...si cada uno de nosotros hiciéramos un poco...

This phrase comes from the Travelogue course lesson 11.4. I don't think this is correct. Am I wrong? I think it should be:
- ...si cada uno de nosotros hiciera un poco...

since the subject is "cada uno".
 

Steven: Isn't this an example of the imperfect subjunctive? 

Or are you questioning why the nosotros vs. the yo form is used?

That's right - I don't think it should be the "nosotros" form in the imperfect subjunctive.