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!

Para arriba y para abajo, hacia el frente y hacia atr‡s, para los lados o alrededor. Descubre c—mo se mueven las cosas y quŽ hace que paren en este libro sobre el movimiento.

Illustrations and text present the history, geography, people, politics and government, economy, and social life and customs of Arizona, the Grand Canyon State.

What are the busy little Christmas mice up to on Christmas Eve? Find out in this delightful board book filled with different touchy feely textures and sparkling surprises.

Lara Finch lives a lie. Everyone thinks she is happily married to the faithful Sam. She is actually super bored and misses working. Behind Sam's back, she takes a job in London. Twice a week she takes the sleeper train, where she meets Ellen and Guy. One Friday, Lara disappears from the train without a trace. Her friend Iris does not believe the official story she is told about the disappearance and decides to start her own investigation. Iris cannot believe what she finds out.