Desde que somos tijera y papel

When the Louisiana Territory was added to the United States in 1803, it about doubled the size of the young nation. It took years to clarify its boundaries and explore every square mile. How this momentous purchase came to be and its implications on the future of the United States are explained in detail in this book. Uncomplicated maps and simple language help developing readers and those in need of review to understand the many changes in this land that started with its purchase in 1803.

Insectos is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.

"Discusses the role of the oceans on Earth and introduces waves, tides, and water pressure"--Provided by publisher.

Dropboy es una serie de libros donde el personaje del título que se convierte en líquido, se involucra en muchas aventuras. Defiende a sus amigos Andy, Takao, Anny y Roa del malvado villano Doc Folly, su secuaz Roig y los murciélagos azules Frit y Frat. Son muchas aventuras llenas de acción con un mensaje único: la amistad por encima de todo. En este libro Dropboy debe salvar a la pandilla ya sí mismo de los ataques de los murciélagos azules Frit y Frat en aventuras llenas de acción.