Los ciclos de vida de los peces (Fish Life Cycles)

Many insects hatch from eggs and molt several times as they grow bigger. Others, such as butterflies, undergo a complete metamorphosis. A common science curriculum topic, insect life cycles may be confusing because of these differences. However, this book breaks down these cycles into easy-to-understand steps in both accessible language and colorful diagrams readers can turn to for review again and again. The most important vocabulary needed to talk about insect life cycles is further explained in fact boxes and an extended glossary.

Why is it dark at night? What causes earthquakes? This attractive one-volume encyclopedia is a good starting point for young learners. Through highly detailed illustrations, photographs, and age-appropriate text, this book answers many questions children have about the world around them. Text copyright 2004 Lectorum Publications, Inc.

Entendiendo que la educación actual no prepara para la muerte, el libro introduce este tema en los ejes transversales del currículo actual ya desde la Educación Infantil, tratando de superar toda visión estética y determinista del asunto. Ofrece recursos didácticos, propuestas preventivas y una completa bibliografía.

People today refer to the Midwestern and prairie states as flyover country. During the Civil War, crossing those areas was the biggest obstacle in uniting the East and West Coasts of our divided nation. An act of Congress in 1862 authorized the Central Pacific and the Union Pacific railroad companies to build a railroad that would link the coasts. Seven years later, on May 10, 1869, an overwhelmingly immigrant labor force completed the task when a rail line was join in Promontory, Utah. The states had become united at last.

Engage readers' interests and imagination. These award-winning biographies feature the breathtaking, illustrations for which the On My Own books are known. Written in story format, each book features pivotal episodes that reveal what kind of person the subject is (or was) and how he or she came to be famous.