¿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.

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

Did you know that early explorers initially thought that California was an island? Learn how California was discovered with this Spanish book that focuses on the history of California. Students will learn about the contributions of Henry Hudson, Juan Rodriguez Cabrillo, Hernan Cortes, Francisco de Ulloa, and Sir Francis Drake. With a visually appealing layout, this primary source book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. Packed with information and primary source maps, images, and ...

"Hace un año, en una clase de español, Sylvie conoció a Otto, que soñaba con volar como los pájaros. Pero un día, él se fue y la dejó sin noticias. ¿Qué significa ahora el telegrama que envía desde un pequeño pueblo del norte de España?"--Page 4 of cover.

One of the skills employers want most in new hires is the ability to speak well. Public speaking can not only advance a person in almost any career but can also help an individual do better in school as well. Following the English Language Arts standards for Speaking and Listening, this book teaches readers why public speaking can be such an effective tool, how to craft a powerful speech, and how to overcome one of the most common problems people have with talking in front of a crowd�stage fright.

Desde pequeña, cuando Jem mira a alguien a los ojos, puede ver unos números: la fecha en que esa persona morirá. Para muchos esto sería un regalo, pero ella lo considera una carga. Este don la convierte en una joven especial y solitaria, hasta que conoce a Spider y su vida cambia por completo. Paseando un día por Londres con su amigo, Jem presiente que algo malo va a suceder. Esto desencadenará la huida de los dos jóvenes, no sólo de la justicia, sino también de sí mismos y de su propio destino. Ambos se convertirán en fugitivos y dejarán atrás la inocencia, al mismo tiempo que...