Matemáticas en Marte (Math on Mars)

The asteroid belt between Mars and Jupiter is an intriguing area of our solar system. Scientists have counted over 670,000 known asteroids there, but there could be millions more not yet found. Readers will discover much more about the asteroid belt in this highinterest book, which blends science and math. They'll read about several topics, such as space missions to the asteroid belt and the difference between an asteroid and a planet, and solve associated math problems-just like actual space scientists do!

Los niños exploraran vehículos del rescate incluyendo un camión de bomberos, ambulancia, coche de policía, helicóptero, y mas con este colorante libro que ofrece fotografías reales. Estudios revelan que a pequeños lectores les resulta mas fácil asociar los vehículos de la vida real en fotografías a diferencia de ilustraciones. Desde un camión de bomberos hasta un barco guarda costas, este libro muy útil tendrá a los niños ¡listos para el rescate! Otros libros en esta serie incluye: Maquinas Monstruo, Bebés del Corral, y Cucu-aca-ta en el Zoo.

During the American Civil War, the United States was on the brink of falling apart irrevocably. As states seceded and brother turned against brother, hope for reconciliation was dim. This conflict, an essential topic of the social studies curriculum, is skillfully presented from its origins in the Southern slave-trade economy to bloody battles and, later, Reconstruction. Striking photographs and artwork of integral events and people will resonate with readers, while interesting sidebar information gives them more to reflect on about this terrible war and the lessons it taught us.

"Describes living on a ranch including information about corrals, rodeos and roundups."--From source other than the Library of Congress

¡Embárcate en una aventura extraordinaria con Roblox! No importa si eres un novato o un experto robloxiano: esta guía es la compañera perfecta para triunfar en todas tus expediciones, tanto si tienes que escapar de una prisión de alta seguridad como evitar una fusión nuclear o luchar contra temibles bestias. Aquí encontrarás todo tipo de información, consejos y trucos, y hasta entrevistas con los creadores de los juegos.