Dinosaur Skeletons and Skulls

Guatemala is an important neighbor to the United States. Readers will discover how Guatemala and the US are alike and how they differ as they read about the land and people, animals and celebrations. Hello, neighbor!

El deseo de escribir, nace ante la necesidad humana de compartir ideas, sentimientos, historias, vivencias, etc. Si usted lector, ha pensado en iniciar el oficio de la escritura y tiene dudas al respecto, permítame decir, que esta guía le despejará la mayoría y probablemente le mostrara otras que no había contemplado. Sólo necesita cumplir un sencillo requisito y cito al escritor Robert Penn Warren: “Los verdaderos escritores son aquellos que quieren escribir, necesitan escribir, tienen que escribir”. Ahora nombraremos algunas de las reglas a seguir para la escritura y en esta...

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

Ideal for young children. Sturdy books that will stand up to wear and tear with full-color illustrations and clear, simple text. Each one has a convenient carry-along handle.

Born in Warsaw, Poland, on November 7, 1867, Marie Curie was forbidden to attend the male-only University of Warsaw, so she enrolled at the Sorbonne in Paris to study physics and mathematics. There she met a professor named Pierre Curie, and the two soon married, forming one of the most famous scientific partnerships in history. Together they discovered two elements and won a Nobel Prize in 1903. (Later Marie won another Nobel award for chemistry in 1911.) She died in Savoy, France, on July 4, 1934, a victim of many years of exposure to toxic radiation.