César

Born in 1927 in Yuma, Arizona, César Chavez lived the hard-scrabble life of a migrant worker during the Depression. Although his mother wanted him to get an education, César left school after eighth grade to work. He grew to be a charismatic leader and founded the National Farm Workers Association, an organization that fought for basic rights for farm workers. In powerful poems and dramatic stylized illustrations, Carmen T. Bernier-Grand and David Díaz pay tribute to Chavez's legacy helping migrant workers improve their lives by doing things by themselves for themselves.

Nuevos récords alucinantes cobran vida. Un excelente y regalo para divertirse aprender. Vuelve el libro de los récords con nuevas y alucinantes hazañas. Totalmente actualizado, con nuevo diseño de cubierta ¡y con más de 1.000 nuevas fotos! Acércate peligrosamente al mayor dinosaurio carnívoro de todos los tiempos. Diviértete con el balón de fútbol más grande del mundo. Conoce al robot andante más grande. Descubre las criaturas más venenosas de la Tierra. Y además… ¡Descárgate gratis la nueva aplicación de realidad aumentada para ver cómo los récords emergen del libro en...

Children will love watching the universe unfold before their eyes in this four-meter foldout llustration of the solar system. They'll be able to discover a unique illustrated journey through space.

Los héroes de ficción que viajan en el tiempo pueden cambiar el pasado o el futuro. ¿Podrán hacerlo los seres humanos en el futuro? A medida que los científicos aprenden más sobre las personas y el universo, comienzan a darse cuenta de que algunas formas de viaje en el tiempo podrían ser posibles. Fictional heroes who time travel can change the past or the future. Will humans be able to in the future? As scientists learn more about people and the universe, they're starting to realize that some forms of time travel might be possible. Now in Spanish!

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.