Halloween

Before there was the U.S. Constitution, there were the Articles of Confederation. Readers discover the story behind the first written constitution of the United States—from the factors that inspired its creation to the reasons why it was replaced. The detailed main text is enhanced by informative sidebars and graphic organizers. Historical images, including relevant primary sources, allow readers to immerse themselves in this historical period. Readers are given the chance to thoroughly examine elements of the original document, making them feel like true historians. They’re sure to enjoy ...

Simple text and photographs provide opportunities to practice counting and share in the excitement of watching a parade.

Got a fan of snakes, lizards, and turtles? Dig into this beginner's guide to reptiles from Cathryn and John Sill, creators of the award-winning About... series. Author and educator Cathryn Sill explains in simple language the basic characteristics that all reptiles share, while offering a look at many of the animals that fall into this diverse category, including ever-popular lizards, snakes, and turtles. The beautifully detailed paintings of noted wildlife illustrator John Sill depict reptiles in their habitats and highlight their unique aspects. An afterword provides more detail on each...

Los contenidos de este libro se corresponden con los de la unidad formativa 0217, del módulo "Proyectos de montaje de instalaciones de energía eólica", perteneciente al certificado de profesionalidad "Gestión del montaje y mantenimiento de parques eólicos". Las instalaciones de energía mini-eólica se valen de pequeños aerogeneradores con una potencia inferior a los 100 kw. Por ello, se están usando con éxito para suministrar electricidad a lugares aislados, como viviendas o señalizaciones. Este texto reúne todos los aspectos a tener en cuenta a la hora de realizar una de estas...