Bray Jacobson 
La Constitución de Estados Unidos (The U.S. Constitution) [PDF ebook] 

The highest law in the United States isn »t written in modern English. Yet students are expected to know and understand much of what it says, as well as facts about how and why it was written. Readers are presented with the most important points of the history of the Constitution and its contents in this book. The main content gives simple explanations of important social studies curriculum topics, from the compromises needed to write the Constitution to the Bill of Rights. Fact boxes, a concluding timeline, and historical images offer readers even more detail needed for a full overview of the document.