[KenWittlief]

maybe you need to back off some and let the other students stuggle with some tasks, even though you know you could do them faster by yourself

at first it will be a learning curve for them, and they wont get much done, but once they start to feel confident in what they are doing, they will take off on their own, and in the end the whole team will get more done than you will be able to by yourself

sounds like they all expect you to do it by yourself, so they are only poking at the work here and there, expecting you to finish it when they leave.