Anatomía para niños y jóvenes

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.

From Mexico to the tip of South America, Latin America features varied scenery, including deserts, grasslands, plains, and mountains. Some are extreme: The Andes is the world's longest mountain range, and the Atacama Desert has not had rain for over 400 years! Latin America's remarkable landscape is an essential factor in its surprisingly different climatic zones. This insightful volume offers a comprehensive tour of the many vibrant countries of this fascinating region, highlighting its most striking areas in vivid photographs. It is also an inviting exploration of geography, natural...

Técnico electricista 7 - Curso visual y práctico Mediciones eléctricas En esta clase veremos los fundamentos relacionados con la medición y los instrumentos utilizados para realizar estas tareas. Conoceremos las características del voltímetro, el multímetro y el vatímetro; también veremos el funcionamiento del megóhmetro, de los medidores de energía y del telurímetro, y los detalles de la pinza amperométrica. Para finalizar, entregaremos detalles relevantes sobre los sistemas de medición y conoceremos las unidades de medición más importantes en electricidad.

A 2014 survey by the Substance Abuse and Mental Health Services Administration showed that 8.7 million youths ages twelve to twenty reported drinking alcohol beyond “just a few sips” in the previous month. Those who start drinking before age fifteen are five times more likely to become dependent on alcohol than those who begin at twenty-one. This resource shows young people how to help a friend who is abusing alcohol. It arms them with facts about alcohol, how it affects the teen mind and body, how to look for signs of a problem, and how to bring others on board to help.