El ciclo del nitrógeno (The Nitrogen Cycle)

Simple text and photographs introduce the concept of "skip counting," or counting by groups of a certain number, and present items for practice.

Beginning readers will be captivated by the creatures they meet in this Spanish translation of Prehistoric Creatures. The simple text describes ancient animals that swam the seas, soared through the skies, and roamed the Earth long before people existed. Each book describes a group of dinosaurs that shared one or two fascinating features. Dazzling illustrations help bring these amazing creatures to life!

“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 horned dinosaurs face-to-face: Torosaurus had the biggest skull of any animal ever! Pentaceratops had five sharp horns on its head! Styracosaurus was as big as an ice cream truck! Plus, you'll get to know Centrosaurus,...

¿Cómo te va a ayudar esta guía? ERRORES Y HORRORES MAYÚSCULOS es una guía práctica y visual para no cometer las faltas de ortografía más frecuentes y resolver dudas. Y lo conseguirás sin tener que aprender aburridas teorías o complicadas normas. ¿Cómo? Con ejemplos prácticos, rimas pegadizas y trucos infalibles. ¿Qué encontrarás? - Ejemplos claros que se entienden sin necesidad de memorizar reglas. - Trucos fáciles para resolver tus dudas en los casos expuestos, donde se muestran los errores más habituales. - Rimas sencillas de recordar para evitar faltas de ortografía. No...