La Sierra de la Demanda

El agua brota salvaje de los verticales paredones rocosos que ocultan, bien protegidos por la apretada sombra de dilatados y extraordinariamente bellos hayedos, el mundo mágico de las cuevas y txabolas que han cobijado a carboneros y pastores desde la historia, cuando concebían dólmenes y menhires bajo la aguda mirada de las águilas reales y los quebrantahuesos. Una apasionante mezcla de deliciosa riqueza natural y interesantísima huella humana que cautivará profundamente al viajeroen las cuatro estaciones.

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.

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.

"Contiene 34 reproducciones de obras de arte muy famosas, de la Galería de Kunsthalle de Hamburgo, el Musée d'Orsay de París, el Museum of Fine Arts de Boston y el Museo del Prado de Madrid"--Cover.

What takes the shape of the container it is in and changes shape when the container changes? Liquids! Liquid is a state of matter that has some big differences from solids and gases. Learn all about liquids with this colorful, Spanish-translated title! This 6-Pack includes six copies of this title and a lesson plan.