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When the Louisiana Territory was added to the United States in 1803, it about doubled the size of the young nation. It took years to clarify its boundaries and explore every square mile. How this momentous purchase came to be and its implications on the future of the United States are explained in detail in this book. Uncomplicated maps and simple language help developing readers and those in need of review to understand the many changes in this land that started with its purchase in 1803.

¡No te pierdas este libro! Un recorrido por la historia de los Juegos Olímpicos, desde sus inicios hasta hoy, en el que encontrarás información sobre disciplinas, participantes, medallas y situaciones curiosas. • Los Juegos de Londres 2012 fueron los primeros en ser transmitidos en 3D. • Río de Janeiro 2016 representa el primer evento olímpico en Sudamérica. México, en 1968, fue la primera ciudad latinoamericana en concretarlo. • Para llevar la antorcha olímpica solo es necesario ser mayor de catorce años y poder recorrer cuatrocientos metros. • El fútbol americano fue...

Light can travel faster than anything else in the universe. But what exactly is light, and where does it come from? This nonfiction Spanish book teaches students all about light, and introduces them to important scientific concepts and vocabulary terms like infrared, ultraviolet, photos, and visible spectrum. The intriguing images, detailed diagrams, and stimulating sidebars will keep students connected to the text. The fun lab activity provides a real-world learning experience that supports STEM instruction. Aligned to state and national standards, the leveled text supports differentiation....

These diaries feature the loves, friendships, and family lives of Pascualina and Aldonza, a.k.a Artilugia, providing positive messages and advice for adolescents. Each includes bookmarks, stickers, and plastic pocket pages for storing special items. This diary of Pascualina's younger sister, Aldonza, chronicles her attempt to reconnect with a lost love through the adoption of a gypsy alter ego, Artilugia. Estas agendas revelan los amores, amistades y la vida familiar de Pascualina y su hermanita Aldonza, también conocido como Artilugia, mientras proporcionan mensajes positivos y consejos...