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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...

La hibernación es un ciclo que algunos animales hacen cada año. La mayoría de la gente sabe que los osos hibernan. ¿Pero por qué hibernan? ¿Y qué otros animales hibernan? Hibernation is a cycle that some animals go through every year. Most people know that bears hibernate. But why do they hibernate? And what other animals hibernate?

Connie es una joven brillante aspirante a profesora de Historia en la dura y competitiva Universidad de Harvard. El verano que debe decidir el tema de su tesis doctoral su madre le pide que vacíe la deshabitada casa de su abuela, cerca de Salem, con el propósito de venderla. Allí, oculta dentro de una Biblia, Connie encuentra una llave que esconde un papel con una extraña inscripción. La investigación que llevará a cabo para desvelar su significado la obligará a remontarse hasta la caza de brujas de Salem, en 1692, y la conducirá a un misterioso libro.Connie decide entonces escribir...

It is the third Monday in January and school is closed. But do you know why? It's Martin Luther King Jr. Day. Turn the pages of this book to find out what dream Dr. King shared with the world, who Mohandas Gandhi was, how one brave woman helped Martin Luther King Jr. change history. Each book in the Holiday Histories series describes one of America's holidays or special days. Explore the history of each day and learn the real reason why it is important. Discover what special meaning each day might have for you.