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.

Blobfish, pangolin, and flower mantis are just a few of the names of the bizarre bugs and animals that readers will learn about in this fascinating, Spanish-translated nonfiction title. Through vibrant images and photos, informational text, a glossary of terms, and an index, readers will learn some of the strange ways that arthropods, invertebrates, and mammals have adapted over time to camouflage themselves and develop interesting ways to keep predators away.

It is the third Monday in January and school is closed. But do you know why? It's Martin Luther King Jr. Day. Turn the pages of this book to find out what dream Dr. King shared with the world, who Mohandas Gandhi was, how one brave woman helped Martin Luther King Jr. change history. Each book in the Holiday Histories series describes one of America's holidays or special days. Explore the history of each day and learn the real reason why it is important. Discover what special meaning each day might have for you.

Regina no sabe que un simple contrato cambiará su vida para siempre, y Emma no sabe que ese contrato le traerá aquello con lo que siempre ha soñado

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.