Un polizón en la maleta

Las cobijas no son calientes. ¿Entonces por qué nos dan calor? Descubre la respuesta y otras curiosidades del calor en este libro sobre la temperatura.

Consolidates the Student's Book lessons with targeted practice, unit by unit Additional practice of reading, writing, speaking, listening and use of English skills Extensive grammar and vocabulary practice Complete practice exam in Unit 10 Designed for independent study at home and practice in class Audio for listening lessons available on the Student's App

Filled with tricks and treats, fun and food, Halloween is a day that children look forward to. At one time two separate festivals, the traditions of each gradually blended into the holiday we now celebrate on October 31.

Even before Christmas celebrations began, evergreen trees were used as part of winter festivals and celebrations. Today, many people still bring a real fir tree into their home at Christmastime, or an artificial tree that may come in any color including green, silver, or pink. Written with age-appropriate language and content, this book explains the symbolism behind our use of Christmas trees today and the many famous trees readers may know, including the huge tree at Rockefeller Center in New York City.