My 4yo has expressed interest in learning other languages. What are some resources I should look into?

This morning while eating breakfast, my 4yo son asked if he could play letter games on my phone. The one I had didn't work so I downloaded some new ones. He picked the German ones. I was ecstatic. My partner and I both speak German, so of course I was all for it.Unfortunately the school he goes to is small and only uses English, so learning it there is out of the question.Any help/resources would be gladly welcomed. As I mentioned I already have German letter-learning apps and he even picked out a flash card game, but I don't want him on my phone all the time. Thank you!Edit: a word. via /r/Parenting http://ift.tt/2cu8Bp5