La Campana de la Libertad (The Liberty Bell)

Do you know why there are thirteen stripes and fifty stars on the American flag? Or how the American flag inspired Francis Scott Key to write "The Star Spangled Banner?" Find out the answers to these questions and more in The American Flag.

Examines the nature of circles and spheres, including their properties, how they are related, and where they appear in nature.

A flexible suite of resources providing full coverage of the Cambridge IGCSE® Spanish as a First Language syllabus (0502) for first examination in 2015. Written by practising teachers, this workbook helps students further develop the skills acquired through the course. Practical exercises expand and enhance the materials in the coursebook, supporting students through the Cambridge IGCSE® Spanish as a First Language course.

In 1939, a war that would encompass the world began in Europe. Readers will learn about the causes of World War II in this nonfiction Spanish-translated book. The supportive text and fascinating sidebars work in conjunction with the stunning photos and appealing scrapbook layout to provide an enjoyable and enlightening experience that teaches readers about such events and topics as Pearl Harbor, blitzkreig, and concentration and internment camps. Readers will also learn about infamous figures from the war like Adolph Hitler, Sir Winston Churchill, Franklin Roosevelt, and even Rosie the...

En El fascinante mundo de... las arañas verás distintos tipos de construcciones, desde fantásticas telarañas a galerias subterráneas. Descubrirás que algunas especies "vuelan". Aprenderás a reconocer a la viuda negra. Conocerás arañas que viven bajo el agua, en el interior de una burbuja de aire... y muchas más cosas sobre el fascinante mundo de las arañas.