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

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.

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Las ratas y los seres humanos han sido enemigos naturales por millones de años. Pero ahora, de forma repentina y monstruosa, el equilibrio de poder ha cambiado por primera vez y las ratas empiezan a cazar a los humanos sin piedad. James Herbert fue uno de los escritores más vendidos del Reino Unido (posición que mantuvo desde que publicó esta, su primera novela) y fue uno de los mejores escritores mundiales de terror. Sus libros han sido traducidos en más de 30 idiomas, incluyendo ruso y chino y sus 19 novelas han vendido más de 42 millones de ejemplares en todo el mundo. Como escritor, ...

Full color, full-page photographs throughout with straightforward and engaging text, the I Want to Be... series is an appealing and engaging introduction to a broad spectrum of occupations. The I Want to Be... series gives young children a realistic insight into the working day of adults. Easy-to-read captions and color photographs of women and men from different cultures help children understand what's involved in each occupation. Young readers learn to respect the importance of doing a job well and appreciate the contributions these workers make to our life and the world around us. These...

Clara y Jorge acaban de mudarse a una urbanización porque la convivencia con los vecinos del edificio donde vivían era insoportable. Esperan que ahora todo sea diferente, pero arrastran un secreto oscuro del que no pueden librarse y, aunque sus nuevos vecinos los acogen con entusiasmo, pronto descubrirán cosas terribles de su pasado que abrirán una grieta insalvable entre ellos. Los perros siempre ladran al anochecer es un relato de suspense que se lee de un tirón y que al mismo tiempo arroja luz sobre la condición humana, las dudas que lastran la existencia y la dificultad de enterrar...

Tailored to the 2013 IB Language B syllabus, our full-colour coursebook, Mañana, contains everything you need to succeed in your two-year Spanish B course. This coursebook prepares students for the 2013 Spanish Language B syllabus (first examination 2015), at both Standard and Higher Level. It is totally international, offering authentic materials from a variety of Spanish-speaking countries. The texts and topics have been chosen because of their intrinsic interest to young people, and to enable students to develop a genuine intercultural understanding. The exercises are carefully designed...