Exploremos el ciclo de la roca (Exploring the Rock Cycle)

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

LA ENCICLOPEDIA BRITÁNICA PARA NIÑOS. APRENDE Y DISFRUTA CON SU FORMATO REGALO. ¿Estás preparado para un viaje alucinante a través del universo? Adéntrate en el espacio con esta increíble Enciclopedia Británica, la enciclopedia más reconocida y rigurosa del mundo. ¿Sabías que el universo nació hace 13.800 millones de años? ¿O que se cree que hay 100.000 millones de galaxias? ¿Y que se han encontrado más de 4.000 exoplanetas? Descubrirás que nuestra Tierra se mueve a millones de kilómetros por hora, navegarás entre estrellas (que en realidad son bolas de fuego) y explorarás ...

Based on the life of the great Mexican painter Diego Rivera, this book allows children to learn about his childhood in Guanajuato, his life as an artist, and his works of art. The vivid and colorful illustrations will surely delight young readers!

"A finales de los años setenta, un muchacho perteneciente a la clase media salvadoreña trata de introducirse en los movimientos sindicalistas locales con la intención de conocer el incipiente movimiento revolucionario. Allí conoce a una guapa trabajadora de una fábrica textil y se propone enamorarla. Sin embargo, la situación se recrudece en El Salvador. Las refriegas sindicales devienen en combates contra el orden militar y la vorágine termina arrastrando a todo el mundo a territorios y rupturas que nunca imaginaron. Se ha desatado la guerra civil salvadoreña. Róger Lindo, con la...

Mathematics constitutes ideal material for exercising the art of learning and thinking. For this it is necessary that the classroom has a stimulating atmosphere which requires determined attitudes and beliefs. The book combines theory and practice and responds to questions such as these: to think in the mathematics class? on what does the knowledge of solving problems really consist of? what are the beliefs and which are the most common ones among the students? how to diagnose, evaluate and, in some cases to modify, the systems of beliefs of the pupil?).