Agujeros negros (Black Holes)

For many years, people believed there were nine planets that orbited the sun. Now we say there are eight. What happened to the ninth planet, Pluto? What are the different planets like? What exactly makes a planet a planet? These are the many intriguing questions answered with this high-interest book, crafted to be accessible for readers of all levels. Young astronomers will be especially fascinated by the stunning photographs and the "Make the Grade" fact boxes.

Los niños aprenderán sus primeras palabras relacionadas con la naturaleza, la vida cotidiana y la comida. ¿Qué animales podemos encontrar en una granja? ¿Cómo se llaman las frutas que comemos cada día? Estas preguntas se podrán trabajar en familia gracias a este libro, que destaca por sus colores vistosos y sus fotografías a todo color.

Life in the Southern Hemisphere is bitterly cold for most penguins, but they don't seem to mind. Most penguins live in large colonies on the coast of Antarctica or on nearby islands. Readers explore penguin colonies for themselves, learning fun facts about these beautiful birds with the help of accessible text. Readers learn how penguin families work together to feed their young and keep them warm. A helpful graphic organizer aids in reader understanding. Readers will enjoy detailed images of penguin species at home in the Antarctic with every turn of the page.

It is the third Monday in January and school is closed. But do you know why? It's Martin Luther King Jr. Day. Turn the pages of this book to find out what dream Dr. King shared with the world, who Mohandas Gandhi was, how one brave woman helped Martin Luther King Jr. change history. Each book in the Holiday Histories series describes one of America's holidays or special days. Explore the history of each day and learn the real reason why it is important. Discover what special meaning each day might have for you.

Componen este método de preescritura 10 cuadernos de ejercicios ordenados de forma progresiva y estructurada de menor a mayor dificultad.;Su finalidad es la de iniciar al niño en el desarrollo de las habilidades motrices finas que necesitará en el futuro para la escritura.;Es un método analítico, que se basa en la repetición por separado de los movimientos de la mano, hasta llegar a conseguir una habilidad motora que permita después trazar, todas las letras.;En ese título de la colección se trabajan combinaciones de trazos verticales, horizontales y oblicuos, combinaciones de trazos...