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...

Como pétalos vuvelan las letras y los versos formando un ramo de sentimientos que salen del alma como inspiración y sin remordimiento entre estrofas que fluyen con el viento proveniente de: Argentina, Bolivia, Chile, Colombia, Ecuador, El Salvador, Guatemala, Italia, México, Nicaragua, Paraguay, Perú, Puerto Rico, Uruguay, Venezuela.

Climb aboard for a journey into the world of trains! In this fascinating, Spanish-translated nonfiction title, readers learn about the history of trains, the different uses for them, and the different types and parts including freight cars, box cars, passenger cars, and the caboose. With detailed photos, informative text, and intriguing facts, this book will have readers delighted from cover to cover!

Este libro nos descubre otra historia de los Kennedy, muy distinta a la desenfadada y frívola que se suele contar. La historia de dos hombres, el presidente y su hermano Robert, que mantuvieron una dura lucha contra las fuerzas oscuras de su entorno: contra los generales y los dirigentes del aparato de inteligencia, empeñados en arrastrar al país a una nueva guerra mundial. Una lucha que acabó con el asesinato de John en Dallas, que Robert estaba convencido que era obra de una conspiración del crimen organizado, la CIA y los grupos que planeaban una acción violenta contra Cuba, lo que...

Celebrating tolerance and acceptance, each title in this constructive and accessible series focuses on the rewards and challenges of having a friend with a disability. Everyday situations are accompanied by informative sidebars that provide details about the highlighted disability.