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

Veteran’s Day is a day set aside to thank the men and women who risk their lives protecting America. Each year on November 11, we celebrate what they have done for our country. Learn more about the history of this important holiday, such as why it is on November 11 and what Americans do to celebrate.

What’s the difference between a seal and a sea lion? These “second cousins” of the sea look similar, but there are many ways to tell these creatures apart. From ear shape to the noises they make to communicate, seals and sea lions are amazing creatures with both shared features and many truly unique attributes. They both share an ocean habitat, but when readers take a closer look, it’s easy to discover how they each fight off predators, mate, and raise their young in different ways. Captivating full-color photographs help to bring these marvelous mammals to vivid life.

Además de la violencia ejercida sobre los opositores y la instauración de un modelo que ponía en el centro de la vida social al mercado, la dictadura de Pinochet se empeñó en forjar una juventud que permitiera proyectar el “nuevo orden” por medio de organizaciones civiles que dieran pie, a medida que estos jóvenes crecieran, a partidos políticos, organizaciones empresariales, think tanks y universidades. Fue la primera vez en la historia de Chile que se instituyeron “juventudes de Estado”, a la manera en que lo hicieran los gobiernos de Mussolini en Italia, Salazar en Portugal...

Follow a day in the life of two children from different cities! This entertaining title has been translated into Spanish and encourages young readers to practice time measurement skills and early STEM themes, like reading analog and digital clocks. Familiar images and fun practice problems will have young readers thinking about how they can measure time throughout a day in their own lives! This 6-Pack includes six copies of this title and a lesson plan.