¿Comen hierba los tigres?

A nonsensical and factual look at animals. Use of eye-catching illustrations and clear text answers children's most frequently asked questions about animals.

Did you know that nature is the world's largest science and engineering lab? Learn how designers and engineers use biomimicry to create or improve products. This title supports NGSS for Engineering Design.

Explains the basic science of flight, the problems of getting vehicles into the air, different types of engines, and aircraft design, and includes instructions for making aircraft models.

¿Sabías que la forma tubular del submarino lo ayuda a moverse más rápido por el agua? Los tanques de lastre lo ayudan a hundirse o flotar. Aprende más datos fascinantes en Los submarinos, uno de los libros de Máquinas militares poderosas.