Andemo in Mèrica

"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...

A su paso por Saturno, las sondas Voyager tomaron, en los años 80 del siglo pasado, numerosas fotografías de sus anillos. Aquellas imágenes dieron pie, poco más tarde, a un extravagante experimento. Tras reproducir con suma precisión el diseño de los anillos en forma de surcos sobre un disco de vinilo, la audición desveló por sorpresa, en medio de una sucesión de frecuencias sin sentido, un fragmento de la Ofrenda musical, una de las composiciones más enigmáticas y esotéricas de Johann Sebastian Bach. Este sorprendente resultado podría interpretarse como un atisbo, singular y...

Teach students the importance of the United States Constitution. In this nonfiction Spanish-translated book, readers will learn that the Constitution tells our leaders how to run the country, and it ensures that Americans have rights. Students will build their literacy skills and social studies content knowledge with this important book.

Surveys the life of Nathan Hale, a Revolutionary War hero whose service to George Washington as a spy cost him his life.