El mundo humano

If asked to define a forest, readers might say, "It has a lot of trees." But many places have a lot of trees. So, what makes a forest a forest? Readers discover that a forest is unlike any other biome on Earth. And a temperate forest is even more specific. Readers learn the many life cycles found within a forest and how the energy pyramid explains the numbers of forest plants and animals. In addition, readers learn by examining how forces usually considered destructive work to help forests survive. 32pp.

José Ángel Cilleruelo, el mejor conocedor de la obra de Pérez Estrada, ha preparado esta edición de textos en su mayor parte inéditos con el propósito de dar una visión general del estilo de Pérez Estrada, y eso hace que el lector pueda hallar en ella textos de diversa índole, desde ingeniosos juegos de palabras, hasta mínimos relatos reducidos a su sesncialidad. En su conjunto, se trata de una perfecta panorámica de las preocupaciones, temas, maneras y estilos que cultivó el autor a lo largo de su trayectoria como escritor.

Take a trip to the British Museum as you explore its fascinating objects and geometric shapes! This famous London museum was built for exploration - and for learning geometry. Learn about its history and artifacts as you build your geometry skills. This Spanish math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems,...

¿Qué es eso que oculta la anémona de mar? ¡Un pez payaso, por supuesto! Este título introduce a los lectores jóvenes a estos lindos e icónicos habitantes del océano. Las fotos frescas y vibrantes ayudan al aprendizaje visual, mientras que las preguntas de pensamiento crítico y un glosario de fotos ayudan a desarrollar habilidades de aprendizaje de no ficción. What's that hiding by the sea anemone? A clown fish, of course! Now in Spanish, this title introduces young readers to these cute and iconic ocean-dwellers. Carefully leveled text and fresh, vibrant photos aid visual learning,...