[abarboza]

Seems like your students are very active. Here you can find some ideas: Classroom management (discipline)

I don't know what else I can add. Perhaps talking with their main teacher? He/she should know how to discipline them since has more experience working with them.

Make sure you know all the school rules like what to do when a student is complaining or having a stomachache. What if they really have a stomachache? You could get into troubles if you don't know how to deal with that.