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Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

Children will love watching the universe unfold before their eyes in this four-meter foldout llustration of the solar system. They'll be able to discover a unique illustrated journey through space.

El romancero ha sido durante siglos vehículo de transmisión viva y directa de multitud de temas populares. Grandes poetas han utilizado el romance entre sus formas de expresión, por su musicalidad y su implantación popular.

No town or city could be built if the builders didn't understand the concepts of perimeter and area. Students will use perimeter and area to build towns and cities and design homes and parks in the book, Pueblos y ciudades (Towns and Cities). At home or in the classroom, this nonfiction book will engage students in learning measurement and geometry, and how to grid patterns, through fun practice problems and diagrams.