En el trabajo: Contratistas: Perímetro y área (On the Job: Contractors: Perimeter and Area)

¿Qué se necesitará para enviar personas a Marte en los próximos 25 años? Los estudiantes aprenderán que la resolución de problemas es un componente esencial de la misión planificada de la NASA a Marte. Este libro en español combina habilidades matemáticas y alfabetización, y usa ejemplos prácticos del mundo real de resolución de problemas para enseñar matemáticas, artes del lenguaje y contenido STEM. Los estudiantes aprenderán a resolver problemas mientras leen contenido de gran interés. El glosario, el índice y la tabla de contenido mejorarán la comprensión de los...

Explores snakes and describes how they move, hunt, eat and mate. Includes fact boxes with information about snake life.

Many insects hatch from eggs and molt several times as they grow bigger. Others, such as butterflies, undergo a complete metamorphosis. A common science curriculum topic, insect life cycles may be confusing because of these differences. However, this book breaks down these cycles into easy-to-understand steps in both accessible language and colorful diagrams readers can turn to for review again and again. The most important vocabulary needed to talk about insect life cycles is further explained in fact boxes and an extended glossary.

From Mexico to the tip of South America, Latin America features varied scenery, including deserts, grasslands, plains, and mountains. Some are extreme: The Andes is the world's longest mountain range, and the Atacama Desert has not had rain for over 400 years! Latin America's remarkable landscape is an essential factor in its surprisingly different climatic zones. This insightful volume offers a comprehensive tour of the many vibrant countries of this fascinating region, highlighting its most striking areas in vivid photographs. It is also an inviting exploration of geography, natural...

This book tells of several indigenous groups and what we know about their lives and customs based on archaeological discoveries and chronicles of the first Spaniards to encounter them. This title also contributes to the overall knowledge and understanding of these Mexican cultures, which play an important part in the history of the ancient world. Este libro cuenta cómo en Aridoamérica florecieron variados grupos indígenas. Lo que sabemos sobre su vida y sus costumbres es resultado de los descubrimientos arqueológicos y las crónicas de los primeros religiosos y militares españoles que...