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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.

Brief biographies of well-known men and women, from ancient time to the present day, who made significant contributions in various fields.

Rosalinde tiene un agujero en los calcetines. Rosalinde tiene una venda en la rodilla... Las personas que la rodean se fijan en casi todas las cosas de Rosalinde, menos en sus ideas. Sólo su abuelo conoce las ideas que tiene en la cabeza.

Intermediate Readers Explore Concepts Of Evaporation, Condensation, And Water As A Solid, Liquid, Or Gas.