Alexander Hamilton

Describes what early planes and air travel were like, how planes were developed to travel faster, and presents some pioneers of aviation.

¿Sabías que la gente puede excavar y utilizar el calor de la Tierra para producir energía? Esta energía geotérmica puede alimentar tu computadora y calentar o enfriar tu hogar. Pero, ¿cómo se obtiene exactamente? ¿Y cuál es el impacto sobre el medioambiente? Lee este libro para aprender todo sobre la energía geotérmica. Did you know people can dig underground and use Earth's heat to make energy? This geothermal energy can power your computer and heat or cool your home. How exactly do we get it, though? And what is the impact on our environment? Read this book to find out all about...

Tome un viaje a México y mira por que este país es especial. Este texto ayuda a los lectores a aprender sobre la comida, los animales y la cultura de México. Las fotografías de color y las preguntas de pensamiento crítico completan esta divertida mirada a las personas y lugares de México. Take a trip to Mexico and find out what makes this country special. Now in Spanish, this carefully leveled text helps readers learn about the food, animals, and culture of Mexico. Full-color photographs and age-appropriate critical thinking questions round out this fun look at the people and places of...

Provides an overview of the design, uses, weapons, and equipment of U.S. Air Force bombers. Written in English and Spanish.