La Doctora Vitamina

With sugar skulls, sweet-smelling marigold petals and joyful songs, Hispanic families welcome back ancestors on this holiday.

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.

Swamps are one kind of wetland biome. Like other wetland biomes, a swamp’s water must be clean in order for the wildlife in it to thrive. Readers learn the main features of both freshwater and saltwater swamps, as well as where some of the biggest swamps are on Earth. Science curriculum topics such as food chains and conservation make the main content a great complement to classroom learning. Full-color photographs and inset maps aid readers in identifying this interesting biome in the world around them.

La construcciOn de las pirAmides de Egipto es uno de los sucesos mAs importantes y mAs estudiados de la historia. AsI que nos metemos en la piel del FaraOn Keops y descubrimos sus sueNos de grandeza. En una civilizaciOn en sus albores, con pocos recursos tEcnicos y muchos recursos econOmicos y humanos.