Desafíos matemáticos

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.

This nonfiction book explores the history, culture, customs, and beliefs of California's American Indian tribes including the Chumash, Tongva, Hupa, Yokuts, Quechan, and Coso tribes. Detailed primary source images in conjunction with Spanish text provide 3rd grade students with an inviting reading and learning experience as they build their social studies knowledge. This book includes basic informational text features including a glossary, an index, table of contents, and reader's guide. Students will be intrigued by Native American history with this fascinating nonfiction Spanish book.

"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 feathered dinosaurs face to face: The Caudipteryx had feathered arms and a tail that looked like a pom-pom! The Sinovenator may have used colorful feathers to attract a mate! The Microraptor may have used its feathers to glide...

La Cátedra Alfonso Reyes del Tecnológico de Monterrey presenta este libro como un espacio de vanguardia orientado a la promoción y la reflexión sobre las Humanidades. Considera fundamental abordar el tema de la vigencia y los alcances del Humanismo renacentista y su relación con las llamadas Nuevas humanidades y los Nuevos humanismos. Así inicia este libro, celebra el XXII aniversario de la Cátedra con una mesa sobre el Humanismo en Reyes, en la que se reúnen a tres reconocidos reyistas: Liliana Weinberg, Coral Aguirre y Javier Garciadiego.

SOFIA REYES: Explore fascinating facts about up-and-coming Mexican musician Sofía Reyes! She is on her way to becoming one of the top Latin Pop Stars in the world, but has she always loved music? Let's get to know Sofía Reyes! STARS OF LATIN POP: This photo-filled biography series follows the journeys, careers, and passions of some of the biggest names in Latin Pop. Discover the accomplishments that make them some of the top musicians today! INCLUDES: This 32-page high-interest book for striving readers in grades 4–9 features text in both English and Spanish. Glossary words are defined on ...