Maria Nelson 
Por favor y gracias / Saying Please and Thank You [PDF ebook] 

Learning to speak in a polite manner can be tough. Sometimes, people receive gifts they don’t like, don’t want to help out at home, or are just in a hurry. Readers learn that politeness is easy to spread with just a few simple words, such as "please" and "thank you." Taking the time to thank someone lets him or her know they are appreciated. Saying "please" shows a similar respect. Easy-to-read language aids beginning readers navigating both text and good manners for the first time.