Mujeres en las ciencias (Women in Science)

As a land that’s constantly in flux, Earth sometimes reveals clues about the plants, animals, and other organisms that lived long ago. Fossils teach us much about what life was like millions of years ago, answering the questions of how Earth changed and maybe even why it changed. This essential Earth science topic is thoroughly explained through manageable text, fact boxes, informational charts and diagrams, and a glossary and index. Readers will become young Earth detectives by the time they’re through with this text!

Having a job and earning money are a part of everyday life for most people, especially adults. The concept seems fairly straightforward: one works to earn. This volume discerns the difference between a job and a career, as well as how a job can develop into a career. Readers will learn why a community's economy needs jobs, how paying someone to do a job helps the person who is paying them, and even about job loss and its consequences. The text also explains different jobs and their effects on the economy, such as those of professional, production, arts, and government and military jobs.

Why did the Civil War begin? Which states were part of the Union and which were part of the Confederacy? Readers will learn the answers to these questions and more as they move through this fascinating nonfiction Spanish-translated book. The easy-to-read text, engaging facts, and vivid images and illustrations help highlight some of the aspects that led up to the Civil War including the slavery, the Underground Railroad, abolitionists, the Fugitive Slave Act, the Dred Scott Decision, and the Lincoln-Douglas debates. The accessible table of contents works in conjunction with the supportive...

A simple biography of the man who worked to win fairer treatment of the migrant farm workers in California in the 1960s and to establish the United Farm Workers union.

“Un relato conmovedor que le da un rostro humano a los indocumentados, tan bello como marcado de cicatrices. Imprescindible”.—Kirkus Reviews, reseña destacada. Basada en el libro homónimo para adultos, La Travesía de Enrique de Sonia Nazario está disponible en su versión adaptada para lectores jóvenes traducida al español por Ana Ras. Esta es la verdadera historia de Enrique, un adolescente hondureño que emprende un viaje arduo y peligroso en busca de su madre, quien se vio forzada a dejarlo de niño para marcharse a los Estados Unidos a trabajar. La historia de Enrique refleja...