Técnico electricista 7 - Mediciones eléctricas

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.

Imagine getting ready for bed when the sun is still shining, or eating lunch when it’s dark outside. How are such things possible? Learn how people in places such as Alaska, Norway, Iceland, Sweden, and Canada cope with days and days of sunlight and darkness. Created in collaboration with the Smithsonian Institution, this STEAM book will ignite a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career...

Saltando en las hojas, celebrando el Día de Acción de Gracias, viendo animales, ¿qué te gusta hacer en otoño? Lea acerca de las actividades de otoño y conozca el ciclo de estaciones en esta edición en español. Las fotografías vívidas y las preguntas de pensamiento crítico involucran a los lectores a descubrir los cambios que trae esta colorida temporada. Este texto cuidadosamente nivelado es una divertida introducción a la lectura de no ficción para niños. Jumping in leaves, celebrating Thanksgiving, watching animals—what do you like to do in fall? Read about fall activities...

Explore the lifecycle of a butterfly and learn about the transformation of caterpillars into beautiful butterflies. The connection to language arts is the rich vocabulary related to butterflies, caterpillars, and their transformations.