El chip experimental

Offers a description of Earth, the third planet from the sun, which includes information on its origins, composition, and unique characteristics.

We are a nation of immigrants. Even many of the faces we see on TV and in the news are recent immigrants. Meet these new Americans and learn their stories, whether they are athletes, musicians, artists, politicians, or businesspeople. Discover how all immigrants, along with natural-born American citizens, form a mosaic of different cultures and traditions. Written in standard Latin American Spanish.

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!

In life there are lots of things that come and go, transform, or get left behind. It happens to everything . . . except this. This book deals with life changes and the passage of time with a great deal of sensitivity. To reinforce the message, each scene includes a page with special paper that invites us to witness the transformation.