La Constitución de Estados Unidos (The U.S. Constitution)

There are thousands of species of bees, and not all are yellow and black. However, the telltale yellow and black of the honeybee and bumblebee are the best known. Beginning readers explore the world of bees and find out what keeps them busy all day. From flying from flower to flower to making honey, the details in this book are both familiar and new to curious future entomologists. Full-color detailed photographs complement the low-ATOS text, making it the perfect addition to any early elementary library or classroom.

El tercer tomo de este ambicioso proyecto se introduce en el periodo más convulsionado (1930-1960) del siglo XX Si en el segundo tomo se constató que el sistema educativo fue exitoso en términos políticos y culturales, en este volumen vemos, más bien, cómo la educación se enfrentó, sobre todo, a las bondades y restricciones de la productividad económica y su impacto en el desarrollo social. Si en el periodo analizado los discursos enfatizaban las «reformas» llevadas a cabo por los gobiernos del Frente Popular, luego se comenzó a hablar de «crisis», yes que los deficientes...

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...

Un sencillo y, a la vez, profundo poema envuelto en audaces ilustraciones, nos cuenta que no somos lo que parecemos a simple vista. Nos hace una invitación a aventurarnos más allá de la apariencia para descubrir lo que cada uno realmente es. Un viaje apasionante.

Thomas Edison is considered by many to be one of the greatest inventors of all time. His creations changed the world, but there was more to his life than just his inventions. Readers of this engaging volume will learn all about the man behind the innovations. This fascinating biography introduces important subjects and encourages a further interest in history. Concise and accessible text paired with vibrant photographs is sure to captivate audiences of many ages and levels.