La antigua Roma (Ancient Rome)

Wind Power: A waving flag, blowing leaves, a kite soaring through the skyall are moved by wind power. Wind is also our fast-growing source of energy. Find out how wind forms and the different ways we may use it in the future.

For many years, people believed there were nine planets that orbited the sun. Now we say there are eight. What happened to the ninth planet, Pluto? What are the different planets like? What exactly makes a planet a planet? These are the many intriguing questions answered with this high-interest book, crafted to be accessible for readers of all levels. Young astronomers will be especially fascinated by the stunning photographs and the "Make the Grade" fact boxes.

Doce lecciones listas para usarse en grupos juveniles que son perfectas para grupos de escuela dominical, reuniones juveniles o ministerios de grupos pequeños. Las lecciones están diseñadas para estimular el aprendizaje y contienen ilustraciones y diagramas para hacer el aprendizaje más efectivo. Tienen un enfoque totalmente contemporáneo y adecuado a la juventud del nuevo siglo. Usan lecciones interactivas, dramatizaciones, diálogo y discusiones. No hay productos semejantes en el mercado.

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.

Javier de Montcada hubiera muerto en la batalla de Brunete si Soledad, duquesa de Simancas, no le hubiera donado su sangre en el mismo campo de batalla. Tras reponerse de sus heridas, Soledad, casada con el representante del bando nacional en el Vaticano, lo seduce en su dehesa. Pero la guerra no ha terminado y Javier debe volver al frente. Una novela apasionante. Un gran fresco histórico.