¿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.

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.

Different colors are all around us, and this series explores what they look like and where they can be found. Students identify common colors from everyday life, such as red, blue, green, yellow, and how to describe them. They also learn to classify colors by examining what types of objects display each color. Consistently placed and leveled text helps to ensure subject matter is clearly understood.

Dioses, héroes y criaturas legendarias. ¿Sabes quién sostiene el universo sobre su espalda? ¿O qué dios es el responsable de que exista el invierno? ¿Conoces a la criatura más terrorífica que haya existido jamás? En 100 mitos descubrirás las mejores historias de la mitología griega y romana: aventuras repletas de objetos mágicos, monstruos temibles, amores legendarios, héroes audaces y castigos divinos que, miles de años después, siguen siendo igual de emocionantes que el primer día. ¿Te apuntas a conocer las historias más épicas jamás contadas?

This collection of four titles approaches the four essential ethical topics of the virtues of listening, prudence, patience, and effort. Each of these virtues is highlighted through illustrated mini stories so children can understand the importance of nurturing and strengthening them in themselves and in others.

Adivina y Pegatina son libros de adivinanzas de estructura sencilla, siempre breves y en verso, que motivan a los niños y niñas a encontrar la solución. La solución, en este caso, viene dada en unas pegatinas que aparecen en las páginas finales del libro. De esta manera se pretende que el niño visualice el objeto que corresponde a la solución de cada adivinanza. Los enunciados de las adivinanzas están integrados en unas ilustraciones muy infantiles, sugerentes y divertidas formando libros mágicos y lúdicos que apetece leer y releer, porque siempre se encuentra algo nuevo. Cada...