Primavera

Get a close-up look at animals in the zoo, from appearance to behavior to babies. This series uses vivid photos to compare life in the wild and life in captivity in terms of habitat, activity, and diet.

El primer tomo recrea los ultimos dias de Tula, la gran ciudad fundada por los toltecas. El segundo relato de esta obra se refiere a dos comunidades del valle de Mexico: Xochimilco, un pueblo agricola y Mexico-Tenochtitlan, la gran capital del imperio mexica. La narracion recrea la epoca en que muchos viajeros acudian a la gran ciudad para intercambiar sus productos.

As they say, necessity is the mother of invention, and this book introduces readers to 14 women who invented very useful, helpful items. They include Chicago native Margaret Wilcox who invented the car heater, Indiana native Marion O'Brien Donovan who invented disposable diapers, Pennsylvania native Stephanie Kwolek who invented Kevlar, and Austria-born actress Hedy Lamar whose secret communications systems led to the creation of WiFi, Bluetooth, and GPS.

In the winter of 1856, a storm delays the lighthouse keeper's return to an island off the coast of Maine, and his daughter Abbie must keep the lights burning by herself.

Follows the adventures of Max Axiom as he explains the science behind forces and motion. Written in graphic-novel format.