Tras las huellas del ADN

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.

La nueva serie de ALEXIA PUTELLAS, jugadora profesional de fútbol. ¡Para las superfutbolistas del futuro! Alexia sueña con ser futbolista profesional. Y, para cumplir su sueño, ¡juega al fútbol a todas horas! Pero, cuando ella y sus amigos llegan al campamento de verano al que los han apuntado sus padres, descubren que allí está prohibido. ¿Será este el peor verano de Alexia? Sin embargo, Alexia es capaz de montar un equipo de fútbol en cualquier lado… ¡aunque sea a escondidas! Con la ayuda de sus amigos, hará lo imposible para conseguirlo: escaparse por la noche, enseñar a...

Answers such questions as "Qué son los perros?, Qué come mi perro?, Qué mas necesita mi perro?, Qué puedo hacer por mi perro?, Qué puede hacer mi perro?"

George Washington Carver was a skilled botanist who became famous for his work with peanuts and other plants. Readers will discover the captivating life of this incredible scientist in this engaging scientific biography translated in Spanish. Using colorful photos and graphs, children will learn why Carver was known as "The Plant Doctor" as a child and how his work with peanuts, sweet potatoes, and pecans helped change the way people used plants! The helpful glossary and index aid in better understanding of the content, while a simple, interesting experiment leaves Spanish-speaking children...