El ciclo del nitrógeno (The Nitrogen Cycle)

"«A mi padre lo mataron una tarde que hacía mucho sol, aunque no lo supimos en ese momento. Él estaba del otro lado del mundo, en la selva oscura de Angola.» La infancia de Ernesto termina con esa noticia, a los doce años, un día que regresa de jugar en el bosque de La Habana. A los ojos de los demás se ha convertido en el hijo de un héroe enviado, como tantos otros cubanos, a la guerra de Angola. Bajo el peso de esa responsabilidad, Ernesto comenzará a percibir la contradictoria realidad de la Revolución y a indagar obsesivamente sobre el largo periodo de la presencia cubana en...

Think there's just one fairy tale with a girl who meets danger in disguise? Think again! Cultures all around the world have their own Little Red Riding Hood stories. Visit Germany, Italy, and Taiwan, and find out whose "sick grandmother" is a tiger, and who is saved not by a "kind hunter" but by a talking river. Fully translated Spanish text.

Students will develop their geometry skills as they study the shapes and patterns in Native American art. This book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach geometry concepts. Text features include a glossary, an index, captions, and a table of contents to increase students’ vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, math charts and diagrams, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they’ve learned to their ...