Online classes for two teens
I am looking for a native speaker to give online classes (Tuesdays and Thursdays, from 5.30 to 7pm) to my two teenage sons (10 and 12 years old). 

They are preparing the First Certificate. So they will need to do some "serious" work in writing and reading. But I would also like them to have classes where they can learn and talk about interesting topics in science, history, sports, music, life in other countries...

Starting as soon as you are available! Thanks!