La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

Learn the history of number systems with this engaging Spanish book! This text combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn place value while reading about the number systems of the Egyptians and Romans, and also learn important vocabulary terms like cuneiform, binary systems, roman numerals, and more! The full-color images, math charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and...

In this Spanish title, explore what stunt people do to prepare and keep themselves safe during their dangerous stunts.

Molecules and atoms can take the form of a solid, a liquid, or a gas. Each state of matter has its own properties. Together, these three states of matter make up most everything in the universe! Learn all about mixtures and solutions with this Spanish science reader that brings the power of science and informational text to students at a level they can understand. Introduce students to STEM topics and new concepts and vocabulary terms like solvent, polarity, compound, and solubility with this nonfiction book that is aligned to state and national standards. The leveled text supports students...

¿Qué es el arte moderno? ¿Por qué se ama o se odia? ¿Y por qué es siempre tan exageradamente caro?Will Gompertz, director de Arte de la BBC, exdirector de la Tate Gallery de Londres y uno de los mayores expertos del mundo, ha escrito una deslumbrante guía que cambiará para siempre la manera en que miramos el arte contemporáneo. Desde los nenúfares de Monet hasta los girasoles de Van Gogh, pasando por las latas de sopa de Warhol y los tiburones en formol de Hirst, este libro nos descubre la historia que hay detrás de las obras, las personas que hay detrás de los artistas y la...

The morning of August 24, AD 79, seemed like any other in the Roman city of Pompeii. So no one was prepared when the nearby volcano Mount Vesuvius suddenly erupted, spouting ash that buried the city and its inhabitants. More than 1,700 years later, in 1748, explorers rediscovered the port city with intact buildings and beautiful mosaics. This easy-to-read account is gripping and includes photos of the ruins.