I had a terrible 1st and 2nd grade after school class for the first 2-3 weeks of the semester. Now it's pretty good. Here's a sample of what I did today, hopefully it will help you out a bit as far as what a class can look like/what a routine might be.
BINGO song, because they love it and we just finished with farm animals 5'
Introducing new fruit vocab and the structure "It's a ________" 5-8'
Guess Where? PPT game using the fruit vocab 8-10'
Coloring/writing practice with 2 vocab words 12'
FC game, repeated song, fun game (duck duck goose), etc. 5'
Then I play the clean-up song, rush around making sure all my crayons get back in the boxes and chairs under the desks, and end class. Sometimes I will limit the coloring and play a flashcard game instead, but frankly, they're too rowdy after school and destroy the flashcards, and they'd rather color.
As for speaking to them...work on "Hello" and "How are you?" individually or in tables/groups when they come in, for the first 5'. After that, speak to them the way you would speak to your 3rd graders, but act out what you want them to do. So if I only say "Put the crayons in the box", perhaps 2 kids will get it. If I say this once I've gotten their attention and then act out putting the crayons in the box, they start to learn what I mean, even if the words themselves are so much gibberish.
One last thing which has taken me forever to learn - you need routine! Same song, same order of activities, same seats, same clap/chant for attention...it seems boring as possible but the kids like it and it's what their homeroom teachers do.
Hope this helps a little.