El Secreto de La Piramide + CD

Esta es la historia de Bart, el niño que soñó con las Súper-Ratas, un ejército de roedores entrenados para mejorar la vida de las personas. Pero lo que nadie esperaba es que ayudaría a salvar la vida de miles de personas. Gracias a su olfato, las ratas de Bart detectan minas terrestres por toda África y ayudan a la investigación de enfermedades como la tuberculosis. Con su amor por los animales, su creatividad y perseverancia, Bart ha contribuido a crear un mundo mejor. La historia de Bart Weetjens es la de alguien que, desde muy joven, se dio cuenta de que había cosas a su alrededor ...

Lyndon B. Johnson was born in Texas in the early 1900s. This appealing biography has been translated into Spanish and highlights Johnson's life as he represented Texas in the United States Congress for 24 years and became the 36th President of the United States. Through engaging images, intriguing sidebars and facts, easy to read text, and a supportive glossary and index, readers will learn about interesting topics such as the Higher Education Act, Voting Rights Act, Minority Whip, and the Vietnam War. Readers will be eager to learn more about Johnson's fascinating life as they move from...

Presents information about super jumbo jets, looking at the history and development of jets, discussing various aspects of design and construction, and exploring different types of jets, including the Concorde and the Airbus A380.

Describes various situations that demonstrate ways to make friends and the importance of being a good friend.