Lo que los fósiles nos enseñan sobre la Tierra (Investigating Fossils)

Advances in science have changed our world, all thanks to the scientists behind important discoveries. Some of the most important discoveries have come from female scientists, who were as unique for their work as they were for being trailblazers in a male-dominated industry. This text offers a biographical treatment of such important scientists as Marie Curie, Rachel Carson, and Jane Goodall, as well as others who have made it possible for women of the future to have a career in science. Age-appropriate text, fact boxes, historical and modern images, and a comprehensive timeline complete the...

Everyday examples, such as a motorcycle and a tricycle, demonstrate differences in speed. A simple, Spanish narrative runs beneath the photographs.

Roam the North American wilderness with some of our continent's most fascinating canines. Stunning color photos capture these wild animals in their natural surroundings as the text describes each canine's habitat, physical features, and special abilities. Explore the social lives of these captivating creatures, their amazing survival techniques, reproduction, development, and interaction with humans. Discussions of threats to habitat and hunting promote environmental awareness in young readers.

13 cuentos bellamente ilustrados, recogidos en el remoto Valle de Atríz, viajan hacia tí, incansable lector, para llevarte a conocer la tradición del pueblo que vive y ama al pie del coloso Ninan-Urcu, la Montaña de Fuego, al sur, muy al sur de la tierra colombiana. Vamos juntos hasta allá.