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.

Students will gain a deeper understanding of the Cold War by delving into major social studies topics in this project-based examination. The volume presents a series of broad questions touching on major themes in the social studies curriculum. Each question is accompanied by several paragraphs examining that question in the context of the Cold War, as well as a detailed project that prompts readers to think critically and present their findings or opinions in a particular format, such as a poster with side-by-side comparisons, a persuasive essay, or a class presentation.

"¿Qué hace el gato? ¿Cuál es el sonido de la rana? ¿Cómo canta el petirrojo? 50 animales diferentes toman vida gracias a los círculos presentes en cada página y sobre el dibujo de cada animal. Dividido en siete hábitats distintos, este libro da a conocer diversos animales, comunes y no tan comunes, enriquece el vocabulario y desarrolla la motricidad fina de los niños."--Back cover.

A visual feast of shapes, colors, and poetic riddles, this unique book combines contemporary art with a game of puzzles and observations. Hidden among spectacular pop-ups are hundreds of words and images, including a heart, a teardrop, a smile, flowers, and letters of the alphabet. Children discover new hidden objects with every read and lose themselves in the beauty of each magnificent page spread. Un festival visual de formas, colores y acertijos poéticos, este libro único combina el arte contemporáneo con un juego de adivinanzas y observación. Escondidos entre los desplegables...

This nonfiction book explores the history, culture, customs, and beliefs of California's American Indian tribes including the Chumash, Tongva, Hupa, Yokuts, Quechan, and Coso tribes. Detailed primary source images in conjunction with Spanish text provide 3rd grade students with an inviting reading and learning experience as they build their social studies knowledge. This book includes basic informational text features including a glossary, an index, table of contents, and reader's guide. Students will be intrigued by Native American history with this fascinating nonfiction Spanish book.