Nuestra Declaración de Derechos: Compartir y reutilizar (Our Bill of Rights: Sharing and Reusing)

"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 pterosaurs face-to-face: The Quetzalcoatlus had wings that spanned the length of a school bus! The Dsungaripterus had a bony crest on its head! The Eudimorphodon had a diamond-shaped flap at the end of its long tail! Plus you'll ...

Antes de que yo naciera, el ocano Atlntico era una inmensa regin plagada de terribles monstruos. Lo llamaban "el Mar Tenebroso," y nadie se adentraba en l si no era por accidente.Cuando yo nac, ya se haba comenzado a explorar algunas islas como las Azores y las Canarias, aunque los barcos todava preferan navegar bordeando la costa para no perder tierra de vista.Por el contrario, yo me intern en el mar ms lejos de tierra firme de lo que ningn ser humano haba navegado antes. Al principio, se burlaban de m. Despus de mi viaje por el Atlntico, todos siguieron mi ejemplo.

A Rube Goldberg machine is designed to perform a simple task through a series of elaborate steps. These simple machines are named after Reuben “Rube” Goldberg, an American cartoonist, engineer, and inventor. Learn how these fun machines work and ignite a curiosity about STEAM topics! Created in collaboration with the Smithsonian Institution, this informational text features a hands-on STEAM challenge that is perfect for makerspaces. Make STEAM career connections with career advice from Smithsonian employees working in STEAM fields. Perfect for school reports and projects, this Spanish...

¿Por qué hay que masticar con la boca cerrada?. Descubre cómo los buenos modales convierten las horas de las comidas en momentos agradables para todos.