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Los trenes fueron una de las primeras formas mecanizadas en que los humanos solían viajar largas distancias. Los lectores verán cómo cambiaron la forma del país al transportar humanos y suministros de costa a costa. -
¡Imagínese viajar a la mitad de la velocidad de un avión sin abandonar el suelo! Los estudiantes descubrirán la tecnología que hace posible tales velocidades, desde pistas especiales y precauciones de seguridad hasta trenes diseñados aerodinámicamente. ¿Cuáles son los límites de la velocidad de los trenes? ¿Qué impone esos límites? Los estudiantes también leerán sobre el futuro del viaje en tren de pasajeros, desde trenes voladores hasta trenes que usan imanes enormes para levitar pulgadas o centímetros de la vía. ¡Algunos trenes alcanzan con seguridad velocidades de más de 200 mph! -
The mountains are home to some of the worlds most sure-footed animals. Mountain goats can grip the tiniest piece of rock and leap among the jagged peaks with ease. In Mountain Goats/Cabras monteses, learn how these amazing creatures surviveand thriveat the top of the world. This special English-Spanish bilingual edition enables children to work on their second-language skills as they develop strengths in their primary language -
Presents information about baby kangaroos, how they behave, and where they live. -
Journey high into the mountains to meet the worlds largest flying land bird. Soar among the clouds with this graceful bird as it searches for food. In Condors/Cndores, learn how this incredible animal has been brought back from the brink of extinction. This special English-Spanish bilingual edition enables children to work on their second-language skills as they develop strengths in their primary language. -
Amazing mountain animals fill the pages of this exciting bilingual series. Redesigned with new features, each book invites readers to discover the world of creatures that make their home in high places. Young learners will read about each animals unique physical characteristics, behavior, and adaptations to their environment. Through fascinating facts and brilliant photographs, these books paint a vibrant picture of the incredible array of animal life in the mountains. -
Introduces ambulances, the people who work in them, and the work that they do helping sick and injured people.
