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!

Una colección de libros que combinan historia del arte con imágenes, espectaculares pop-ups y divertidas actividades para descubrir las obras y los artistas más reconocidos de todos los tiempos. Tras la Mona Lisa y Alexander Calder, ahora ponemos al alcance de los más pequeños la obra de un artista que revolucionó el mundo del arte: ¡el genial Andy Warhol!

When many think of the Constitution, they think of the Founding Fathers: Thomas Jefferson, John Adams, Benjamin Franklin...but neither Jefferson nor Adams even signed it. Facts like this will surprise readers, while further information will enlighten them about both the crucial document called the U.S. Constitution as well as about its creation and ratification. This essential volume is a significant addition to any elementary social studies collection.

Tercera entrega de la alucinante serie paranormal romántica «Psi/Cambiantes». Son dos seres rotos: él, un psi adiestrado para no tener sentimientos; ella, una cambiante que ha perdido lo mejor de su naturaleza. Pero están destinados a encontrarse. Cuando era soldado de élite de las fuerzas del Consejo de los psi, Judd Lauren se vio obligado a hacer cosas terribles en nombre de su gente. Ahora es un desertor y sus tenebrosas habilidades le han convertido en el más letal de los criminales: frío, despiadado, insensible. Antes de ser abducida, brutalmente torturada y mentalmente violada...

Examines the nature of human rights, including the gradual development of the idea that all people, regardless of gender, color, or wealth, are citizens with rights, not just subjects with duties, and discusses the growth of social rights and the case against torture.