Un mar de historias: Altamira

Esta serie de cinco títulos, es una guía práctica y sencilla, que demuestra que pintar con acuarelas no es tan difícil como algunos creen, si se siguen las indicaciones dadas por el autor.

Técnico electricista 4 - Curso visual y práctico Corriente alterna En esta clase nos encargaremos de profundizar en la generación de corriente alterna y conoceremos los valores típicos de este tipo de corriente. Además, revisaremos las inductancias, los capacitores y la aplicación de la corriente alterna en estos componentes.Para terminar, veremos los efectos propios de la corriente alterna, y caracterizaremos la resonancia y los armónicos.

"Carlitos writes a letter to the Three Kings asking for lots of presents. Later, he decides to write a new letter and gives up some of the things in his wish list in exchange for a bigger gift for his older brother, who is teaching him how to ride a bike and lets him use his own big kid's bike. At the end, everyone wins...! Contains an informative section about Christmas and Three Kings Day."

George Washington Carver was a skilled botanist who became famous for his work with peanuts and other plants. Readers will discover the captivating life of this incredible scientist in this engaging scientific biography translated in Spanish. Using colorful photos and graphs, children will learn why Carver was known as "The Plant Doctor" as a child and how his work with peanuts, sweet potatoes, and pecans helped change the way people used plants! The helpful glossary and index aid in better understanding of the content, while a simple, interesting experiment leaves Spanish-speaking children...