Construcción y arquitectura

A young boy eagerly awaits the birth of his brother or sister, while imagining that the baby is in a house inside his mother.

The sun is responsible for all life on Earth, but what exactly is it? Our star is an amazing force that can be as dangerous as it is important. From solar flares to the threat of blowing up altogether, the sun is one of the most interesting things in our solar system. Readers take a trip to the sun to see how it works and exactly what it is made of. They’ll learn about the life cycle of a star and see just how long we have until we have to find a new planet to call home. Don’t worry, they’ll be happy to learn that (hopefully) we have millions of years left!

Libro para adquirir el fundamento de los mecanismos teórico-prácticos de los equilibrios químicos que tienen lugar en disoluciones acuosas. Se inicia con una presentación de los compuestos químicos, de las reacciones químicas y las ecuaciones químicas con los conceptos estequiométricos necesarios para exponer la disociación electrolítica, sus consecuencias y las diversas formas químicas de cuantificar los compuestos en estado puro y en disolución, teniendo en cuenta su disociación y con la utilización de cifras significativas, explicando una estadística básica para la...

Are you ready to embark on a wild counting caper? Imagine... eleven oysters at the opera, eighteen dalmatians dressed in diamonds, and twelve ladybugs shopping in the market! Meet an unforgettable host of zany creatures in this delightful bilingual counting book. Readers will encounter concepts such as color, time, size, shapes, and more as they answer questions relating to colorful cut-paper illustrations. Nancy María Grande Tabor's concise and direct questions encourage thinking while her charming characters entertain. In both Spanish and English, this unique counting book challenges...