Exploremos los minerales de la Tierra (Exploring Earth's Minerals)

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Este libro es una divertida herramienta para entender mejor los pasajes del Evangelio, como las Bienaventuranzas, y comprobar que son muy actuales.

Describes the impact of the Ford Model T automobile and the assembly line that built it on the automotive industry and American society, and recounts the life and career of their inventor, Henry Ford.

La importancia de obedecer las reglas queda graficada en cualquiera de los miles de ejemplos de niños que, por desobedecerlas, sufrieron un grave accidente que les ha significado la amputación de una extremidad u órgano interno vital, sin el cual ya no pueden seguir haciendo su vida en forma normal. Todo cuerpo de normas, busca proteger la integridad física y sicológica de quienes nos regimos por ellas y, en la sociedad actual, todos debemos obedecer algunas órdenes y reglas para mejorar la convivencia. Este libro busca solucionar todas las dudas que se tengan sobre cómo acatar las...

Surveys the life of Nat Love, African American cowboy, renowned for his riding, roping, and sharpshooting.