Conoce a Cristbal Coln

Examines the apparent connection between birds and dinosaurs by comparing fossils, dinosaur bones, and modern birds.

"Discusses the role of the oceans on Earth and introduces waves, tides, and water pressure"--Provided by publisher.

Alexander Graham Bell was always trying to invent new things! In this biography that has been translated into Spanish, readers will learn about Alexander's life as a teacher and inventor of such incredible inventions as the telephone, record player, and metal detector. Colorful images, supportive text, an interesting timeline, and a helpful glossary, table of contents, and index combine to give readers an inspiring look into the life of Alexander Bell.

En casa de la familia Vilarejo todo ha dado la vuelta, como un calcetín. Han empequeñecido de tal manera que ahora viven, atemorizados, en el escondrijo del ratón Rimsky.