Medida del tiempo en las carreras (Timing Races) (Spanish Version)

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!

Ideal for English language learners, this Spanish-language series provides a lively first look at people and countries around the world. The simple text is supported by large, colorful photos. Titles feature an overview of each country's people, land, weather, homes, food, and lifestyle.

¿Por qué las alcancías tienen forma de cerdito? Si todos los billetes cuestan lo mismo, ¿por qué valen diferente? ¿Qué es el trueque? Aprender a tomar decisiones, a negociar (sí, ¡el intercambio de estampas en el patio es la primera y más dura de las transacciones a las que nos enfrentamos!), y entender la diferencia entre precio y valor es fundamental. Este libro ilustrado nos muestra de una forma muy dinámica, divertida y eficaz las claves básicas para aprender a gestionar la mesada y entender qué es el dinero. ENGLISH DESCRIPTION Why are piggy banks shaped like pigs? If all...

Expressive language by the Mexican ballerina, choreographer, and teacher explores what she calls the "poetry of images" in Puebla--a classical ballet and an interpretative modern dance with multiple people forming a slithering snake across the stage--accompanied by a series of stunning black and white photographs that capture the variety of expression and the fluid grace of the dancers.