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

An eighteen-year-old pinball addict and a smart-mouthed girl who don't quite fit in with anyone else develop a special relationship.

Explores the different types of land on Earth including deserts, seashores, plains and explains why they change.

Maps of the different regions of the world show their geographic, cultural, and economic features. Includes text describing the individual coutries.

Learn about the Victorian era while building your knowledge of equivalent fractions! Students will learn fractions while engaged in reading about the innovations of the Victorian era. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts make learning math easy, practical, and fun. The Explore Math sidebars and Math...