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

Visiting Tulum National Park is like going back in time. The Maya lived there long ago. Learn addition as you count the things they left behind. This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning addition easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section provides...

Disfrute de poemas, en verso libre, que hablan del amor, la pasión, la amistad, la soledad, los sueños y otras sorpresas de la vida. ¡Apoya a los escritores independientes, comentando y calificando sus obras! ¡Gracias!

Presents the life story of the Mexican-American labor leader who helped achieve justice for migrant farm workers by creating a union to protect their rights.

Learn how zookeepers at the National Zoo keep the animals healthy and happy. This Spanish book features a hands-on STEAM challenge and uses real-world examples to give insight into how the engineering design process is used to solve problems.