El Pacto Del Mayflower /

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Un libro que presenta, de forma amena pero muy rigurosa, a los pensadores, científicos, artistas e inventores que cambiaron la historia del mundo. Los genios nacen, se hacen y ahora también... ¡se leen! Veinticinco cuentos, desde la Antigüedad hasta la actualidad, que presentan a los pensadores, científicos, artistas e inventores más importantes del mundo y los descubrimientos que cambiaron el curso de nuestra historia. Una visión global de la historia del ser humano y de los principales descubrimientos científicos y movimientos culturales. ¿Qué descubrió Arquímedes mientras se...

A biography telling the life story of Booker T. Washington, along with his accomplishments toward promoting the education of African Americans. Written in graphic-novel format.

This New York Times bestseller, now available in Spanish, recounts the true story from Wilson Kimeli Naiyomah of the touching gift bestowed on the United States by a tribe of Maasai Warriors in the wake of the September 11 attacks. In June of 2002, a mere nine months since the September 11 attacks, a very unusual ceremony begins in a far-flung village in western Kenya. An American diplomat is surrounded by hundreds of Maasai people. A gift is about to be bestowed upon the American men, women, and children, and he is there to accept it. The gift is as unexpected as it is extraordinary. Hearts...

Take a trip to New Orleans with a young girl and her family as they attend one of the world's biggest parties: Mardi Gras! Learn all about the history of this fascinating festival as you practice subtraction strategies. This fiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, engaging sidebars, practice problems, and math diagrams make learning subtraction strategies relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading...