Apuntes de matemáticas

California became a territory in the United States when the Treaty of Guadalupe Hidalgo was signed in 1848. That treaty ended the Mexican War. Several days before its signing, gold was discovered at Sutter’s Mill in what is now Sacramento. The non-Native population of the territory was less than one thousand in 1848, but the gold rush increased that number to one hundred thousand by the end of 1849. The gold rush not only made many people wealthy, it brought ecologic devastation while speeding up California’s statehood. This book richly explores this interesting history.

No hay duda alguna sobre el hecho de que el divorcio puede ser difícil, y uno de los aspectos más complejos de sobrellevar es la reconstrucción de tu vida. Todo eso fue lo que viví hace unos años. Luego de sufrir por mucho tiempo, y después de salir de un divorcio bastante complicado, pensé que las cosas se volverían a encarrilar. Pero resultó todo lo contrario. La triste realidad era que me sentía incapaz de seguir adelante con mi vida. No sabía por dónde empezar, aunque lo único que sí sabía era que tenía que hacer algo, y con urgencia. Fue entonces cuando empecé a leer...

History is full of unsolved crimes, mysterious disappearances, and strange sightings. Readers will discover some of the most well-known mysteries in history--including Amelia Earhart, Big Foot, and the Salem Witch Trials--in this fascinating, Spanish-translated nonfiction book. Featuring detailed images, intriguing facts, and informational text in conjunction with a glossary of terms and an index, readers will be enthralled from beginning to end! This 6-Pack includes six copies of this title and a lesson plan.

As a young boy, Jos Marti he traveled to the countryside of Cuba and fell in love with the natural beauty of the land. During this trip he also witnessed the cruelties of slavery on sugar plantations. From that moment, Mart began to fight for the abolishment of slavery and for Cuban independence from Spain through his writing. By age seventeen, he was declared an enemy of Spain and was forced to leave his beloved island. Marti traveled the world and eventually settled in New York City. But the longer he stayed away from his homeland, the sicker and weaker he became. On doctor's orders he...