¿Por qué hibernan los animales? (Why Animals Hibernate)

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

Eleven-year-old Jenny, whose family came from Russia to America to start a new life, meets the famous Russian composer on his 1891 trip to the New World and writes about it in her diary.

Todo lo que siempre quisiste saber sobre la vida amorosa de los animales. Todos los animales, desde las peludas arañas hasta los fornidos delfines, deben aprender a seducir. ¿Cuántas maneras hay para hacerlo? Tantas como hay especies animales. Algunas de sus tácticas son tan familiares como las de los humanos, otras tan extrañas que son difíciles de creer. En una sutil fusión entre álbum ilustrado y libro de divulgación, este volumen muestra el amplio mundo de la seducción animal, desmintiendo falsas creencias y arrojando luz sobre las distintas maneras en las que se expresa el amor ...

Apartments, houses, log cabins, and houseboats are all kinds of homes, though they can look vastly different. Around the world, families settle into homes that can look quite different than these, yet serve the same purpose: to shelter. This volume will capture readers' imaginations, allowing them to view various types of homes, including the yaodongs of China and Queenslanders of Australia. Beautiful photographs serve to illustrate both architectural and cultural concepts.

The London Eye opened on March 9, 2000. Although it hasn't been there long, the London Eye has already become an iconic symbol of London. No trip to London is complete without a visit to the London Eye! Learn about the history and creation of Europe's tallest observation wheel as you build your arithmetic skills! This Spanish math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, engaging sidebars, practice problems, and math diagrams make learning math relevant and fun. Text features include a table of ...