¿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.

Que tienen Adan y Jesucristo en comun? Que tienen Eva y la virgen Maria en comun? Mas de lo que te imaginas! Por medio de las mas impactantes ilustraciones, a todo color, Maura Roan McKeegan ha logrado que la topologia biblica para ninos cobre vida. Al tomar dos historias biblicas sumamente familiares, una del Antiguo Testamento y la otra del Nuevo Testamento, esta obra permite que los ninos puedan ver como las figuras, o tipos, biblicos emergen de las paginas de las sagradas escrituras para, de esta manera, configurar lo que los teologos llaman la topologia biblica. La topologia biblica se...

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther.

Una colección de libros para dejar de ser un bebé. La fantasía nos ayuda a crecer, y con el pato del pipí, la oveja de los sueños, el elefante de los mocos y el pájaro de la comida, los más pequeños aprenderán a utilizar el orinal para hacer pipí, la almohada para dormir, el pañuelo para sonarse y la cuchara para comer.

English Spanish children's book. Perfect for kids studying English or Spanish as their second language. Books are the best presents for holidays and everyday. Includes 3 kids' favorite bedtime stories: I Love to Sleep in My Own Bed, I Love to Brush My Teeth, I Love to Keep My Room Clean