Matemáticas en Marte (Math on Mars)

The asteroid belt between Mars and Jupiter is an intriguing area of our solar system. Scientists have counted over 670,000 known asteroids there, but there could be millions more not yet found. Readers will discover much more about the asteroid belt in this highinterest book, which blends science and math. They'll read about several topics, such as space missions to the asteroid belt and the difference between an asteroid and a planet, and solve associated math problems-just like actual space scientists do!

This starter volume uses everyday examples such as a baseball and a beach ball to demonstrate the contrast between hard and soft objects.

One Direction es una de las bandas más divertidas y más famosas de todo el Reino Unido. ¿Te considerás un/a verdadero/a directioner? ¡Vení a leer esta enciclopedia y enterate absolutamente todo sobre tu banda favorita de la A a la Z!

En las palabras quirúrgicas que Cristóbal Pera tan magistralmente define, describe, analiza y valora, nos adentramos por un territorio nuevo, por una cálida geografía donde se enraíza todo conocimiento y todo saber. Por eso, la lectura de tan luminoso libro es una continua incitación al pensamiento-por algo brota del originario saber de las manos-, a la reflexión sobre la vida y la muerte, sobre el dolor y la felicidad, sobre la angustia y la esperanza. Emilio Lledó

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...