Mi enciclopedia de la naturaleza

The most secret and elite of special forces groups, U.S. Army Delta Force fights terrorism, hunts down war criminals, and performs dangerous surveillance missions.

Humans and animals can also make a great team working together. See how horses and the officers who ride them work together to keep our streets safe.

Mars is perhaps the most thrilling planet these days. With rovers exploring its surface and manned missions in the works, people are wondering if Mars is our next home! In this highinterest book, readers will learn more about Earth's neighbor, including what its climate and surface are like, why it's called the Red Planet, and about the recent discovery of water on its surface. They'll learn all this while solving "Your Mission" math problems that complement and support the text. This motivating volume is an engaging way to explore key aspects of science and math curricula.

Viajaremos, continente por continente, para conocer los animales más fascinantes que habitan nuestro planeta. Descubriremos las criaturas más feroces de la sabana africana, los bichos más exóticos de las selvas de América, las fieras que habitan el continente asiático, los animales más misteriosos y sorprendentes del fondo marino y... ¡muchísimo más! Mi primer atlas de animales es un libro indispensable para consultar en casa o en la escuela y convertirte en un especialista de la fauna de nuestro planeta. ¡Un atlas bestial!