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Navigation instruments have changed over time. Lodestones, sunstones, and sextants helped early navigators find their way. Modern technology makes navigation more precise than it has ever been. But the roots of navigation still remain. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational 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 of the engineering design process and is perfect for makerspace activities. It ...

Offers complete coverage of Chile, including sections on history, geography, wildlife, infrastructure and government, and culture.

Un libro para colorear formas, colores y números para niños de 2 a 4 años: este libro es una excelente introducción a las formas, colores y números para niños en edad preescolar. El precio de este libro incluye el permiso para descargar otros 10 libros de la serie en formato PDF de forma gratuita. Los detalles sobre a) cómo se pueden descargar los PDF y b) dónde se puede encontrar la contraseña, están dentro del libro. Los siguientes libros descargables en PDF ayudarán a su hijo a empezar su educación con muy buen pie. Descargas de PDF Restas nivel 1 por James Manning Restas nivel ...

Readers will set their eyes to the night sky in this fascinating book about astronomers. This volume is a perfect combination between STEM and career guidance as it introduces readers to the different ways astronomers use science, technology, engineering, and math in their work every day. Readers will love learning about celestial bodies and space phenomena, as well as the different processes and equipment astronomers use to observe, collect, and analyze data. This book also covers the steps a person can take to become an astronomer. The curriculum-based information in this book is conveyed...