La rana que no sabía que estaba hervida...

Una rana en una olla hirviendo, un brote de bambú que tarda en salir, una mariposa que lucha por salir de su crisálida... Todas estas parábolas sirven al autor como pretexto para hablar del ser humano.La primera fábula, que da nombre al libro, nos habla de una rana metida en un caldero y que, debido a la imperceptible subida de la temperatura, no se da cuenta de que la están cociendo. Esta historia le sirve al autor como punto de partida para advertirnos de los cambios que se van produciendo poco a poco a nuestro alrededor sin que nos demos cuenta, como la pérdida de valores en la...

Born into slavery, Frederick Douglass relied on his own determination and ingenuity to carve a path to freedom. Once free, he dedicated his life to improving the lives of others and fighting for justice and equality. This inspirational Spanish biography uses primary sources to engage students in learning about the fascinating life of Frederick Douglass. Students will build their literacy skills as they are immersed in social studies content. Text features include a glossary and an index to increase comprehension and academic vocabulary.

Integrate science, history, and math into literacy lessons with these high-interest, Spanish-translated books. Topics such as space exploration, endangered animals and money management are designed to engage and inform students. Sophisticated graphics, interactive text features promote critical thinking hand help students build vocabulary and increase visual literacy skills.

Ámbar y Azul, dos gemelas curiosas (aunque, a veces, demasiado graciosillas), emprenden un intrépido viaje en busca del misterioso ADN en compañía de Pío, un pollito sabio que conoce las respuestas a todas las preguntas. Los tres protagonistas se vuelven de tamaño microscópico y exploran una célula habitada por represores insufribles, ribosomas novatos, proteínas todoterreno y otras moléculas divertidas y estructuras celulares que ejercen un papel clave en los procesos que constituyen los fundamentos de la genética.

Following in his father’s footsteps, young Michael was off and running on the soccer field by the age of eight! Even though he was one of the smallest players, he was also one of the toughest. He was not afraid to get in there with the bigger players and grab that ball. He scored his first hat trick at age eleven and has been going ever since. An early re-injury took him out of the 2006 World Cup, but Michael Owen is still running strong and amazing soccer fans all over the world.