El eco del silencio

Who wants new pants? Not this little boy! He wants to keep his old, worn, torn, too-small pants. His mom does not agree.

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.

Una guía que lleva a los niños por una maravillosa aventura: los conceptos económicos. En esta libro los niños aprenderán cómo manejar su dinero, descubrirán los secretos de las finanzas y adentrarán en el fascinante mundo de la banca.

On April 7, 1805, Sacagawea left Fort Mandan to begin the famous westward exhibition with Lewis and Clark. With over 100 black-and-white illustrations, Sacagawea's fascinating journey and life story comes to life in Spanish!