Apuntes de matemáticas

While the Great Depression was indisputably a difficult period in American history, it did lead to certain developments that we still benefit from today. One for the most significant examples of this is Social Security, which helps a whole generation of retired Americans. The book offers a concise description of the Great Depression, including analysis of its causes and its effects. Chapters focus on different aspects of the period, including culture, the arts, and science and technology. The dynamic design displays images of posters and experiences from the Depression era. This informative,...

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute...

¿Sabías que el mismo viento que te revuelve el cabello puede usarse para generar energía? Pero, ¿cómo exactamente se aprovecha el viento? ¿Y cuál es el efecto sobre el medioambiente? Lee este libro para aprender todo sobre la energía eólica. Did you know that the same wind that messes up your hair can be used to create energy? How exactly do you harness the wind? And what is the effect on the environment? Read this book to find out all about wind energy.

La perla dentro de su lmeja por Linda Henderson La intimidación ocurre demasiado en el mundo de hoy. El abuelo de Daniel le da algunos consejos atemporales sobre cómo lidiar con los matones. La perla dentro de su almeja Esta historia de Daniel y su abuelo calentará los corazones tanto de usted como de sus hijos o nietos. Escucha en su conversación como Daniel se abre a su abuelo en una caminata que realizan juntos después de la escuela. Daniel comparte cómo está siendo intimidado por dos de sus compañeros de clase porque es bajito. Su abuelo le dice algunos consejos muy sabios y...