La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

Discover How Katydids Got Their Name, That There Are Hundreds Of Kinds With Different Colors And Body Length, What They Eat, And How They Reproduce.

Al Centro de Información y Documentación del Museo de Culturas Populares acudían personas de todas las edades -desde estudiantes de primaria a estudiantes de universidades- a fin de obtener datos acerca de la Navidad, Día de Muertos y Semana Santa, entre mucho más. La información existente no era mucha o incompleta y disgregada, lo que dificultaba la tarea de los estudiantes. Por lo tanto, me di cuenta de la necesidad de elaborar un libro que reuniera los orígenes y la simbología de las principales y más genralizadas fiestas tradicionales de nuestro país. Entonces puse manos a la...

Like the other Sasek classics, these are facsimile editions of his original books. The brilliant, vibrant illustrations have been meticulously preserved, remaining true to his vision more than forty years later and, where applicable, facts have been updated for the twenty-first century, appearing on a "This is . . . Today" page at the back of each book. The stylish, charming illustrations, coupled with Sasek’s witty, playful narrative, make these books a perfect souvenir that will delight both children and their parents, many of whom will remember them from their own childhood. In This is...

Explores The First Settlements That Were Formed In America, Discussing The Explorers That Made Them Possible And The Reasons For The Colonization.