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...

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...

How do you truly engage students in learning history? When students make personal connections to the subject, they’re much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into historical events. Students will learn about California’s gold rush by examining maps, letters, images, and art from that time. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. Packed with information and primary...

Un libro claro, riguroso y estructurado, adaptado a los contenidos curriculares de Biología y Geología, acompañado de un elevado número de actividades teóricas, prácticas, competenciales e interactivas. Son piezas clave del libro: el enfoque TIC, con vínculos a animaciones y a actividades interactivas y el planteamiento encaminado al desarrollo de las competencias básicas.Incluye como anexos un diccionario científico y un atlas anatómico, de gran utilidad tanto en el aula como para el uso autónomo de los alumnos.

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.

¿Puede un día soleado convertirse en una noche estrellada? ¡Descúbrelo! Las cosas no siempre son lo que parecen...

What is the most effective way to study for a test? Whether it's gearing up for the SATs or cramming for a history exam at school, this book is here to help. Packed with results-driven recommendations on everything from time management to reducing stress, it provides students with the tools they need to develop more efficient study habits and boost their grades. Indispensable sidebars are included throughout, as are suggestions for how to apply essential test-prep skills in the workplace and beyond.