Ejercicios de ortografía para la ESO

This historical novel will fascinate young readers as they learn about Mayan customs and lifestyle. A glossary of Mayan terms and authentic drawings will help children understand this highly advanced culture. Text copyright 2004 Lectorum Publications, Inc.

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...

Provides an overview of the design, uses, weapons, and equipment of U.S. Navy submarines. Written in English and Spanish.

Guadalajara esconde en su geografía un gran número de rincones desconocidos para la mayoría de los senderistas. Las 30 rutas que propone esta guía nos harán descubrir solitarios caminos de montaña, profundos barrancos y extensos bosques donde la naturaleza y el paisaje se han conservado casi intactos.Castros celtíberos, iglesias románicas y castillos medievales también nos acompañaran en esta selección de recorridos, evocándonos épocas pasadas.