El ciclo del nitrógeno (The Nitrogen Cycle)

Este libro consta de diez unidades didácticas, cada una de las cuales se estructura de la siguiente manera: - Doble página de apertura - Desarrollo de contenidos - Dossier - Síntesis - Actividades complementarias. El contenido está especialmente adaptado para la Comunidad Autónoma de Andalucía.

An imaginative craft book with quick and easy finger painting ideas comes complete with four nontoxic two-ounce paint pots, a child-size art smock, and 9" x 12" paper.

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...

Mrs. Frizzle's class investigates the disappearance of the salmon from the sea and in the process learn about migration.