Lewis y Clark y la compra de la Luisiana (Lewis and Clark and Exploring the Louisiana Purchase)

Learning about a career as a molecular biologist is the perfect introduction to the practical applications of STEM. This career-focused book aims a microscope at molecular biology, helping readers understand DNA, genes, and the systems within a cell. Readers will also learn about advances in the field and how to work towards a job as a molecular biologist. Accessible text is paired with vivid visuals to keep readers’ interest as they learn more about this STEM topic. A graphic organizer and fun fact boxes present additional information to ensure a dynamic learning experience.

Cuaderno de actividades para afianzar los conocimientos adquiridos. Consta de quince unidades, que se corresponden con las del libro del alumno. Incluye un solucionario al final del cuaderno.

What did people use to buy things before money was invented? Where is money made? Find out in this inviting book that informs readers about coins, paper money, the Federal Reserve, exchange rates, and checking accounts. Featuring a timeline of moneys history, detailed photos, stimulating facts, clear, informational text, and a glossary that will assist in improving vocabulary, this Spanish-translated nonfiction title will keep readers engaged from cover to cover.

Learn about the rich history of Mission San Francisco de Asís: how it started, the people who ran it, the indigenous population, and its legacy today.