MAILING LISTS

As I said in a previous post, I have many questions.  I believe it would 
be best if I only asked a few at a time, so I'll start with these:

1.  How much work is done by the groups outside of class?  One problem I 
would encounter in a high school group is that many students do not have 
the means to drive somewhere.  I'm afraid, though, if I chose my groups 
based on where students live, that I would lose some of the diversity.  
(I live in a very large district in terms of land area.)

2.  How do you keep groups from passing answers to later classes?  I'm 
not thinking about multiple choice answers, because that would be easy 
to solve.  I'm thinking more like a lab result.  Maybe I have a group 
work in the lab to identify a substance, and this might be an experiment 
I cannot change for each class, so the answer would be the same.  (I 
think this would qualify as a team-based activity, since I could have 
simultaneous reporting of the answer, which could lead to a lot of 
disagreement.  Right?)  Anyway, this would be an easy answer to give to 
a friend.
    Maybe I can only do this with experiments that can be slightly 
changed, but that would really complicate my life!

Thanks,

Karen Hoff