FUN ENGLISH TEACHER FOR MY 2 SONS

we are looking for an English teacher for our kids, someone reliable and fun. They are 11 and 9 years old and fun and nice kids.They have a lot of imagination and love sports too. They understand well English and the older one speaks also quite well. The schedule would be wednesday from 19.30hr to 22.30hr or friday 18.00 - 22.00hr. So they can practice English while me and my wife go to the movies or to theater, etc. We live close to Retiro Park.