Jóvenes rebeldes. 25 adolescentes que están cambiando el mundo

Presents the life story of the Mexican-American labor leader who helped achieve justice for migrant farm workers by creating a union to protect their rights.

Encuentra las respuestas a 70 preguntas sobre el espacio. �En qu� se diferencian los planetas de las estrellas? �Por qu� no sentimos que la Tierra se mueve? �Qu� origina las estaciones en la Tierra? �Hay vida en otras partes del universo? Puedes convertirte en un experto del espacio y sorprender a tu familia y a tus amigos con datos fascinantes. Cientos de datos e ilustraciones impresionantes que describen la belleza de nuestro universo con detalles espectaculares.

Computer science is all around us, at school, at home, and in the community. Anyone can learn computer science, even at the elementary school level. This book delves into essential computer science concepts using age-appropriate language and colorful images. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience. The instructional guide on the inside front and back covers provides: Vocabulary, Background knowledge, Text-dependent questions, Whole class activities, and Independent activities.

"Dino" Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children's books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these fast dinosaurs face-to-face: The Gallimimus could outrun a sandstorm! The Struthiomimus may have been the fastest dinosaur. It could run up to 60 miles per hour! The Liaraptor ran until it took off into the air! These may have...