Tu mundo: Chicle bomba: Suma y resta (Your World: Bubblegum: Addition and Subtraction)

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

"In this heartwarming book, brother and sister, Mark and Sara, discover the story behind the poinsettia plant--the Christmas flower (las flores de la Nochebuena)--as their family experiences the best Christmas ever."--Cover back.

When a bird flies by a window or a car zooms by on the highway, we often wonder how fast the two objects traveled. This book explains the concept of speed to readers while showing them accessible ways to measure it for themselves. Learning the amount of distance traveled, and how quickly that distance was covered, is a great way to implement a variety of STEM topics while practicing this essential mathematical skill.

A través del Islam es una obra fundamental de la literatura de viajes, así como un clásico de las letras árabes. Es un relato en primera persona de las aventuras y desventuras, placeres y sinsabores, del tangerino Ibn en su dilatadísimo viaje desde Marruecos hasta China en pleno siglo xiv. Al regresar a su Marruecos natal, tras un periplo de veintitrés años, Ibn compiló sus recuerdos de los países islámicos visitados con la ayuda de un granadino, para satisfacer el encargo del sultán merení de Fez. Con la finalidad de proporcionar al sultán informaciones difíciles de adquirir en ...