Hermanas de Azul

The sun is responsible for all life on Earth, but what exactly is it? Our star is an amazing force that can be as dangerous as it is important. From solar flares to the threat of blowing up altogether, the sun is one of the most interesting things in our solar system. Readers take a trip to the sun to see how it works and exactly what it is made of. They’ll learn about the life cycle of a star and see just how long we have until we have to find a new planet to call home. Don’t worry, they’ll be happy to learn that (hopefully) we have millions of years left!

There's so much more to heat than hot and cold! How it moves, keeps us warm in the winter, and helps us cook our food is all part of this key science topic. Inside a colorful layout, the main text is written with struggling readers in mind, giving clear, concise explanations in understandable language to propel these readers to classroom success. Graphic organizers reinforce important topics for visual learners and those using the books as a "crash course" review of heat.

Georgina L�zaro presents the life of Rub�n Dar�o, father of Modernism, in this new addition to the award-winning series Cuando los grandes eran peque�os

¿Por qué tantas culturas han permitido el asesinato de las niñas recién nacidas? ¿Por qué los hombres se creen superiores a las mujeres? Marvin Harris responde a estas y muchas otras preguntas demostrando que Caníbales y reyes, esclavos y ciudadanos, madres e hijas, padres e hijos las culturas a que todos ellos pertenecen han de asumir en cada caso sus pautas culturales dentro de un proceso global de adaptación de las sociedades a su entorno.