La reproducción de las plantas (Plant Reproduction)

Introduces different kinds of light, the properties of light, and how light can create shadows of different shapes and sizes.

Eran los últimos años del siglo XV. Los Reyes Católicos acababan de conquistar Granada, y Colón estaba casi preparando las carabelas para su aventura americana. El 31 de marzo de 1492, un edicto de expulsión arrojaba de España entre trescientos y cuatrocientos mil judíos.

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.

Readers learn the basics of caring for common household pets, from physical features, to behavior, to diet. Also explored is how the animal's natural habitat differs from the habitat provided in the home.