¿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.

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.

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.

Un libro escrito pensando en el profesor y en las tradicionales dificultades que el tema de la educación sexual encuentra en el medio escolar. La obra ofrece un instrumento metodológico para iniciar la programación de la educación sexual en la escuela y su adecuada integración en el currículum escolar. Apunta sugerencias concretas en la formulación de objetivos, selección de contenidos, diseño de actividades y evaluación. El programa abarca los diferentes ciclos escolares, desde la educación infantil a la secundaria. De interés para profesores, tutores, orientadores y psicólogos.

Knowing when to say we're sorry means knowing when we've hurt someone, whether it was intentional or not. This is not always easy to do, especially for children. This book presents readers with a variety of relatable scenarios in which young people recognize the need for an apology. Readers follow Louis as he shares an embarrassing secret about Aaron with his other classmates, who make fun of Aaron. Louis feels bad for sharing Aaron's secret. What can he do? Each colorful spread presents a different real-life situation that will instill in readers the importance of knowing when to say, "I'm...

En el año 1630, la caza de brujas siembra el pánico en toda Europa. Mujeres y hasta familias enteras son víctimas de la inquisición. En un pueblo de Alemania comienzan a surgir rumores acerca de Nina y sus visiones premonitorias. Al ser las amenazas cada vez más siniestras, Nina abandona la casa de sus tíos portando el amuleto de su madre, a la que quemaron por bruja tiempo atrás. Ese amuleto la orientará en todo su camino.

Método de español destinado a estudiantes jóvenes y adultos. Nivel A1+ del MCER. Adaptado a las directrices del Plan Curricular del Instituto Cervantes. Los autores de este proyecto trabajan en el Instituto Cervantes y en la EOI y proponen una metodol