El poder de Heka

Animals hide to avoid being eaten or to sneak up on animals they want to eat. This amazing book introduces children to some basic science concepts. Fascinating photographs feature animals that can change color, or that have different shapes and patterns, so that they can blend into their surroundings. A special section also features animals that do not need to hide.

Tackle today’s toughest races while learning fractions! Marvel as contestants around the world climb, crawl, run, and jump through the world’s toughest marathons and obstacle courses. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn fractions while engaged in reading high-interest content. The glossary, index, and table of contents will further understanding of reading and math concepts, and the full-color images, practice problems, and math graphs and charts...

La comprensión, aprendizaje y aplicación de las Ciencias Experimentales, especialmente las destinadas al estudio de la Física y la Química, requieren una dedicación muy personal a la resolución de cuestiones y ejercicios que motiven el interés hacia estas materias. Este libro presta una ayuda complementaria a las explicaciones del libro de texto y de la clase. Ofrece, para cada Unidad, un resumen de los conceptos, unidades y fórmulas más importantes, así como un buen número de cuestiones, ejercicios y problemas explicados y resueltos, todo ello con el fin de afianzar y ampliar los...

There are government leaders all over the world that work at the city, state, and national level. This captivating Spanish book will allow readers to learn about various jobs in government including politician, statesmen, governor, and mayor. A look into the past includes a brief history of the U.S. government and some of the most important offices such as heads of state, Congress, seats in the Senate and House of Representatives, and the president. The fascinating facts and brilliant images combine with the supportive text and helpful glossary and index to provide a reading experience that...