¿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.

La historia de una niña que se pierde en una multitud. Sus ojos se llenan de lágrimas y siente pánico, pero afortunadamente aparece un policía que la ayuda. Gracias a él, la niña pronto está en los brazos de sus felices padres.

Spanish Language Edition Here are 23 favorite Bible stories in which children can enthusiastically participate using hand motions and other fun activities. Use it in Sunday school, childrenrsquo;s church, at home-any time you want to present the appealing concepts and values that form the foundation of faith in kidsrsquo; hearts.

Öke, su hermano pequeño Mikael, y su madre, Kajsa, se han mudado de Finlandia a España. De los tres, Öke es el que más problemas tiene con el idioma y para aprender decide comprarse un diccionario finlandés-español. ¿Quién iba a pensar que ese instrumento le iba a resultar de ayuda en más situaciones de las que pensaba? Una historia que reflexiona con humor sobre los problemas lingüisticos.

People have been sending mail for a long time. But how they do it has changed a lot! Read about the history of mail as you learn to collect data. This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning data measurement easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section...