon! Readers are taken on an adventure through the Amazon rainforest to learn about the lush plants and beautiful animals, deforestation, and rainforest conservation in this fascinating, Spanish-translated nonfiction title that features striking photographs and riveting facts. This 6-Pack includes six copies of this title and a lesson plan.