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

Although Earth is mostly made up of igneous and metamorphic rock, sedimentary rock covers about 75 percent of Earth's land surface. This means it's the most visible kind of rock on Earth. Sedimentary rocks form when sediment accumulates and compacts. Your readers will learn how sedimentary rocks form, the different types of sedimentary rocks, and how people use sedimentary rocks. Fun fact boxes provide readers with additional information. A helpful diagram illustrates how sedimentary rocks form.

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.

"A kindergarten-level introduction to polar bears, covering their growth process, behaviors, the habitats they call home."--

Neurociencia y Didáctica se unen en este libro para recorrer el comienzo de un sendero entre nuestras neuronas, emociones, miedos, recuerdos y experiencias, apostando por un aprendizaje equilibrado a nuestra propia naturaleza y capacidades.

Do you know the important skills it takes to survive in the jungle? Learn about them in this useful, Spanish-translated nonfiction title. With helpful diagrams, vital tips and instructions, vivid images, and a glossary of useful terms, this title will have readers feeling aware and prepared!

Después del último ataque sufrido, los habitantes de Pueblo han recuperado la tranquilidad y su existencia transcurre en paz. Todo parece funcionar a la perfección. Sin embargo, una serie de misteriosas desapariciones van a alterar las cosas... Una amenaza externa, con forma muy peculiar; una criatura extraordinaria dotada de una poderosa arma; una clave por descubrir... El equipo formado por Willy, Vegetta y sus mascotas, Trotuman y Vakypandy, arriesgarán de nuevo sus vidas y pondrán a prueba su ingenio para solucionar el problema.