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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 book...

Power, agility, and speed combine to make sports cars fascinating. Learn about the engines, aerodynamics, and the most popular sports cars today. See these sleek machines and decide for yourself which one you would want to test drive. Fully translated Spanish text. Potencia, agilidad y velocidad generan fascinación por los autos deportivos. Aprende sobre poderosos motores y carrocerías aerodinámicas y conoce los modelos de autos deportivos más populares de hoy en día. Lee sobre estas geniales máquinas ¡y decide cuál te gustaría probar!

We have summarized the essential of the following texts: From POLITICAL ESSAYS, "The crisis of the Welfare State and the depletion of the utopian energies", from THEORY AND PRAXIS, "The classsical doctrine of politics and its relationships with philosophy", a small fragment of "Science and technique as ideology and the article "Modernity, an uncomplete project".

La vida de san Francisco de Asís es notablemente diferente de las vidas de los santos al uso. Álvaro Pombo, en simpatía con la antigua tradición franciscana, elige en este libro un estilo correspondiente al gran sobresalto intelectual y afectivo que produce el biografiado. Adopta, por eso, el punto de vista y la voz o voces de los primeros hermanos que acompañaron a Francisco. Con una notable mezcla de atrevimiento, seriedad y simpatía profunda, Álvaro Pombo se convierte, al mismo tiempo, en la voz plural, brillante y humilde de aquella primera comunidad franciscana, una docena mal...