Clara Barton

Young readers may have heard about the benefits of using and making the most of their resources, but how does that factor into an economic discussion? This thorough discussion defines resources and describes the different types of resources and why some divide them into three categories and others choose four. The book also addresses the concept of scarcity, showing readers how, because all resources have their limits, it is important to use them responsibly and efficiently in a healthy economy.

"La fábula de la Montaña Mágica" nos hace creer de nuevo en los misterios del bosque, de los árboles, las plantas y los animales. Enanos, ninfas del aire y seres de la oscuridad, rescatados de los cuentos de hadas, nos acercan a su propio universo en el que todo puede ocurrir y en el que a cada vuelta del camino encontramos una aventura aún más fantástica. Un mundo mágico se esconde en el interior de una montaña muy especial, donde la más increíble de las historias nos espera para poder salvar no sólo la Montaña Mágica, sino también todo el planeta. ¿Podrán los protagonistas...

When the Japanese attacked Pearl Harbor in 1941, it prompted the United States to enter World War II on multiple fronts. From Africa to Europe, the Pacific to the home front, explore the American experience of World War II through the first-hand documents of the war.

Think there's just one fairy tale with an overworked girl and wicked stepsisters? Think again! Cultures all around the world have their own Cinderella stories. Visit Canada, China, Egypt, and France, and find out whose "glass slippers" are made of red silk, and whose "fairy godmother" is a fish. Fully translated Spanish text.