Lágrimas de cristal

Students will develop their geometry skills as they study the geometric shapes of modern art and read about the innovative artists who turned the art world upside down. This Spanish 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...

Esta obra de Miguel de Unamuno es uno de los ejemplos clásicos más eminentes de la novela moderna. La ficción deja aquí de ser un puro vehículo narrativo, transmisor de historias, para convertirse en un universo textual de fecundas sugerencias. Unamuno cuenta de manera extraña su historia, inventando su nuevo género narrativo, la “nivola”, donde los personajes hablan en monólogos propios durante la obra. Agregando extraños sucesos literarios (como el encuentro del personaje con su creador o el monólogo del mismo perro) convierten este libro en un tesoro literario. El título,...

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

Rabbit burrows play an important part in the life of a rabbit. A burrow provides a place to live, a place to raise baby rabbits, and a place to stay safe from predators. This volume, which was written to support elementary science curricula, examines the role a burrow plays in the survival of a warren, and how that in turn helps rabbits contribute to ecosystems around the world. The text’s age-appropriate, science-rich content focuses on rabbit behavior and encourages readers to draw connections between what they learn in science class and what they see outside. This text is complemented by ...