Soy retro porque...

Welcome to the only book that reveals all the secrets of a subject that nobody dares to talk about! How to clean your tail? Why does it smell so bad? Why does it make us laugh just to imagine it?

It is the third Monday in January and school is closed. But do you know why? It's Martin Luther King Jr. Day. Turn the pages of this book to find out what dream Dr. King shared with the world, who Mohandas Gandhi was, how one brave woman helped Martin Luther King Jr. change history. Each book in the Holiday Histories series describes one of America's holidays or special days. Explore the history of each day and learn the real reason why it is important. Discover what special meaning each day might have for you.

Until just over 150 years ago, northern Mexico extended thousands of kilometers farther than its current border with the United States. Many different indigenous groups flourished in that region before the Conquistadors arrived. What we know about their lives and customs is the result of archeological discoveries and the chronicles of the first Spanish priests and soldiers that had contact with them.

On July 20, 1969, Neil Armstrong made history by becoming the first man to ever walk on the moon! Readers will be engaged from cover to cover as they learn about Armstrong's inspirational career as an astronaut in this biography that features additional information on gravity, NASA, and the moon landing. The vivid images work in conjunction with the supportive text, timeline, glossary, and index to allow for better understanding of the content. This book has been translated into Spanish.

Explore the lifecycle of a butterfly and learn about the transformation of caterpillars into beautiful butterflies. The connection to language arts is the rich vocabulary related to butterflies, caterpillars, and their transformations.