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A Rube Goldberg machine is designed to perform a simple task through a series of elaborate steps. These simple machines are named after Reuben “Rube” Goldberg, an American cartoonist, engineer, and inventor. Learn how these fun machines work and ignite a curiosity about STEAM topics! Created in collaboration with the Smithsonian Institution, this informational text features a hands-on STEAM challenge that is perfect for makerspaces. Make STEAM career connections with career advice from Smithsonian employees working in STEAM fields. Perfect for school reports and projects, this Spanish...

Luna deberá prepararse para la Competencia Intercontinental de Patinaje junto con sus amigos del Jam & Roller. Pero, para cumplir sus sueños, tendrá que resolver problemas escolares, sentimientos complicados y algunos malos entendidos... Luna está más confundida que nunca, dividida entre la escuela y la pista, entre Simón y Matteo. ¿Logrará escuchar a su corazón, pasar el año y triunfar en la competencia?

Una aut�ntica aventura art�stica en la que habr� que encontrar 30 retratos, escondidos en las distintas exposiciones y enmarcarlos con las pegatinas que aparecen en las p�ginas finales. Y por si esto fuera poco, habr� que buscar tambi�n a Wally, a Woof, a Wenda, al mago Barbablanca y a Odlaw, sin olvidarnos de los pasatiempos. Todo ello convierte este libro en el t�tulo m�s divertido de la serie Wally. ENGLISH DESCRIPTION Ever the globe-trotter, Waldo is eager to show you his pictures. But not so fast, you have to find them first! Enter Odlaw's Picture Gallery and admire...

Immigrants help make the United States a special place. Learn all about the history of immigration to the United States as you sharpen your data measurement skills! This Spanish math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, sidebars, and math diagrams extend the learning experience and provide multiple...