La fiebre del oro

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...

Take a trip to the British Museum as you explore its fascinating objects and geometric shapes! This famous London museum was built for exploration - and for learning geometry. Learn about its history and artifacts as you build your geometry 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,...

Students will develop their math skills while engaged in reading about the importance of honeybees. This nonfiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, intriguing sidebars, practice problems, and math diagrams make learning place value relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading concepts. An in-depth problem-solving section provides additional learning and practice opportunities while challenging...

Learn how to help others in your community. This exciting Spanish nonfiction book describes the many ways that volunteers make a difference, from cleaning up parks to helping in food banks. Perfect for young readers, the book includes a short fiction stor

Al pequeño Pombo le espera una buena sorpresa, ¡su mamá va a tener otro osezno! Está muy preocupado: ¿seguirá su mamá queriendo a su pequeñín cuando haya un nuevo miembro en la familia? Una historia tierna y cercana para los pequeños de la casa, que disfr

El amor y la amistad también se construyen dialogando. Algunos piensan que la amistad puede nacer y desaparecer en un solo instante, otros opinan que una amistad verdadera dura toda la vida... No hay una única respuesta para las grandes preguntas de la vida. No existe sólo una forma de pensar. Cada quien debe construir, buscar, construir la suya propia. Doce ideas sobre el amor y la amistad se confrontan en este libro.

Raíces es un libro de poemas, aforismos y prosas que aborda algunos de los grandes temas de la historia poética: amor, sueños, infancia, la mirada y la lectura. Este libro es el resultado del trabajo y el compromiso de Asier Aldea Esnaola por retratar literariamente sus pasiones e inquietudes juveniles con un estilo inspirado por los poetas de antaño. “El buen libro se lee susurrándoselo al escritor. No importa si ya ha muerto, si vive, si alguna vez coincidieron, o si no; es indiferente. El lector se lo imagina a su lado, muy pegado, escuchándole atento, curioso, tan real como el...

In this Spanish title, learn causes of extinction and what problems extinction causes for animals, wildlife, and humans alike.