César Chávez

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

Take a journey into the wild world of reptiles and amphibians! Readers will learn about crocodiles, lizards, snakes, tortoises, and salamanders. Featuring a glossary, index, colorful images and charts, intriguing facts, and clear, informative text, readers will be sure to be enthralled as they move through this engaging, Spanish-translated book.

For Barack Obama, becoming president of the United States brought big changesfor him, his family, and the country. Every day he faces important meetings, tough decisions, and the opportunity to meet new people. But he still finds time to invite friends over for a movie and walk Bo, the White House Dog, with his daughters, Sasha and Malia. How does he do it all? Follow the President through his day and find out what it's like to be Barack Obama. Para Barack Obama, convertirse en presidente de Estados Unidos fue un gran cambio, tanto para l, como para su familia y para el pas. Todos los das...

Los haikus son una de las formas poéticas más conocidas y más apreciadas en el mundo. Son tan sencillos que se pueden enseñar a los niños, aunque asimismo pueden ser fruto de una vida de estudio y de dedicación. En su exploración evocadora de la vida y de la naturaleza pueden manifestar también un delicioso sentido del humor y de lo lúdico. Estas poesías no solo son expresiones de la delicada sensibilidad japonesa, sino de las intemporales reacciones humanas ante el mundo que nos rodea.