La energía

"It's easy for superpowered crimefighters to turn invisible and sneak up on bad guys. What about real crimefighters? Find out how scientists are using technology to make things disappear before our eyes. Now in Spanish!"--

This extraordinary book shows in a simple way how the Sun's light and warmth affect Earth. Children will be amazed to learn that the Sun is actually a star, and that its position and distance from Earth cause day and night as well as changing weather and the seasons. Simple, brief explanations also describe Earth's rotation and tilt, Earth's two poles and the equator, a solar eclipse, how plants make food from sunlight, and how sunlight colors our world.

Abordando con detalle todos los aspectos del viaje a caballo, este libro permitirá tener éxito en la preparación, la realización y la explotación. Contiene una síntesis estudiada de las soluciones europeas a los problemas de viajes largos, pero también la descripción exhaustiva de las técnicas originales provenientes de la experiencia del autor o tomadas de los pueblos caballistas del Nuevo Mundo.

Aquí se presentan historias favoritas de la Biblia narradas especialmente para la hora de la lectura. En cada página, las palabras sencillas y respetuosas cobran vida con bellas y alegres ilustraciones. Best-loved Bible stories are especially retold for story time. The simple and respectful words are brought to life with bright and appealing illustrations on every page.