Experimentos sorprendentes con la luz

Este libro presenta una serie de ilusiones ópticas que engañarán a la mente y a los ojos por medio de una serie de distorsiones de tamaño, forma y color. Algunas parecen cosa de magia, otras hasta desaparecen. Incluso hay otras que parecen cambiar mágicamente cuando se las observa. No solo presenta las ilusiones ópticas, sino que también las explica, con lo que se puede aprender mucho sobre la luz, el cerebro, la vista...

Students will develop their math skills while engaged in reading about Yosemite National Park. This book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach geometry concepts like calculating perimeter and area. Text features include a glossary, an index, captions, and a table of contents to increase students’ vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, math charts and diagrams, and sidebars provide many opportunities for students to practice their developing math skills, and apply what...

This Spanish language edition of Yuyi Morales's Pura Belpré Award winner and New York Times Bestseller Dreamers is now available in paperback! Caldecott Honor artist and six-time Pura Belpré winner Yuyi Morales's gorgeous book Dreamers, and its Spanish language version Soñadores, are about making a home in a new place. Yuyi and her son Kelly's passage was not easy, and Yuyi did not speak any English at the time. But together, they found an unexpected, unbelievable place: the public library. There, book by book, they untangled the language of this strange new land, and learned to make their ...

Al oír contar la historia de los atentados del 11 de septiembre por un joven Maasai que estaba en Nueva York en aquel día, los miembros de la tribu deciden de donar al pueblo estadounidense catorce vacas sagradas como regalo curativo.

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...