¿qué Hace Un Ingeniero?

Presenta varios experimentos en cronometría. Para estudiantes de primaria (grados 4-6) y de secundaria (grados 7-9).

La novela El ritual de las cabezas perpetuas de Evelio Traba ha sido merecedora del Premio Iberoamericano Verbum de Novela 2016 por "el notable dominio de un relato inverosímil incorporado con destreza a la sangrienta violencia indiscriminada desatada durante los años del Terror -en los que toda perversión imaginada pudo hacerse realidad; y el retorcimiento de la realidad pudo albergar el delirio de un sueño imposible-, en el curso de la Revolución Francesa, así como por su acierto en el despliegue de un sorprendente continuo diálogo entre la Razón y el Enigma. El jurado reconoce,...

What are the busy little Christmas mice up to on Christmas Eve? Find out in this delightful board book filled with different touchy feely textures and sparkling surprises.

"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 the film Jurassic Park. Take a trip through dinosaur time to meet these deadly dinosaurs face-to-face: The Variraptor had pointy teeth with grooves like steak knives to saw through meat! The Draeomaeosaurus was the first raptor ever discovered. It had a very large brain! The Microraptor was ...