Conservar y restaurar papel

Even as the world changes, skilled labor will always be needed. There's nothing quite like the ability to create things with your skills and your own hands. Carpenters use their skills to build things we use every day, including items such as furniture, buildings, and bridges. They read building plans, choose materials, design, and create. This book teaches kids that to become a carpenter, you have to use a lot more than a hammer and nails; you need your brain too. Photographs and diagrams enable readers to make key connections with the text.

This Spanish book introduces students to the concepts of solids and liquids. With images that are easy to identify and clear, simple sentence structures, this science reader simplifies scientific concepts for young students as they improve their reading skills. A fun and easy science experiment and Your Turn! activity provide more in-depth opportunities for additional learning. Nonfiction text features include a glossary and an index. Engage students in learning with this dynamic text!

Encuentra las respuestas a 70 preguntas sobre el espacio. �En qu� se diferencian los planetas de las estrellas? �Por qu� no sentimos que la Tierra se mueve? �Qu� origina las estaciones en la Tierra? �Hay vida en otras partes del universo? Puedes convertirte en un experto del espacio y sorprender a tu familia y a tus amigos con datos fascinantes. Cientos de datos e ilustraciones impresionantes que describen la belleza de nuestro universo con detalles espectaculares.

Un anciano aparece muerto en un granja de la provincia de Lleida, y en un principio todo apunta a que ha sido asesinado. Junto a él se descubren una serie de documentos que permiten sospechar que, en el pasado, la víctima pudo estar relacionada con un agente de la Stasi, la temida policía estatal de la República Democrática Alemana.