Barcelona XXI siglos

What keeps objects from floating out of your hand? What if your feet drifted away from the ground? What stops everything from floating into space? Gravity. As in his previous books, Redwoods, Coral Reefs, and Island, Jason Chin has taken a complex subject and made it brilliantly accessible to young readers in this unusual, innovative, and very beautiful book.

On a clear night, you should be able to see the stars. But we cannot always see them. Light pollution prevents us from seeing the stars and causes other problems as well. Learn about light pollution with this STEAM book that will ignite a curiosity about STEAM topics through real-world examples. Created in collaboration with the Smithsonian Institution, it features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from actual Smithsonian employees working in...

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....

¿Qué es una forma en música? ¿Es indispensable que una obra musical tenga una forma y una estructura? ¿Qué son el aire cortesano, el anthem, el aria, la balada, el ballet, la canción polifónca, el coro o el concierto? Esta guía cubre la ausencia que ha habido durante varias décadas del siglo XX de una síntesis de las formas de la música. Permite adquirir un conocimiento básico sobre una forma y su evolución, sin necesidad de dedicarse a la compilación de obras muy dispares, historias de la música, tratados sobre composición, etc. Asimismo, el autor analiza de forma...