Experimentos sencillos con sólidos y líquidos

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.

Written in a vivid and accessible style, this history book addressed to young readers focuses on one of the most relevant periods in Mexican history: that of the country's strife for independence from Spain. In addition to its descriptive historical account, the book includes charts, illustrations, and a timeline of main events from 1808 through 1821 that help make the information even more entertaining and clear for children.

Descubre los mejores secretos y trucos para tu videojuego favorito ademàs de conocer algo de su historia. Incluye Diccionario de términos más utilizados en el juego

Con un sentido de humor este libro ilustrado para niños y jóvenes cuenta la historia sobre la vida de los soldados romanos en el tiempo del emperador Adriano.