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

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.

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.

En esta antología realizada por Andrés Sánchez Robayna, la más completa que se conoce hasta la fecha, queda bien acotado el espacio poético que José μngel Valente ha sabido crear en más de cuarenta años de oficio: tras cada pieza escogida, desde el primer poema hasta la última de sus composiciones, late esa percepción de la poesía como conocimiento en la cual el poeta es el mago que hace aparecer la realidad mediante el mismo acto de la escritura. La palabra en sí es la travesía reveladora, no el medio de comunicarla. La selección de Andrés Sánchez Robayna contiene poemas...

Understanding the concepts of solids, liquids, and gases is central to the early science curriculum. States of Matter uses simple, authentic Spanish text to introduce ELL students to these important concepts. Each book features a strong photo-text match and clear, full-color diagrams to enhance comprehension.

Quaderns d'activitats trimestrals per consolidar i ampliar els continguts del llibre de l'alumne Aprenc a escriure en Primària, amb activitats de vocabulari, gramàtica, ortografia i expressió escrita.

Hercules, son of the god Zeus and a mortal woman, renowned for his great strength, performs twelve dangerous tasks to atone for an attack on his wife and children.