¿Quién fue?: Historia del mundo

What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier.

People have been sending mail for a long time. But how they do it has changed a lot! Read about the history of mail as you learn to collect data. This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning data measurement easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section...

Lyndon B. Johnson was born in Texas in the early 1900s. This appealing biography has been translated into Spanish and highlights Johnson's life as he represented Texas in the United States Congress for 24 years and became the 36th President of the United States. Through engaging images, intriguing sidebars and facts, easy-to-read text, and a supportive glossary and index, readers will learn about interesting topics such as the Higher Education Act, Voting Rights Act, Minority Whip, and the Vietnam War. Readers will be eager to learn more about Johnson's fascinating life as they move from...

Un ensayo indispensable para orientarse, a partir de ideas claras e ilustradas, en la crisis política actual. «En estos dieciséis años», afirma en el prólogo su autor, «terminó por diluirse el clivaje democrático-autoritario para dar paso a una constelación de temas y problemáticas nuevas: progresismo, lucro, derechos sociales, feminismo, corrupción, abuso, dignidad, corrección política, entre muchas otras. Entre ellas, por supuesto, populismo. Este libro contribuye a una mejor comprensión de dicho concepto. No busca cerrar el debate sino más bien explorar sus posibilidades,...