Conclude by stating:
1.     Positive  comments.
2.     Pointing out that
-science is collaborative.
-it is important to have good note taking skills.
-it is important to be able to interpret data.
-it is important not to remain fixed in one’s interpretation of data…(be flexible)
 
3.     Their stories may have had to be totally re-written in order to include all data and that is actually a part of doing good science-changing theories to include/account for all known information.
 
Collect and grade the assignment.  Have the student leader/directors return all data in their original envelops, without looking at the remaining bits of data.