Experimentos con la luz

Many people know that Benjamin Franklin discovered electricity through lightning, but he was also a great inventor and helped write the Declaration of Independence! Young readers will learn about Franklin's life in this appealing biography that has been translated into Spanish and features plenty of vibrant images, supportive text, "Fun Fact" boxes, and an accommodating timeline, glossary, and index. This 6-Pack includes six copies of this title and a lesson plan.

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.

Este libro intenta indagar sobre las garantías de aquellos compuestos que se consumen para mantener o mejorar la salud. Por un lado, describe los fundamentos detrás del desarrollo de agentes terapéuticos descubiertos mediante la metodología científica, y la complejidad que rodea su síntesis, análisis y controles efectivos para su puesta en circulación en el mercado. Por el otro, cuestiona la legitimidad de las afirmaciones acerca de los beneficios de los productos naturales o ecológicos, denominados nutracéuticos, que se nos ofrecen como suplementos de alimentación y la salud. El...

Suitable for training advanced level students in writing texts in different styles and registers in Spanish