Agujeros negros (Black Holes)

For many years, people believed there were nine planets that orbited the sun. Now we say there are eight. What happened to the ninth planet, Pluto? What are the different planets like? What exactly makes a planet a planet? These are the many intriguing questions answered with this high-interest book, crafted to be accessible for readers of all levels. Young astronomers will be especially fascinated by the stunning photographs and the "Make the Grade" fact boxes.

This Spanish-language series presents the complete range of math concepts and skills students are expected to master during the first grade. The series moves sequentially, from easiest to hardest concepts, with each book covering a different math topic. The first volume reviews the math concepts students learned in kindergarten. The next six books cover counting, adding and subtracting, tables and graphs, money, patterns, and measuring. The eighth volume is a summary of the math concepts students have studied throughout the year. Each book presents situations that show the relevance of math...

Colección de cuadernos independientes de los cuatro cursos de Secundaria. Para trabajar y consolidar todos los contenidos de la ESO de acuerdo a las necesidades de cada alumno.

Introduce students to what it takes to be a good leader using this Spanish-translated nonfiction book. Engaging, primary source documents and images that support the text will inspire children to practice being a good leader! Early readers will build their literacy skills and social studies content knowledge while learning about leadership.

El siglo XXI demanda nuevas habilidades, la tecnología exige progreso constante y el alto nivel competitivo en el mundo de lo negocios requiere que cada emprendedor y empresario tenga consigo un ejemplar de Trilogía de los Negocios. La Doctora Abigail le revela en este libro los principios de cada hombre y mujer exitosos han utilizado para lograr lo que hasta ahora tienen. Parece pretencioso el comentario, pero después de leer el primer capítulo usted estará de acuerdo conmigo que este comentario se queda corto. Al terminar de leer este tomo usted habrá adquirido conocimiento,...