La fiebre del oro (The Gold Rush)

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

Students will develop their math skills while engaged in reading about the importance of honeybees. This nonfiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, intriguing sidebars, practice problems, and math diagrams make learning place value relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading concepts. An in-depth problem-solving section provides additional learning and practice opportunities while challenging...

Rain, sunshine, warm fronts, and cold fronts. Have you ever listened to a weather report? Knowing the weather can help us plan ahead. But reporters aren’t the only ones who can track weather. You can, too! This nonfiction Spanish book explores the subject of meteorology in depth, and introduces students to important scientific concepts and vocabulary like anemometer, barometer, air pressure, warm front, cold front, rain gauge, probability, Celsius, Fahrenheit, and more. The colorful images, diagrams, sidebars, and text features will keep students connected to the text. Aligned to state and...

Worksheets designed for use in Spanish immersion classrooms, as a supplement for parents to use with their children for extra practice, or for use by any classroom teacher who wishes to incorporate Spanish instruction in the classroom in the curriculum areas of language arts, math, social studies, and science.

Cathryn Deen, considerada la actriz más bella del mundo, sufre un accidente de coche mientras es perseguida por un paparazzi. Desfigurada, cínica y con el corazón roto, se refugia en casa de su abuela, perdida en los Apalaches. Thomas perdió a su mujer y a su hijo en el atentado de las torres gemelas. Desde entonces ha luchado contra el alcohol y la desesperación y piensa que nada ni nadie puede devolverle el sentido a su vida. Hasta que conoce a Cathryn.

A lo largo de mi vida he sido un poco de todo: marchante de arte, predicador en una región minera, profesor de idiomas, vendedor de libros . . . pero, por encima de todo, pitar ha sido mi verdadera pasión. Algunos me conocen como "el loco del pelo rojo" . . . ¿Quieres saber por qué?

Este tomo te permitirá conocer mejor al canguro, un marsupial que sólo vive en Australia y Nueva Guinea. Las hembras de los canguros, como las de todos los marsupiales, poseen una bolsa o marsupio, en cuyo inteiror se amamantan las crías hasta que tienen ocho o diez meses. En este volumen se describen las diferentes variedades de canguro, desde el ualabi de cola corta, del tamaño de una rata grande, al canguro rojo, que mide más de dos metros de altura y pesa alrededor de setenta kilos.